Pytje Nga Lenda E Kimis

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| By Ipod-8gb
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Ipod-8gb
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Quizzes Created: 7 | Total Attempts: 191,255
| Attempts: 20,430
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  • 1/20 Pyetjet

    Kush e rregulloi sistemin periodik?

    • Berceliusi
    • Watti
    • Volta
    • Markvolta
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  • 2. 

    Kush është pjestari themelor i alkaneve?

    • Metani

    • Etani

    • Meteni

    • Metini

    Correct Answer
    A. Metani
    Explanation
    Metani është pjestari themelor i alkaneve sepse është molekulë e parë dhe më e thjeshtë e serisë së alkaneve. Alkanet janë hidrokarbure të thjeshta që përbëhen vetëm nga atome të karbonit dhe hidrogjenit. Metani ka formula kimike CH4 dhe është molekulë e parë e serisë së alkaneve, ku karboni ka vetëm një atom hidrogjeni të lidhur me veten.

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  • 3. 

    Yndyrnat jane estere te glicerolit me :

    • Estere

    • Baza

    • Kripera

    • Acide te larta yndyrore

    Correct Answer
    A. Acide te larta yndyrore
    Explanation
    The correct answer is "Acide te larta yndyrore" because esters are formed by the reaction between an acid and an alcohol. In this case, glycerol is an alcohol and high fatty acids are the acids involved in the formation of esters. Therefore, the correct answer is "Acide te larta yndyrore" which translates to "High fatty acids" in English.

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  • 4. 

    Qka do të thot "hem"?

    • Kimi

    • Elemente

    • Egjipt

    • Tokë e zezë

    Correct Answer
    A. Tokë e zezë
    Explanation
    The correct answer "Tokë e zezë" translates to "black land" in English. This term is commonly used to refer to the fertile black soil found along the Nile River in Egypt.

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  • 5. 

     Si quhen ndryshe alkanet ?

    • Olefina

    • Parafina

    • Vitamina

    • Proteina

    Correct Answer
    A. Parafina
    Explanation
    The correct answer is "Parafina" because alkanet is a plant that is commonly known as "Parafina" in Albanian.

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  • 6. 

    Qka është eteni?

    • Alkan

    • Alkin

    • Alken

    • Alkool

    Correct Answer
    A. Alken
    Explanation
    The correct answer is "Alken." Alken is a type of hydrocarbon that contains a carbon-carbon double bond. It is characterized by the general formula CnH2n, where n represents the number of carbon atoms in the molecule. Alkenes are unsaturated hydrocarbons and are commonly used in the production of plastics, solvents, and other chemical compounds.

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  • 7. 

    Sa lidhje Mund ti kete karboni ?

    • 1 Lidhje

    • 2 Lidhje

    • 3 Lidhje

    • 4 Lidhje

    Correct Answer
    A. 4 Lidhje
    Explanation
    The correct answer is 4 Lidhje. In chemistry, carbon can form up to four covalent bonds with other atoms. This is because carbon has four valence electrons, allowing it to share electrons and form multiple bonds. Therefore, it is possible for carbon to have four bonds, which is represented by the answer choice "4 Lidhje".

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  • 8. 

    Which one do you like?

    • Option 1

    • Option 2

    • Option 3

    • Option 4

    Correct Answer
    A. Option 1
    Explanation
    The question asks for the preferred option among the given choices. The correct answer is Option 1, but without any additional context or information, it is impossible to provide a specific explanation for why Option 1 is the preferred choice.

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  • 9. 

    Cila nga këto komponime të shenuara eshte formula e butanit ?

    • CH3CH2CH3

    • CH3CH2CH=CH2

    • CH3CH2CH2CH3

    • CH3CH2CH2-OH

    Correct Answer
    A. CH3CH2CH2CH3
    Explanation
    The correct answer is CH3CH2CH2CH3. This is the formula for butane, a hydrocarbon with four carbon atoms in a straight chain. It is the only option that matches the formula for butane.

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  • 10. 

    Glukoza dhe Fruktoza jane :

    • Polisakaride

    • Oligosakaride

    • Disakaride

    • Monosakaride

    Correct Answer
    A. Monosakaride
    Explanation
    Glukoza dhe Fruktoza janë monosakaride. Monosakaridet janë karbohidratet më të thjeshta, të cilat nuk mund të ndahen në molekula më të vogla. Të dyja glukoza dhe fruktoza janë monosakaride të ndryshme, të cilat gjenden natyrisht në ushqime të ndryshme. Glukoza është forma e zakonshme e sheqerit dhe është burimi kryesor i energjisë për organizmin. Fruktoza gjendet kryesisht në fruta dhe është një lloj sheqeri natyral. Kjo përgjigje është e saktë sepse glukoza dhe fruktoza janë monosakaride, jo polisakaride, oligosakaride ose disakaride.

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  • 11. 

    Cila nga këto është formula e alkineve?

    • CnH2n+2

    • CnH2n

    • CnH2n-2

    • Asnje

    Correct Answer
    A. CnH2n-2
    Explanation
    The correct answer is CnH2n-2. This formula represents the general formula for alkynes, which are hydrocarbons with triple bonds between carbon atoms. The formula CnH2n-2 indicates that for every carbon atom in the molecule, there are two hydrogen atoms less than twice the number of carbon atoms. This formula accurately represents the composition of alkynes and distinguishes them from alkanes (CnH2n+2) and alkenes (CnH2n).

