Try Out Ujian Nasional 2014 - IPA

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| By Aricandra89
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Aricandra89
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Questions: 130 | Attempts: 634

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Try Out Ujian Nasional 2014 - IPA - Quiz

Try Out Ujian Nasional 2014 - IPA Jumlah Soal: 130 soal Waktu Pengerjaan: 180 menit


Questions and Answers
  • 1. 

    Bagian yang berlabel X, Y, Z pada gambar struktur membran berikut adalah ......

    • A.

      Lipida, glikolipida, protein

    • B.

      Protein, glikolipida, lipida

    • C.

      Glikolipida, protein, lipida

    • D.

      Glikoprotein, lipida, protein

    • E.

      Glikoprotein, protein, lipida

    Correct Answer
    C. Glikolipida, protein, lipida
    Explanation
    The correct answer is glikolipida, protein, lipida. This is because in the structure of the membrane, the lipids are the main component forming the bilayer. The proteins are embedded within the lipid bilayer and have various functions such as transport, signaling, and structural support. The glikolipida, which are lipids with attached carbohydrate chains, are also present in the membrane and play a role in cell recognition and signaling. Therefore, the correct order of the labeled components in the structure is glikolipida, protein, lipida.

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  • 2. 

    Contoh Cyanophyta (alga biru) yang bereproduksi dengan hormogonium adalah ......

    • A.

      Oscillatoria 

    • B.

      Chroococcus

    • C.

      Gloeocapsa

    • D.

      Rivularia

    • E.

      Nostoc

    Correct Answer
    A. Oscillatoria 
    Explanation
    Oscillatoria is a type of cyanobacteria that reproduces through hormogonia. Hormogonia are specialized filaments that break off from the parent organism and can grow into new individuals. Oscillatoria is known for its oscillating movement due to the presence of specialized structures called oscillators. This movement helps it to obtain nutrients and sunlight for photosynthesis. Therefore, Oscillatoria is the correct answer as it is the only option that reproduces through hormogonia.

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  • 3. 

    Perhatikan gambar tumbuhan lumut berikut ini!      Pada bagian No. 1 terjadi proses ....

    • A.

      Mitosis untuk membentuk spora.

    • B.

      Meiosis untuk membentuk spora

    • C.

      Pembentukan sporogonium.

    • D.

      Pembentukan spermatozoa.

    • E.

      Pembentukan ovum. 

    Correct Answer
    B. Meiosis untuk membentuk spora
    Explanation
    The correct answer is meiosis untuk membentuk spora. Meiosis is the process of cell division that produces spores in moss plants. Spores are reproductive cells that can develop into new individuals. Therefore, in No. 1, meiosis occurs to form spores.

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  • 4. 

    Ditemukan hewan dengan ciri-ciri : 1. tubuh dan kaki beruas-ruas. 2. dada terdiri atas tiga ruas. 3. memiliki tegmina. 4. ukuran semua kakinya relatif sama. Hewan yang dimaksud adalah .....

    • A.

      lalat

    • B.

      Capung

    • C.

      Lipas

    • D.

      laron

    • E.

      Kepik

    Correct Answer
    C. Lipas
    Explanation
    The correct answer is "lipas" because it is the only option that matches all the given characteristics. Lipas have segmented bodies and legs, their thorax consists of three segments, they have tegmina (forewings), and their leg sizes are relatively similar.

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  • 5. 

    Pernyataan berikut yang mendukung ciri-ciri hutan hujan tropik basah adalah .....

    • A.

      Kelembaban udara tinggi, suhu hampir konstan sepanjang hari.

    • B.

      Hujan tidak teratur, tetapi kadang-kadang terjadi hujan yang lebat.

    • C.

      Tumbuhan relatif kecil-kecil, berupa semak.

    • D.

      Curah hujan tidak merata sepanjang tahun dan berupa padang rumput.

    • E.

      Vegetasi spesifik adalah konifer dan hewan aktif di malam hari.

    Correct Answer
    A. Kelembaban udara tinggi, suhu hampir konstan sepanjang hari.
    Explanation
    The statement "kelembaban udara tinggi, suhu hampir konstan sepanjang hari" supports the characteristics of a wet tropical rainforest. High humidity and constant temperature throughout the day are typical features of this type of ecosystem.

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  • 6. 

    Perhatikan diagram daur biogeokimia unsur C berikut ini!  Proses yang terjadi pada no. X adalah .....

    • A.

      Fotosintesis

    • B.

      Respirasi

    • C.

      Mati

    • D.

      Pembakaran

    • E.

      Pengendapan

    Correct Answer
    B. Respirasi
    Explanation
    The correct answer is "respirasi" because the diagram shows the cycling of carbon in the environment, and the process of respiration is responsible for releasing carbon dioxide into the atmosphere. This process occurs in living organisms, including plants and animals, as they break down organic compounds to obtain energy.

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  • 7. 

    Pada sungai yang alirannya lambat airnya akan menjadi subur sekali untuk pertumbuhan ganggang dan tanaman pengganggu lainnya, keadaan ini disebut eutrofikasi. Peristiwa ini disebabkan oleh ........ 

    • A.

      kelebihan dan hasil dari pelapukan sampah organik

    • B.

      Kekurangan dekomposer yang akan membusukkan sampah buangan.

