Chem quiz

Q.1  A reaction involving two different reactants can never be
       (a) Unimolecular reaction
       (b) First order reaction
       (c) second order reaction
       (d) Bimolecular reaction



Answer (a) Unimolecular reaction

Q.2 Due to the presence of an unpaired electron, free radicals are:
      (a) Chemically reactive
      (b) Chemically inactive
      (c) Anions
      (d) Cations

Answer (a) Chemically reactive

Q.3 Lattice energy of an ionic compounds depends upon
      (a) Charge on the ion only
      (b) Size of the ion only
      (c) Packing of ions only
      (d) Charge on the ion and size of the ion

Answer (d) Charge on the ion and size of the ion

Q.4 The highest electrical conductivity of the following aqueous solutions is of

      (a) 0.1 M acetic acid
      (b) 0.1 M chloroacetic acid
      (c) 0.1 M fluoroacetic acid
      (d) 0.1 M difluoroacetic acid

Answer (d) 0.1 M difluoroacetic acid

Q.5 During the process of electrolytic refining of copper, some metals present as impurity settle as           ‘anode mud’ These are

     (a) Sn and Ag
     (b) Pb and Zn
     (c) Ag and Au
     (d) Fe and Ni

Answer (c) Ag and Au