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  • 12. 

    Cili komponim perfitohet me oksidimin e etanalit ?

    • Acidi metanoik

    • Metanoli

    • Etanoli

    • Acidi etanoik

    Correct Answer
    A. Acidi etanoik
    Explanation
    The correct answer is Acidi etanoik. This is because etanal (also known as acetaldehyde) can be oxidized to form etanoik acid (also known as acetic acid). Acidi etanoik is a carboxylic acid that is commonly formed when aldehydes are oxidized.

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  • 13. 

    Aroma e pakendshme si e amoniakut te komponimet organike eshte si pasoje e pranise të :

    • Acideve

    • Bazave

    • Aminave

    • Estereve

    Correct Answer
    A. Aminave
    Explanation
    The correct answer is Aminave. Aroma e pakëndshme e një substancë mund të jetë si rezultat i pranisë së aminave. Aminat janë një lloj komponimesh organike që përmbajnë një grup amino (-NH2). Këta amina mund të prodhojnë një aromë e cila mund të jetë e pakëndshme në disa raste, siç ndodh me amoniakun.

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  • 14. 

    Cila prej formave strukturore te cikloheksanit eshte me stabile ?

    • Froma e karriges

    • Forma e bankes

    • Forma planore

    • Forma gjysmeplanore

    Correct Answer
    A. Froma e karriges
    Explanation
    The correct answer is "Froma e karriges" because it refers to the chair conformation, which is the most stable form of cyclohexane. In the chair conformation, all carbons are in a staggered arrangement, minimizing steric hindrance and strain. This conformation also allows for the most favorable overlap of orbitals, resulting in lower energy and greater stability. The other options, such as the boat conformation or planar forms, introduce more strain and are therefore less stable.

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  • 15. 

    Sa atome Hidrogjen ka Okteni?

    • 18

    • 20

    • 16

    • 8

    Correct Answer
    A. 16
    Explanation
    The atomic number of hydrogen is 1, which means it has one proton in its nucleus. The atomic number determines the number of protons in an atom. However, the question is asking about the number of electrons in a hydrogen atom, which is equal to the number of protons in a neutral atom. Since hydrogen has one proton, it also has one electron. Therefore, the correct answer is 1, not 16.

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  • 16. 

    Cili ëste grupi metilinik?

    • CH4

    • -CH2

    • -CH3

    • -CH

    Correct Answer
    A. CH4
    Explanation
    The correct answer is CH4 because it is the only option that represents a molecule with a single carbon atom bonded to four hydrogen atoms. The other options have fewer hydrogen atoms or additional carbon atoms, making them different compounds.

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  • 17. 

    Sa gram klorur alumini perfitohen nga 10.8gr Al. 2Al+3Cl2-->2AlCl3

    • 52.2

    • 53.3

    • 54.4

    • 55.5

    Correct Answer
    A. 53.3
    Explanation
    The molar mass of AlCl3 is 133.34 g/mol. According to the balanced chemical equation, 2 moles of Al react with 3 moles of Cl2 to produce 2 moles of AlCl3. Therefore, the molar mass of 2 moles of AlCl3 is 2 * 133.34 = 266.68 g/mol. Since 10.8 g of Al is reacted, we can use the molar mass ratio to calculate the mass of AlCl3 produced. (10.8 g Al) * (266.68 g/mol AlCl3 / 2 * 26.98 g/mol Al) = 53.34 g AlCl3. Rounded to the nearest tenth, the mass of AlCl3 produced is 53.3 g.

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  • 18. 

    Te llogaritet masa e nje molekule te oksigjenit

    • 5.32x1023

    • 5.31x1023

    • 5.21x1023

    • 5.22x1023

    Correct Answer
    A. 5.31x1023
    Explanation
    The correct answer is 5.31x10^23. This is because the question asks for the measure of a molecule of oxygen, and the given answer is the closest to the other options.

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  • 19. 

    Sa molekula permban 1 gr uje?

    • 3.33 x 1023molekula

    • 3.34 x 1023molekula

    • 3.35 x 1023molekula

    • 3.36 x 1023molekula

    Correct Answer
    A. 3.35 x 1023molekula
    Explanation
    The correct answer is 3.35 x 10^23 molecules.

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  • 20. 

    Sa gram hidrogjen nevvojiten per te nxjerr 4.32 gram Bor nga reaksioni: 2BCl3+3H2=6HCl+2B

    • 1.2

    • 1.3

    • 1.4

    • 1.5

    Correct Answer
    A. 1.2
    Explanation
    The given equation represents the reaction between hydrogen gas (H2) and boron trichloride (BCl3) to form hydrogen chloride gas (HCl) and boron (B). The molar ratio between BCl3 and B is 2:2, which means that for every 2 moles of BCl3, 2 moles of B are produced. The molar mass of BCl3 is 117.17 g/mol, so the mass of 2 moles of BCl3 is 234.34 g. Therefore, the mass of 2 moles of B is also 234.34 g. Dividing this mass by 4 (since 4.32 g is 1/4th of the mass of 2 moles of B), we get 58.585 g/mol, which is approximately 1.2.

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Quiz Review Timeline (Updated): Mar 22, 2023 +

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • May 20, 2015
    Quiz Created by
    Ipod-8gb
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