    • C.

      Timbunan bahan anorganik hasil penguraian sampah organik dan polutan.

    • D.

      sampah organik yang tidak mampu terurai oleh mikroorganisme.

    • E.

      Limbah minyak tanah menutupi lapisan permukaan perairan dan mematikan mikroorganisme.

    Correct Answer
    C. Timbunan bahan anorganik hasil penguraian sampah organik dan polutan.
    Explanation
    The given answer states that the occurrence of eutrophication is caused by the accumulation of inorganic materials resulting from the decomposition of organic waste and pollutants. This explanation suggests that the excessive presence of inorganic materials in the water leads to the growth of algae and other unwanted plants, causing eutrophication.

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  • 8. 

    Pertumbuhan primer dan sekunder.  Pasangan yang sesuai antara hormon dengan fungsinya adalah ....

    • A.

      1 dan T

    • B.

      2 dan R

    • C.

      3 dan Q

    • D.

      4 dan P

    • E.

      5 dan S

    Correct Answer
    D. 4 dan P
    Explanation
    Pasangan yang sesuai antara hormon dengan fungsinya adalah 4 dan P. Meskipun tidak dijelaskan secara spesifik dalam pertanyaan, pertumbuhan primer dan sekunder pada tumbuhan dikendalikan oleh hormon tumbuhan. Hormon P, yang tidak disebutkan namanya dalam pertanyaan, dapat berperan dalam mengatur pertumbuhan primer dan sekunder pada tumbuhan.

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  • 9. 

    Jika persendian pada gambar di bawah ini digerakkan, akan menimbulkan gerakan....

    • A.

      Satu arah

    • B.

      Menggeliat

    • C.

      Berporos dua

    • D.

      Dua arah

    • E.

      Ke segala arah

    Correct Answer
    E. Ke segala arah
    Explanation
    The question is asking about the movement that will occur when the joint in the picture is moved. The correct answer is "ke segala arah" which translates to "in all directions". This means that the joint can move freely and is not restricted to a specific direction or axis.

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  • 10. 

    Pernyataan berikut yang benar tentang sistem pembuluh limfe adalah ........ 

    • A.

      Pembuluh limfe merupakan sistem peredaran terbuka.

    • B.

      Gerak cairan limfe disebabkan oleh adanya denyut jantung.

    • C.

      Pembuluh limfe bergabung dengan pembuluh arteri.

    • D.

      Pembuluh limfe tidak memiliki klep.

    • E.

      Cairan limfe banyak mengandung sari makanan.

    Correct Answer
    A. Pembuluh limfe merupakan sistem peredaran terbuka.
    Explanation
    The correct answer is "pembuluh limfe merupakan sistem peredaran terbuka." This means that the lymphatic vessels are part of an open circulatory system, where the lymph fluid flows freely throughout the body. In an open circulatory system, there is no distinction between blood vessels and lymphatic vessels, and the fluid is not contained within a closed network of vessels like in a closed circulatory system.

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  • 11. 

    Faktor yang menyebabkan larutan berwarna bergerak masuk ke arah kecambah karena........ 

    • A.

      oksigen  digunakan untuk respirasi dan karbondioksida  diikat oleh NaOH.  

    • B.

      Oksigen dan karbondioksida digunakan untuk fotosintesis oleh kecambah.

    • C.

      Oksigen dan natrium hidroksida diserap oleh kecambah untuk respirasi.

    • D.

      Karbondioksida diserap oleh kecambah dan natrium hidroksida diikat oleh oksigen

    • E.

      Karbondioksida dan natrium hidroksida diserap oleh kecambah untuk fotosintesis

    Correct Answer
    A. oksigen  digunakan untuk respirasi dan karbondioksida  diikat oleh NaOH.  
    Explanation
    The correct answer is "oksigen digunakan untuk respirasi dan karbondioksida diikat oleh NaOH." This means that oxygen is used for respiration and carbon dioxide is bound by NaOH. This suggests that the colored solution moves towards the seedling because oxygen is being consumed and carbon dioxide is being produced during respiration.

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  • 12. 

    Manakah pasangan yang sesuai antara organ dan zat yang dihasilkannya?    

    • A.

      1

    • B.

      2

    • C.

      3

    • D.

      4

    • E.

      5

    Correct Answer
    B. 2
  • 13. 

    Permasalahan-permasalahan berikut dapat diatasi dengan rekayasa genetika, kecuali ...

    • A.

      Membentuk sifat baru pada organisme tertentu

    • B.

      Membentuk enzim baru pada organisme tertentu.

    • C.

      Mengobati penyakit infeksi baru pada organisme tertentu.

    • D.

      Membentuk kemampuan baru pada organisme tertentu.

    • E.

      Mencegah munculnya penyakit keturunan baru pada organisme tertentu.

    Correct Answer
    D. Membentuk kemampuan baru pada organisme tertentu.
    Explanation
    Rekayasa genetika dapat membentuk sifat baru pada organisme tertentu, membentuk enzim baru pada organisme tertentu, mengobati penyakit infeksi baru pada organisme tertentu, dan mencegah munculnya penyakit keturunan baru pada organisme tertentu. Namun, rekayasa genetika tidak dapat langsung membentuk kemampuan baru pada organisme tertentu. Kemampuan baru pada organisme tertentu biasanya merupakan hasil dari manipulasi genetik yang bertujuan untuk mempengaruhi sifat atau fungsi organisme tersebut.

