Chemistry Questions and Answers


General Knowledge

Chemistry


    1) The nucleus of an atom consists of

  • A)electrons and neutrons
  • B)electrons and protons
  • C)protons and neutrons
  • D)All of the above
Answer: C

    2) The number of moles of solute present in 1 kg of a solvent is called its

  • A)molality
  • B)molarity
  • C)normality
  • D)formality
Answer: A

    3) The most electronegative element among the following is

  • A)sodium
  • B)bromine
  • C)fluorine
  • D)oxygen
Answer: C

    4) The metal used to recover copper from a solution of copper sulphate is

  • A)Na
  • B)Ag
  • C)Hg
  • D)Fe
Answer: D

    5) The number of d-electrons in Fe2+ (Z = 26) is not equal to that of

  • A)p-electrons in Ne(Z = 10)
  • B)s-electrons in Mg(Z = 12)
  • C)d-electrons in Fe(Z = 26)
  • D)p-electrons in CI(Z = 17)
Answer: D