Chemistry Current Affairs 2018

  1. The molecules of which gas has the highest speed?
    A. N2 at 1,027°C
    B. CH4 at 300 K
    C. O2 at 0°C
    D. H2 at -73°C
  2. D. H2 at -73°C
  3. The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is:
    A. Dalton's law
    B. Henry's law
    C. Gay Lussac's law
    D. Raoult's law
  4. B. Henry's law
  5. The number of d-electrons in Fe2+ (Z = 26) is not equal to that of:
    A. p-electrons in Ne(Z = 10)
    B. p-electrons in CI(Z = 17)
    C. s-electrons in Mg(Z = 12)
    D. d-electrons in Fe(Z = 26)
  6. B. p-electrons in CI(Z = 17)

  7. The nucleus of a hydrogen atom consists of:
    A. 1 proton + 2 neutron
    B. 1 proton only
    C. 1 neutron only
    D. 1 electron only
  8. B. 1 proton only
  9. The heat required to raise the temperature of body by 1 K is called:
    A. Thermal Capacity
    B. Specific Heat
    C. Water Equivalent
    D. None of the above
  10. A. Thermal Capacity
  11. The inexpensive and commonly used variety of glass is called soda glass. It is called so because:
    A. was used initially for making bottles of soda(carbonated drink)
    B. was initially used for storing sodium carbonate
    C. is made using soda(sodium carbonate)
    D. is made using soda lime
  12. C. is made using soda(sodium carbonate)
  13. Microwave oven acts on the principle of:
    A. transferring electrons from lower to higher energy levels in water molecule
    B. giving rotational energy to water molecules
    C. giving vibrational energy to water molecules
    D. giving translational energy to water molecules
  14. B. giving rotational energy to water molecules
  15. The ratio of work done by an ideal monoatomic gas to the heat supplied to it in an isobaric process is:
    A. 3:5
    B. 2:3
    C. 3:2
    D. 2:5
  16. D. 2:5

  17. The metal used to recover copper from a solution of copper sulphate is:
    A. Ag
    B. Hg
    C. Fe
    D. Na
  18. C. Fe
  19. The main buffer system of the human blood is:
    A. H2CO3 - HCO3
    B. H2CO3 - CO3-2
    C. CH3COOH - CH3COO-
    D. NH2CONH2 - NH2CONH+
  20. A. H2CO3 - HCO3