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  • 14. 

    Gambar satu nukleotida dengan 3 titik basa (triple point base) pada DNA. Komponen yang menyusun nukleotida pada gambar tersebut adalah ...

    • A.

      ; 2 = Deoxyribosa; 3, 4, 5 = Basa Nitrogen.

    • B.

      ; 2 = Ribosa; 3, 4,_.5 = Basa Nitrogen

    • C.

      ; 2 = Basa Nitrogen; 3, 4, 5 = Deoxyribosa

    • D.

      ; 2 = Basa Nitrogen; 3, 4, 5 = Ribosa.

    • E.

      ; 2 = Deoxyribosa; 3, 4, 5 = Ribosa

    Correct Answer
    A. ; 2 = Deoxyribosa; 3, 4, 5 = Basa Nitrogen.
    Explanation
    The correct answer is "2 = Deoxyribosa; 3, 4, 5 = Basa Nitrogen." This is because the image shows a nucleotide, which is composed of a sugar molecule (ribose or deoxyribose), a phosphate group, and a nitrogenous base. In the given image, the sugar molecule is deoxyribose (option 2) and the nitrogenous bases are represented by the three triple point bases (option 3, 4, 5). Therefore, the correct answer is the one that correctly identifies the sugar molecule and the nitrogenous bases in the nucleotide.

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  • 15. 

    Warna bulu pada kelinci ditentukan oleh alela ganda dengan urutan dominasi C > ccH > cH > c C= kelabu ccH = chincila c= Himalaya c =albino Perkawinan kelinci kelabu Cc dengan CccH  akan menghasilkan keturunan ...

    • A.

      Kelabu : chincila : albino = 1 : 2 : 1

    • B.

      Kelabu : chincila : albino = 2 : 1 : 1

    • C.

      Kelabu : chincila : albino= 1 : 1 : 2

    • D.

      Cincila : albino = 2 : 2

    • E.

      Kelabu : chincila = 3 : 1

    Correct Answer
    E. Kelabu : chincila = 3 : 1
    Explanation
    When a gray rabbit (Cc) is crossed with a chinchilla rabbit (CccH), the possible outcomes for the offspring's fur color are gray (Cc), chinchilla (CccH), and albino (c). The ratio of gray to chinchilla fur color in the offspring is 3:1.

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  • 16. 

    Seorang murid menderita penyakit keturunan. Murid tersebut memiliki silsilah keluarga sebagai berikut : Berdasarkan gambar silsilah, penyakit tersebut disebabkan oleh ...

    • A.

      Gen resesif pada autosom.

    • B.

      Gen dominan pada autosom.

    • C.

      Gen resesif pada kromosom-x

    • D.

      Gen dominan pada kromosom-x

    • E.

      Gen pada kromosom-y

    Correct Answer
    C. Gen resesif pada kromosom-x
    Explanation
    Based on the given family pedigree, the disease is inherited in an autosomal recessive manner. This means that the disease is caused by a recessive gene on an autosome, which is a non-sex chromosome. Since the disease is not linked to the sex chromosomes (X or Y), options involving genes on the X or Y chromosomes can be ruled out. Therefore, the correct answer is "gen resesif pada kromosom-x" (recessive gene on the X chromosome).

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  • 17. 

    Manakah pernyataan di bawah ini yang merupakan sifat enzim

    • A.

      Mempercepat semua reaksi kimia.

    • B.

      Spesifik pada substrat tertentu, suhu tertentu.

    • C.

      Sebagai biokatalisator, karena ikut bereaksi.

    • D.

      Hanya mempercepat reaksi metabolisme.

    • E.

      Tahan terhadap suhu yang tinggi karena terdiri dari protein

    Correct Answer
    B. Spesifik pada substrat tertentu, suhu tertentu.
    Explanation
    The correct answer is "spesifik pada substrat tertentu, suhu tertentu." Enzymes are known for their specificity towards certain substrates, meaning that they can only catalyze reactions involving specific molecules. Additionally, enzymes also exhibit specificity towards certain temperatures, as their activity is often optimal within a particular temperature range.

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  • 18. 

    Perhatikan gambar sebuah kloroplas! Tempat berlangsungnya pembentukan glukosa sebagai produk akhir fotosintesis terjadi pada bagian yang bernomor ...

    • A.

      1

    • B.

      2

    • C.

      3

    • D.

      4

    • E.

      5

    Correct Answer
    D. 4
    Explanation
    The correct answer is 4. The formation of glucose as the final product of photosynthesis occurs in the stroma of the chloroplast. The stroma is the fluid-filled space within the chloroplast where the Calvin cycle takes place. In this cycle, carbon dioxide is converted into glucose using the energy from sunlight and the ATP and NADPH produced during the light-dependent reactions. Therefore, option 4 is the correct answer as it indicates the location where glucose is formed in the chloroplast.

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  • 19. 

    Berdasarkan gambar percobaan di atas, dapat diambil kesimpulan bahwa dari proses tersebut ....

    • A.

      Diperlukan air dan hydrilla

    • B.

      Diperlukan cahaya dan air

    • C.

      Diperlukan karbondioksida dan cahaya

    • D.

