Chem 1st Paper Chap-3 (Test-2)

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| By Shuvro Chakravorty
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Shuvro Chakravorty
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Quizzes Created: 1 | Total Attempts: 152
| Attempts: 152
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  • 1/20 Questions

    SF6 অণুতে S এর কোন ধরণের সংকরায়ন ঘটেছে?

    • Sp2d3
    • Sp3d2
    • D2sp3
    • Sp3
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About This Quiz

This quiz titled 'Chem 1st Paper Chap-3 (Test-2)' assesses knowledge on inorganic chemistry, focusing on metalloids, ionic compounds, geometric structures, bond angles, and solubility. It evaluates understanding of chemical properties and structures, crucial for advanced chemistry studies.

Chem 1st Paper Chap-3 (Test-2) - Quiz

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  • 2. 

    [Cu(en)2]2+ আয়নে তামার সন্নিবেশ সংখ্যা কত যেখানে en= ইথিলিন ডাইঅ্যামিন ?

    • 1

    • 2

    • 4

    • 6

    Correct Answer
    A. 4
    Explanation
    The coordination number of [Cu(en)2]2+ ion is 4. This is because each ethylenediamine (en) ligand forms two coordinate bonds with the central copper ion, resulting in a total of four bonds. The coordination number represents the number of ligands directly bonded to the central metal ion in a complex.

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  • 3. 

    কোন ধাতুতে 4f বা 5f আংশিক ভাবে পূর্ণ নয়?

    • Cm

    • Cu

    • Am

    • Gd

    Correct Answer
    A. Cu
    Explanation
    The elements in the f-block of the periodic table, including the 4f and 5f series, have incomplete electron configurations. Copper (Cu) belongs to the d-block and has a completely filled 3d orbital. Therefore, it does not have any f-orbital electrons and is not considered as having partial or complete 4f or 5f electron configurations.

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  • 4. 

    নিচের কোনটি f ব্লক মৌল নয়?

    • Ce

    • Th

    • Np

    • Sm

    Correct Answer
    A. Th
    Explanation
    The element Th (Thorium) is not a f-block element. The f-block elements are also known as the inner transition metals and they consist of the lanthanides and actinides. Thorium is part of the d-block elements, specifically in Group 3. Therefore, it is not considered a f-block element and is not a part of the f-block series.

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  • 5. 

    পর্যায় সারণির কোন ব্লকে অধাতুকে স্থান দেয়া হয়েছে?

    • S

    • P 

    • D

    • F

    Correct Answer
    A. P 
  • 6. 

    পারমাণবিক সংখ্যা বৃদ্ধির সাথে সাথে নিষ্ক্রিয় যৌগের স্ফুটনাংক-

    • হ্রাস পায়

    • বৃদ্ধি পায়

    • একই থাকে

    • হ্রাস পেয়ে বৃদ্ধি পাওয়া শুরু করে

    Correct Answer
    A. বৃদ্ধি পায়
    Explanation
    পারমাণবিক সংখ্যা বৃদ্ধির সাথে সাথে নিষ্ক্রিয় যৌগের স্ফুটনাংক বৃদ্ধি পায়।

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  • 7. 

    কোনটি নিরপেক্ষ অক্সাইড?

    • PbO2

    • BaO2

    • Fe2O3

    • None

    Correct Answer
    A. None
    Explanation
    None of the given options are neutral oxides. PbO2 and BaO2 are both peroxides, which are considered as acidic oxides. Fe2O3 is an oxide of iron, which is a metal and generally forms basic oxides. Therefore, none of the options can be classified as a neutral oxide.

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  • 8. 

    লোহাকে মরিচার হাত থেকে রক্ষার জন্য কোন ধাতুর প্রলেপ দেয়া হয়?

    • Zn

    • Hg

    • Pb

    • Mn

    Correct Answer
    A. Zn
    Explanation
    Zinc (Zn) is used as a protective coating for iron and steel to prevent corrosion. It acts as a sacrificial anode, meaning it corrodes in place of the iron or steel, thus protecting them from rusting. This process is known as galvanization. Therefore, applying a zinc coating or paste on iron or steel surfaces helps to protect them from corrosion, making it the correct answer.

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  • 9. 

    বেনজিন অণুর সঞ্চারণশীল ইলেক্ট্রন কোন অরবিটাল থেকে আসে?

    • 1s

    • 2p

    • Sp2

    • Sp

    Correct Answer
    A. 2p
    Explanation
    The correct answer is 2p. In the electron configuration of an atom, the first number represents the principal energy level (n) and the letter represents the sublevel. The sublevel 2p indicates that the electron is in the second principal energy level (n=2) and in the p sublevel.

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  • 10. 

    কোনটি আয়নিক যৌগের উচ্চ গলনাংক সহায়ক?

