Gases Quiz - Learn Chemistry

25 Questions

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Gases Quiz - Learn Chemistry

Gas is one of the four fundamental states of matter. A pure gas may be made up of individual atoms, elemental molecules made from one type of atom, or compound molecules made from a variety of atoms. A gas mixture, such as air, contains a variety of pure gases. Improve your Chemistry Knowledge in this Gases Quiz!


Questions and Answers
  • 1. 
    What will be the volume of solution in dm3 , when 6.02 × 1022 molecules of sugar are present in its 1M solution
    • A. 

      1 dm3

    • B. 

      0.1 dm3

    • C. 

      0.01 dm3

    • D. 

      10 dm3

  • 2. 
    When 2g H2 gas and 16g O2 gas react completely to produce H2O. What is non-limiting reactant
    • A. 

      Hydrogen

    • B. 

      Oxygen

    • C. 

      Water

    • D. 

      Both are used Completely

  • 3. 
    How much oxygen is required to react completely with 54g of Al to form alumina
    • A. 

      24g

    • B. 

      48g

    • C. 

      72g

    • D. 

      96g

  • 4. 
    1 mole of carbon is present in one mole of which of the following species/substance
    • A. 

      CaCO3

    • B. 

      CH3CHO

    • C. 

      CH3COOH

    • D. 

      CaC2

  • 5. 
    The term relative atomic mass is used for
    • A. 

      37 amu Cl

    • B. 

      100 amu Ca

    • C. 

      35.5 amu Cl

    • D. 

      96 amu S

  • 6. 
    What are the ratio among the volumes of gases 4He ,16CH4 and 32O2, if they are taken in equal masses at STP
    • A. 

      1 : 2 : 8

    • B. 

      1: 1: 1

    • C. 

      1 : 8 : 2

    • D. 

      8 : 2 : 1

  • 7. 
    The molecular mass of D2O is
    • A. 

      18.02 amu

    • B. 

      19.04 amu

    • C. 

      20.03 amu

    • D. 

      22.04 amu

  • 8. 
    Total number of carbon atoms are present in 44g of CO2
    • A. 

       0.5 NA

    • B. 

      2NA

    • C. 

      1 NA

    • D. 

      3NA

  • 9. 
    One mole of each of the following compounds is burnt in excess of oxygen. Which compound will produce three moles of carbon dioxide and three moles of steam only
    • A. 

      C3H8

    • B. 

      C3H7CO2H

    • C. 

      C3H7OH

    • D. 

      CH3COOCH3

  • 10. 
    What is volume occupied by 4.4g of N2O at STP
    • A. 

      22400cm3

    • B. 

      2240 cm3

    • C. 

      1120 cm3

    • D. 

      120 cm3

  • 11. 
    11200 cm3 of oxygen gas is collected at STP from Hydrilla plant by photosynthesis. The mass of oxygen gas produced is
    • A. 

      32 g

    • B. 

      16 g

    • C. 

      8 g

    • D. 

      4 g

  • 12. 
    Which of the following has minimum mass
    • A. 

      6.02×1023 molecules of H2

    • B. 

      22.4 dm3 of He

    • C. 

      0.25 mole of Ne

    • D. 

      10g of Ca

  • 13. 
    3×NA number of ionizeable H+ are present in 1 mole of
    • A. 

      H2SO4

    • B. 

      H3BO3

    • C. 

      H3PO4

    • D. 

      CH3COOH

  • 14. 
    What is the mass of CaCO3 which on heating produces 0.25 moles of CO2 gas
    • A. 

      12.5 g

    • B. 

      25 g

    • C. 

      50 g

    • D. 

      100 g

  • 15. 
    The mass of one mole of electron is
    • A. 

      9.1 × 10–31 kg

    • B. 

      1.602 × 10–19 kg

    • C. 

      0.55 mg

    • D. 

      0.55g

  • 16. 
    The number of carbon atoms in 45g of C6H12O6
    • A. 

      6 × NA

    • B. 

      3 × NA

    • C. 

      1.5 × NA

    • D. 

      0.25 × NA

  • 17. 
    N2 (g)  + O2 (g) -------------->   2NO (g)  Volume of nitric oxide gas produced by the following reaction of 7g N2 with excess of oxygen is
    • A. 

      22.4dm3

    • B. 

      5.6 dm3

    • C. 

      11.2 dm3

    • D. 

      2.8 dm3

  • 18. 
    Number of grams of NaOH required for complete neutralization of 1mole of H3PO4 on its complete ionization
    • A. 

      120 g

    • B. 

      100 g

    • C. 

      80 g

    • D. 

      40 g

  • 19. 
    H2O, HF and Na+ have same
    • A. 

      Mass Number

    • B. 

      Number of Electrons

    • C. 

      Number of protons

    • D. 

      Number of neutrons

  • 20. 
    What volume of NH3 is produced on reacting 20cm3 of N2 with 80cm3 of H2
    • A. 

      80 cm3

    • B. 

      40 cm3

    • C. 

      20 cm3

    • D. 

      10 cm3

  • 21. 
    Electrolysis of water produce hydrogen and oxygen gas. When 1mole of water is electrolyzed it gives
    • A. 

      1mole of nascent hydrogen

    • B. 

      2 mole of H+ ions

    • C. 

      1 mole of oxygen gas

    • D. 

      ½ mole of oxygen gas

  • 22. 
    Mole of a substance can be related
    • A. 

      NA

    • B. 

      Molar volume

    • C. 

      Molar mass

    • D. 

      All of these

  • 23. 
    The statement which is incorrect about stoichiometric calculation
    • A. 

      All reactants are converted into products

    • B. 

      No side reaction occurs

    • C. 

      Law of conservation of mass and law of definite proportion are obeyed

    • D. 

      Reactions may be reversible

  • 24. 
    At STP a gas which has maximum volume
    • A. 

      32g of O2

    • B. 

      4.0g He

    • C. 

      24g of CH4

    • D. 

      4g of H2

  • 25. 
    Number of electrons in 34 g of OH- ion is
    • A. 

      20 NA

    • B. 

      2 NA

    • C. 

      10 NA

    • D. 

      5 NA

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