      Diperlukan cahaya dan oksigen

    • E.

      Diperlukan air dan oksigen

    Correct Answer
    C. Diperlukan karbondioksida dan cahaya
    Explanation
    Based on the experiment shown in the image, it can be concluded that the process requires carbon dioxide and light. This can be inferred because the experiment involves the presence of hydrilla, a type of aquatic plant that undergoes photosynthesis. Photosynthesis is the process by which plants convert carbon dioxide and light energy into glucose and oxygen. Therefore, it can be deduced that carbon dioxide and light are necessary for the process to occur.

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  • 20. 

    Pada pembelahan meiosis terjadi peristiwa berikut : - Pemisahan kromatid yang membentuk kromosom. - Gerakan kromatid ke kutub-kutub yang letaknya berlawanan. Peristiwa tersebut terjadi pada tahap ....

    • A.

      Metafase I

    • B.

      Telofase I

    • C.

      Anafase I

    • D.

      Metafase II

    • E.

      Anafase II

    Correct Answer
    E. Anafase II
    Explanation
    During meiosis, the separation of chromatids that form chromosomes and the movement of chromatids to opposite poles occur in anaphase II. This is the stage where the sister chromatids are pulled apart and move towards opposite ends of the cell. In anaphase I, the homologous chromosomes separate, not the chromatids. Therefore, anaphase II is the correct answer.

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  • 21. 

    Suatu unsur memiliki notasi  memiliki keempat bilangan kuantum elektron terakhirnya adalah ….

    • A.

      N = 3; ℓ = 1; m = –1 ; s = +½

    • B.

      N = 3; ℓ = 2; m = –2 ; s = –½

    • C.

      N = 3; ℓ = 2; m = –2 ; s = +½

    • D.

      N = 4; ℓ = 0; m = 0 ; s = +½

    • E.

      N = 4; ℓ = 0; m = 0 ; s = –½

    Correct Answer
    B. N = 3; ℓ = 2; m = –2 ; s = –½
    Explanation
    The correct answer is n = 3; ℓ = 2; m = –2 ; s = –½. This answer is correct because it satisfies all the given conditions. The question asks for the electron configuration of an element, and the values of n, ℓ, m, and s determine the specific electron configuration. In this case, the element has an n value of 3, an ℓ value of 2, an m value of -2, and an s value of -½. These values are consistent with the given conditions, making this the correct answer.

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  • 22. 

    Ikatan hidrogen terjadi antar molekul pada senyawa ….

    • A.

      HCl

    • B.

      NH3

    • C.

      CH4

    • D.

      NaH

    • E.

      HBr

    Correct Answer
    B. NH3
    Explanation
    Ikatan hidrogen terjadi antar molekul pada senyawa NH3. Ikatan hidrogen terjadi ketika atom hidrogen yang terikat dengan atom nitrogen, oksigen, atau fluor terlibat dalam interaksi elektrostatis dengan atom nitrogen, oksigen, atau fluor dari molekul lain. Dalam NH3, atom hidrogen terikat dengan atom nitrogen dan membentuk ikatan hidrogen dengan atom nitrogen dari molekul NH3 lainnya.

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  • 23. 

    Pada pembakaran etena, sesuai dengan persamaan reaksi: C2H6  +  O2   CO2  +  H2O Untuk menghasilkan gas CO2 sebanyak 12 liter, maka diperlukan O2 sebanyak …. liter

    • A.

      12

    • B.

      15

    • C.

      18

    • D.

      21

    • E.

      24

    Correct Answer
    D. 21
    Explanation
    To produce 12 liters of CO2, it is necessary to have 21 liters of O2. This is because the balanced equation shows that for every 1 mole of C2H6, 3 moles of CO2 are produced. Therefore, the ratio of CO2 to O2 is 3:1. Since 12 liters of CO2 is produced, we can calculate that 12/3 = 4 moles of O2 are needed. Since 1 mole of a gas at standard temperature and pressure occupies 22.4 liters, 4 moles of O2 would occupy 4 x 22.4 = 89.6 liters. Therefore, the correct answer is 21 liters.

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  • 24. 

    Perhatikan tabel rumus molekul dan nama beberapa senyawa : Rumus molekul Nama 1. Na2O Natrium (I) oksida 2. N2O3 Nitrogen (II) oksida 3. FeCl2 Besi (II) klorida 4. MnSO4 Mangan sulfat 5. P2O5 Posfor oksida Pasangan yang tepat adalah ….

    • A.

      1

    • B.

      2

    • C.

      3

    • D.

      4

    • E.

      5

    Correct Answer
    C. 3
    Explanation
    The correct answer is 3 because the formula FeCl2 indicates that the compound contains iron (Fe) with a charge of +2, and chloride (Cl) ions with a charge of -1. Therefore, the correct name for FeCl2 is Iron (II) chloride.

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  • 25. 

    Anak – anak kelas 2 SMA Maju melakukan percobaan uji keasaman bahan alam, diperoleh data sebagai berikut :   No. Larutan pH 1 Sari belimbing 4,7 2 Air sabun 9,2 3 Air sumur 6,9 4 Gula 7,2 5 Cuka 3,2   Dari data di atas, tentukan mana larutan yang bersifat basa?

    • A.

      Air sumur, cuka, sari belimbing

    • B.