    • ক্ষুদ্র আয়নিক ব্যাসার্ধ

    • উচ্চ আয়নিক চার্জ

    • উচ্চ ফর্মুলা ওজন

    • উচ্চ চার্জ ঘনত্ব

    Correct Answer
    A. উচ্চ চার্জ ঘনত্ব
    Explanation
    The correct answer is "উচ্চ চার্জ ঘনত্ব" (High charge density). This is because a high charge density in an ionic compound indicates a greater concentration of charge per unit volume. This leads to stronger electrostatic attractions between ions, resulting in a higher melting point and boiling point for the compound.

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  • 11. 

    ছয় সন্নিবেশ সংখ্যার যৌগিক মুলকের জ্যামিতিক কাঠামো-

    • সরলরৈখিক 

    • বর্গাকার

    • টেট্রাহেড্রাল

    • অক্টাহেড্রাল

    Correct Answer
    A. অক্টাহেড্রাল
  • 12. 

    N,O, F এর ২য় আয়নীকরণ শক্তির সঠিক ক্রম-

    • N>O>F

    • O>F>N

    • F>O>N

    • N>F>O

    Correct Answer
    A. F>O>N
    Explanation
    The correct order of the second ionization energy for N, O, and F is F > O > N. This means that it requires the most energy to remove a second electron from F, followed by O, and then N. This order is determined by the number of protons in the nucleus and the electron configuration of each element. F has the highest number of protons, making it the most difficult to remove an electron from. O has one less proton than F, making it easier to remove an electron. N has the least number of protons, making it the easiest to remove an electron.

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  • 13. 

    CnH2n গোত্রীয় যৌগের H-C-H বন্ধন কোণ-

    • 90

    • 109.5

    • 120

    • 180

    Correct Answer
    A. 109.5
    Explanation
    The correct answer is 109.5. The bond angle in a molecule with a general formula of CnH2n is approximately 109.5 degrees. This is because the carbon atom forms four sigma bonds, resulting in a tetrahedral geometry. In a tetrahedral arrangement, the bond angles between the carbon and hydrogen atoms are approximately 109.5 degrees.

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  • 14. 

    SF4 অণুর সঠিক আকার-

    • দ্বিপিরামিড আকৃতির

    • বর্গাকার সমতলীয় 

    • বিকৃত চতুস্তলকীয়

    • ত্রিকোণ পিরামিড আকারের

    Correct Answer
    A. বিকৃত চতুস্তলকীয়
    Explanation
    The correct answer is "বিকৃত চতুস্তলকীয়" (distorted tetrahedral). This means that the molecule SF4 has a distorted tetrahedral shape. A regular tetrahedron has four identical bonds and no lone pairs, but in SF4, there is one lone pair of electrons on the central sulfur atom, causing the shape to be distorted.

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  • 15. 

    নিচের কোনটি মেটালয়েড?

    • Mg

    • Sc

    • Si

    • Ar

    Correct Answer
    A. Si
    Explanation
    Among the given options, Si (Silicon) is the only metalloid. Metalloids are elements that have properties of both metals and nonmetals. Silicon is a chemical element with atomic number 14 and it is a semiconductor, which means it can conduct electricity under certain conditions. Therefore, Si is the correct answer as it is the only metalloid among the given options.

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  • 16. 

    কোনটি পানিতে অদ্রবণীয়?

    • Na2CO3

    • FeSO4

    • CaCO3

    • CaCl2

    Correct Answer
    A. CaCO3
    Explanation
    CaCO3 is insoluble in water.

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  • 17. 

    কোনটি বিরল মৃত্তিকা মৌল?

    • Zn

    • La

    • Cu

    • Ca

    Correct Answer
    A. La
    Explanation
    Among the given options, La (Lanthanum) is the rarest and most scarce mineral. It is a rare earth metal and is not commonly found in large quantities in nature. On the other hand, Zn (Zinc), Cu (Copper), and Ca (Calcium) are more abundant and commonly found minerals. Therefore, La is the rarest mineral among the given options.

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  • 18. 

    নিচের বন্ধনগুলার মধ্যে কোনটি শুন্য ক্রমের?

    • F2

    • N2

    • H-F

    • He2

    Correct Answer
    A. He2
  • 19. 

    NH4+ আয়নের আকৃতি-

    • চতুস্তলকীয়

    • ত্রিভুজাকার

    • ত্রিকোণ পিরামিড

    • সরলরৈখিক

    Correct Answer
    A. চতুস্তলকীয়
    Explanation
    The correct answer is "চতুস্তলকীয়" which means "tetrahedral" in English. This term refers to a molecular shape in which there are four atoms or groups of atoms bonded to a central atom, arranged in a tetrahedral shape. In the case of NH4+, the central nitrogen atom is bonded to four hydrogen atoms, forming a tetrahedral shape.

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  • 20. 

    কাঁচের সাথে বিক্রিয়াকারী মৌলের নাম-

    • Br

    • Na

    • F

    • Si

    Correct Answer
    A. F
    Explanation
    The correct answer is F. This is because the question is asking for the name of the element that reacts with glass. The element that reacts with glass is fluorine (F).

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  • Current Version
  • Aug 27, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jul 23, 2020
    Quiz Created by
    Shuvro Chakravorty

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