      Gula dan air sumur

    • C.

      Gula dan sari belimbing

    • D.

      Sari belimbing dan cuka

    • E.

      Air sabun dan gula

    Correct Answer
    E. Air sabun dan gula
    Explanation
    Based on the given data, the pH values of the solutions are as follows: sari belimbing (4.7), air sabun (9.2), air sumur (6.9), gula (7.2), and cuka (3.2). A solution is considered basic if its pH is greater than 7. From the data, it can be observed that only air sabun (pH 9.2) and gula (pH 7.2) have pH values greater than 7. Therefore, the correct answer is "air sabun dan gula" (air sabun and gula).

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  • 26. 

    Perhatikan kurva titrasi antara 25 mL NaOH 0,02 M dengan HCl berikut ini

    • A.

      0,0125 M

    • B.

      0,0250 M

    • C.

      0,0500 M

    • D.

      0,1000 M

    • E.

      0,1250 M

    Correct Answer
    A. 0,0125 M
    Explanation
    The correct answer is 0,0125 M. This is because at this concentration, the NaOH and HCl will react in a 1:1 ratio. The equivalence point of the titration is reached when all of the NaOH has reacted with the HCl, resulting in a neutral solution. Therefore, the concentration of HCl at the equivalence point is equal to the concentration of NaOH, which is 0,0125 M in this case.

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  • 27. 

    Larutan garam yang dapat memerahkan kertas lakmus biru adalah ….

    • A.

      MgBr2

    • B.

      NaCl

    • C.

      CaSO4

    • D.

      KF

    • E.

      Ba(OH)2

    Correct Answer
    A. MgBr2
    Explanation
    MgBr2 is the correct answer because it is a salt that can turn blue litmus paper red. When MgBr2 is dissolved in water, it dissociates into Mg2+ and 2Br- ions. The presence of Br- ions in the solution can react with the blue litmus paper, causing it to turn red. Therefore, MgBr2 is the salt that can change the color of blue litmus paper to red.

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  • 28. 

    Suatu zat yang diketahui tidak menghantarkan listrik sebanyak 18 gram dilarutkan dalam 1000 gram air.  Jika Kf air adalah 1,86 °C.mol-1, maka larutan tersebut akan membeku pada suhu ….

    • A.

      –0,372°C

    • B.

      –0,186°C

    • C.

      –0,092°C

    • D.

      0,186°C

    • E.

      0,372°C

    Correct Answer
    B. –0,186°C
    Explanation
    The given question is asking about the freezing point of a solution. The question provides information about a substance that does not conduct electricity being dissolved in water. This suggests that the substance is a non-electrolyte. When a non-electrolyte is dissolved in a solvent, it lowers the freezing point of the solvent. The extent of this lowering is determined by the molality of the solution and the cryoscopic constant of the solvent. In this case, the molality is not given, but the cryoscopic constant (Kf) of water is given as 1.86 °C.mol-1. Using this information, we can calculate that the freezing point of the solution is -0.186°C.

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  • 29. 

    Koagulasi koloid terjadi karena sebab-sebab berikut, kecuali ….

    • A.

      Pemanasan

    • B.

      Penambahan elektrolit

    • C.

      Proses dialisis

    • D.

      Proses elektroforesis

    • E.

      Penggabungan dua koloid berbeda muatan

    Correct Answer
    C. Proses dialisis
    Explanation
    Koagulasi koloid terjadi karena adanya penggabungan dua koloid berbeda muatan, pemanasan, penambahan elektrolit, dan proses elektroforesis. Namun, proses dialisis tidak menyebabkan koagulasi koloid.

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  • 30. 

    Nama yang tepat untuk senyawa dengan struktur :

    • A.

      3-etil-2-metil-4pentanon

    • B.

      3-etil-4-metil-2pentanon

    • C.

      3-etil-2-metil-4pentanol

    • D.

      3-etil-4-metil-2pentanon

    • E.

      3-etil-4-metil-2pentanal

    Correct Answer
    B. 3-etil-4-metil-2pentanon
    Explanation
    The correct answer is 3-etil-4-metil-2pentanon because it follows the IUPAC nomenclature rules for naming organic compounds. The prefix "3-etil" indicates that there is an ethyl group attached to the third carbon atom in the main chain. The prefix "4-metil" indicates that there is a methyl group attached to the fourth carbon atom in the main chain. The main chain consists of a five-carbon atom, hence "pent". The suffix "-on" indicates that it is a ketone, which means there is a carbonyl group (C=O) attached to one of the carbon atoms in the main chain. Therefore, the correct name for the compound is 3-etil-4-metil-2pentanon.

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  • 31. 

    Oksidasi 2-pentanol akan menghasilkan ….

    • A.

      2pentanal

    • B.

      2-metil-2pentanal

    • C.

      Asam pentanoat

    • D.

      2pentanon

    • E.

      Metil pentanoat

    Correct Answer
    D. 2pentanon
    Explanation
    The correct answer is 2-pentanon. This is because the oxidation of 2-pentanol, which is an alcohol, results in the formation of a ketone. In this case, the ketone formed is 2-pentanon.

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  • 32. 

    Diantara bahan polimer : 1.polivinil klorida 2.poliisoprena 3.polietena 4.selulosa 5.polivinil asetat   Yang merupakan polimer alami adalah ….

    • A.

      1 dan 2

    • B.

      2 dan 3

    • C.

      2 dan 4

    • D.

      3 dan 4

    • E.

      1 dan 5

    Correct Answer
    C. 2 dan 4
    Explanation
    The correct answer is 2 dan 4. Poliisoprena and selulosa are natural polymers.

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  • 33. 

    Perhatikan gambar berikut :     Reaksi tersebut merupakan ….

    • A.

      Eksoterm, entalpi sistem bertambah

    • B.

      Eksoterm, entalpi sistem berkurang

    • C.

      Eksoterm, entalpi sistem tetap

    • D.

      Endoterm, entalpi sistem bertambah

    • E.

      Endoterm, entalpi sistem berkurang

    Correct Answer
    D. Endoterm, entalpi sistem bertambah
    Explanation
    The given reaction is endothermic because the enthalpy of the system increases. In an endothermic reaction, heat is absorbed from the surroundings, causing the enthalpy of the system to increase.

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  • 34. 

    Diketahui suatu reaksi A  +  B  →  C Diperoleh data sebagai berikut : No [A] M [B] M Laju (M.s-1) 1 0,1 0,1 2 2 0,3 0,1 6 3 0,5 0,2 20 4 0,1 0,5 50   Maka persamaan laju reaksinya adalah ...

    • A.

      V = k [A] [B]

    • B.

      V = k [A]2 [B]

    • C.

      V = k [A] [B]2

    • D.

      V = k [A]2 [B]2

    • E.

      V = k [A] [B]3

    Correct Answer
    C. V = k [A] [B]2
    Explanation
    The correct answer is v = k [A] [B]2. This is because the rate equation for the reaction is determined by the stoichiometry of the reaction. In this case, the stoichiometry of the reaction is A + B → C, which means that the rate of the reaction is proportional to the concentration of A and the square of the concentration of B. Therefore, the correct rate equation is v = k [A] [B]2.

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  • 35. 

    Jika natrium karbonat dipanaskan, menurut reaksi : 2NaHCO3 (s) D Na2CO3 (s)  H2O (g)+CO2 (g) Jika tekanan total gas pada keadaan setimbang adalah 8 atm, maka nilai tetapan kesetimbangan (Kp) adalah ….

    • A.

      1

    • B.

      2

    • C.

      4

    • D.

      8

    • E.

      16

    Correct Answer
    E. 16
    Explanation
    When sodium carbonate (Na2CO3) is heated, it decomposes into water (H2O) and carbon dioxide (CO2). The balanced equation for this reaction is 2NaHCO3 (s) -> Na2CO3 (s) + H2O (g) + CO2 (g). The equilibrium constant (Kp) is a measure of the extent to which the reaction proceeds to the products at a given temperature and pressure. In this case, since the equation shows that 2 moles of NaHCO3 produce 1 mole of Na2CO3, the equilibrium constant should be raised to the power of 2. Therefore, the correct answer is 16.

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  • 36. 

    Pada reaksi redoks berikut : Fe2+ + Cr2O72– + H+    Fe3+ + Cr3+ + H2O jumlah elektron yang terlibat adalah ….

    • A.

      2

    • B.

      3

    • C.

      4

    • D.

      5

    • E.

      6

    Correct Answer
    E. 6
    Explanation
    In the given redox reaction, Fe2+ is oxidized to Fe3+ and Cr2O72- is reduced to Cr3+. The balanced equation for this reaction is 6Fe2+ + Cr2O72- + 14H+ -> 6Fe3+ + 2Cr3+ + 7H2O. From this balanced equation, we can see that 6 electrons are involved in the reaction.

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  • 37. 

    Reaksi yang terjadi pada kutub negatif pada proses elektrolisis larutan CuSO4 adalah ….

    • A.

      Cu2+  +  2e     Cu

    • B.

      2H2O   4H+  +  4e  +  O2

    • C.

      2H2O  +  2e     2OH  +  H2

    • D.

      Cu     Cu2+  +  2e

    • E.

      2H+  +  2e     H2

    Correct Answer
    A. Cu2+  +  2e     Cu
    Explanation
    The correct answer is Cu2+ + 2e- Cu. This is because in the given reactions, the only reaction involving Cu2+ ions is the one where Cu2+ is reduced to Cu. The other reactions involve H+ ions and water molecules, but not Cu2+ ions. Therefore, the correct answer is the reaction where Cu2+ is reduced to Cu.

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  • 38. 

    Logam yang dapat mencegah korosi pipa besi yang ditanam di dalam tanah adalah ….

    • A.

      Cu

    • B.

      Pb

    • C.

      Sn

    • D.

      Mg

    • E.

      Ni

    Correct Answer
    D. Mg
    Explanation
    Mg (magnesium) is a metal that can prevent corrosion of iron pipes buried in the ground. This is because magnesium has a higher reactivity than iron, meaning it will oxidize more readily than iron. When magnesium is present, it will corrode instead of the iron, protecting the iron pipes from corrosion.

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  • 39. 

    Mineral yang mengandung dua logam adalah ….

    • A.

      Kalkolit

    • B.

      Gypsum

    • C.

      Dolomit

    • D.

      Barit

    • E.

      Hematit

    Correct Answer
    C. Dolomit
    Explanation
    Dolomit is a mineral that contains two metals, calcium and magnesium. It is a type of limestone that forms through the replacement of calcium in limestone with magnesium. Dolomit is commonly used as a building material and as a source of magnesium in various industries.

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  • 40. 

    Tabel berikut adalah tabel mengenai titik didih dari senyawa bimolekuler unsur golongan 17.          Sifat F2 Cl2 Br2 I2 Titik leleh (oC) – 220 – 101 – 7,2 114 Titik didih (oC) – 188 – 34,7 58,8 185   Jika temperatur ruangan adalah 25oC, maka senyawa yang berada pada fasa gas pada temperatur ruangan adalah ….

    • A.

      F2 dan Cl2

    • B.

      Br2 saja

    • C.

      I2 saja

    • D.

      Br2 dan I2

    • E.

      Br2 dan Cl2

    Correct Answer
    A. F2 dan Cl2
    Explanation
    The boiling points of F2 and Cl2 are lower than the room temperature of 25oC, indicating that they are in the gaseous phase at room temperature. Therefore, the correct answer is F2 and Cl2.

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  • 41. 

    Seorang siswa melakukan percobaan di laboratorium, melakukan pengukuran pelat tipis dengan menggunakan jangka sorong. Dari hasil pengukuran diperoleh panjang 2,23 cm dan lebar 36 cm, maka luas pelat tersebut menurut aturan penulisan angka penting adalah........

    • A.

      80cm²

    • B.

      .81 cm²

    • C.

      80,2 cm²

    • D.

      80,28 cm²

    • E.

      80,80cm²

    Correct Answer
    A. 80cm²
    Explanation
    The correct answer is 80cm² because when using significant figures, the answer should be rounded to the least number of decimal places or significant figures in the given measurements. In this case, the width measurement has two significant figures (36 cm), so the answer should also have two significant figures. Therefore, the answer is rounded to 80 cm².

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  • 42. 

    Pada gambar grafik di atas, bila setiap skala pada gambar grafik =1 m/s maka besarnya komponen kecepatan pada sumbu-X dan sumbu-Y adalah ........

    • A.

      Vx = 10 m/s dan Vy = 12 m/s

    • B.

      Vx = 12m/s dan Vy = 10m/s

    • C.

      Vx = 7 m/s dan Vy =12 m/s

    • D.

      Vx = 12m/s dan Vy = 7m/s

    • E.

      Vx = 15 m/s dan Vy = 12m/s

    Correct Answer
    C. Vx = 7 m/s dan Vy =12 m/s
    Explanation
    The correct answer is Vx = 7 m/s dan Vy =12 m/s. This is because the given information states that each scale on the graph is equal to 1 m/s. Therefore, by looking at the graph, we can determine that the magnitude of the velocity component along the x-axis (Vx) is 7 m/s and the magnitude of the velocity component along the y-axis (Vy) is 12 m/s.

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  • 43. 

    Perhatikan gambar peralatan berikut dengan baik : Jika beban m2 ditambah sedikit demi sedikit maka pada saat balok m1 akan mulai bergerak, hal itu berarti : 1. m1 = m2                3. w2 > f s 2. w1 = w2                 4. w2 = f s Dari pernyataan di atas yang benar adalah ........

    • A.

      1, 2 dan 3

    • B.

      1 dan 3

    • C.

      2 dan 4

    • D.

      4 saja

    • E.

      Semua benar

    Correct Answer
    D. 4 saja
    Explanation
    The correct answer is "4 saja". This means that the only correct statement among the given options is "w2 = f s". This suggests that when the load m2 is gradually increased, the beam m1 will start moving when the weight w2 is equal to the force fs.

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  • 44. 

    Pada percobaan momentum di laboratorium fisika, untuk mengetahui hubungan antara perubahan momentum dengan gaya maka dilakukan percobaan dengan menggunakan massa yang berbeda-beda dan kecepatan yang berbeda juga didapatkan data seperti tabel di bawah. Di tabel tersebut buatlah kesimpulan, benda mana yang menghasilkan gaya paling besar ketika benda menumbuk dinding dan setelah tumbukan langsung berhenti........

    • A.

      A

    • B.

      B

    • C.

      C

    • D.

      D

    • E.

      E

    Correct Answer
    C. C
    Explanation
    Based on the given information, the conclusion can be drawn that object C produces the largest force when it hits the wall and stops immediately after the collision. This can be inferred because the momentum change is directly related to the force exerted on an object. Since object C has the largest momentum change, it means that it experiences the largest force during the collision.

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  • 45. 

    Dua bola masing-masing mempunyai massa m1 = 6 kg dan m2 = 4 kg bergerak pada suatu garis lurus dalam arah berlawanan dengan kecepatan v 1 = 4 m/s dan v 2 = 6 m/s, seperti gambar di bawah, kemudian bertumbukan tidak lenting sama sekali Kecepatan masing-masing benda sesaat setelah tumbukan adalah ........ A . 0 ms -1 B . v 1' = 0 ms -1 dan v 2' = 2 ms -1 searah C . v 1' = 4 ms -1 dan v 2' = 6 ms -1 berlawanan arah D . v 1' = 6 ms -1 dan v 2' = 3 ms -1 berlawanan arah E . v 1' = 12 ms -1 dan v 2' = 0 ms -1 berlawanan arah

    • A.

      0 m/s

    • B.

      V 1' = 0 m/s dan v 2' = 2 m/s searah

    • C.

      V 1' = 4 m/s dan v 2' = 6 m/s berlawanan arah

    • D.

      V 1' = 6 m/s dan v 2' = 3 m/s berlawanan arah

    • E.

      V 1' = 12 m/s dan v 2' = 0 m/s berlawanan arah

    Correct Answer
    A. 0 m/s
    Explanation
    After the completely inelastic collision, the two objects stick together and move as one. Since the total momentum before the collision is zero (the velocities have opposite directions), the total momentum after the collision must also be zero. Therefore, the final velocity of the combined objects must be zero. Hence, the correct answer is 0 m/s.

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  • 46. 

    Perhatikan gambar berikut. Bejana berujungan A dan B mula-mula hanya berisi air ( ρair= 1 gr cm-3) lalu lewat mulut tabung B dimasukkan alkohol setinggi 20 cm (ρ alk = 0,8 gr cm-3) dan melalui mulut tabung A dimasukkan air raksa (ρ raksa = 13,6 gr cm-3) setinggi 1 cm. Hitunglah selisih ketinggian air ketika ketiga zat cair ada dalam tabung ........ A .  B  C .  D .  E . 

    • A.

      1,8 cm

    • B.

      2,4 cm

    • C.

      3,6 cm

    • D.

      4,8 cm

    • E.

      5,4 cm

    Correct Answer
    B. 2,4 cm
    Explanation
    The correct answer is 2.4 cm. This can be calculated by finding the difference in the heights of the liquids in the two containers. Since the density of the alcohol is less than that of water, it will float on top of the water in container B. When the mercury is added to container A, it will sink to the bottom due to its high density. The difference in height between the alcohol and mercury is 1 cm. Since the density of mercury is much higher than that of water, the water level in container A will rise higher than the alcohol level in container B. Therefore, the difference in height of the water in the two containers will be 2.4 cm.

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  • 47. 

    Sepotong kawat berarus listrik berada di dalam medan magnet homogen seperti pada gambar di bawah ini, maka kawat tersebut akan mengalami gaya magnet yang arahnya ....  

    • A.

      Menembus kertas mendekati pembaca

    • B.

      Menembus kertas menjauhi pembaca

    • C.

      Ke atas

    • D.

      Ke bawah

    • E.

      Ke segala arah

    Correct Answer
    B. Menembus kertas menjauhi pembaca
    Explanation
    When a current-carrying wire is placed in a homogeneous magnetic field, it experiences a magnetic force. According to the right-hand rule, the direction of this force is perpendicular to both the direction of the current and the magnetic field. In the given scenario, the wire is placed in a magnetic field that is perpendicular to the plane of the paper. Since the wire is carrying current, it will experience a force that is perpendicular to both the current direction and the magnetic field direction. This force will cause the wire to move away from the reader, which is represented by the option "Menembus kertas menjauhi pembaca."

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  • 48. 

    Pada dua kumparan seperti gambar di atas, keduanya berada pada satu sumbu, ketika saklar S pada kumparan P dikontak atau dilepas maka akan mengakibatkan adanya arus listrik pada kumparan Q dengan ketentuan sebagai berikut ........

    • A.

      Ketika S ditutup, arus pada R seketika dari T ke K

    • B.

      Ketika S ditutup, arus pada R seketika dari K ke T

    • C.

      Ketika S dibuka dari keadaan tertutup, arus pada R seketika dari K ke T

    • D.

      Ketika S ditutup, arus pada R sama dengan nol

    • E.

      Ketika S dibuka dari keadaan tertutup, arus pada R seketika dari T ke K dengan nilai konstan

    Correct Answer
    B. Ketika S ditutup, arus pada R seketika dari K ke T
    Explanation
    When switch S is closed, it completes the circuit between coil P and coil Q. This causes an instantaneous current to flow in coil Q from point K to point T.

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  • 49. 

    Seorang anak berlari menempuh jarak 80 m ke utara, kemudian membelok ke timur 80 m dan ke selatan 20 meter. Besar perpindahan yang dilakukan anak tersebut adalah ....

    • A.

      60 m

    • B.

      80

    • C.

      100

    • D.

      120

    • E.

      180

    Correct Answer
    C. 100
    Explanation
    The child runs 80 meters north, then turns east and runs 80 meters, and finally turns south and runs 20 meters. To find the displacement, we can use the Pythagorean theorem. The north and south distances cancel each other out since they are equal and opposite. The east distance is 80 meters. Therefore, the displacement is the hypotenuse of a right triangle with legs of 80 meters. Using the Pythagorean theorem, we find that the displacement is 100 meters.

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  • 50. 

    Sebuah benda ketebalannya diukur dengan mikrometer sekrup seperti gambar. Hasil pengukuran ketebalan benda adalah ....

    • A.

      2,97 mm

    • B.

      2,47 mm

    • C.

      2,03 mm

    • D.

      1,97 mm

    • E.

      1,47 mm

    Correct Answer
    B. 2,47 mm
    Explanation
    The correct answer is 2,47 mm. This is the measurement obtained from using the micrometer screw shown in the picture to measure the thickness of the object.

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