Electricity in voltaic cell is produced due to_________________?

Related Mcqs:

1. Voltaic cell can be recharged by______________?

   A. by addition of fresh solution
   B. by replacing external circuit with external source of electricity
   C. by removal of solution
   D. by heating it

2. Voltaic cell is a_________________?

   A. irreversible cell
   B. reversible cell
   C. alkaline cell
   D. all of the above

3. In electrolytic cell electricity carries________________?

   A. spontaneous reaction
   B. non-wpontaneous reaction
   C. neutralization
   D. all of above

4. Molten NaCl conducts electricity due to the presence of_______________?

   A. Free electrons
   B. Free molecules
   C. Free ions
   D. Atoms of Na and Cl

5. In electrolytic solution conductance of electricity is due to _____________________?

   A. free electrons
   B. ions
   C. metals
   D. electrodes

6. Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to_________________?

   A. More strength of H-bonding
   B. More strength of London forces
   C. Less polarizability
   D. All of the above

7. The boiling point increases down the zero group element due to_________________?

   A. Ion dipole forces
   B. London forces
   C. Hydrogen bonding
   D. Dipole dipole forces

8. Iodine is solid due to_________________?

   A. Strong covalent bond
   B. Large value of dipole moment
   C. High polarizability
   D. Strong hydrogen bonding

9. If electricity is passed through CuSO4 solution by using Pt electrode then which of the following possible change occurs ?

   A. H2 is deposited at cathode
   B. Colour of the solution becomes fade
   C. Cu is deposited at anode
   D. All are possible

10. Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________?

    A. ionic substances
    B. metallic substances
    C. molecular solids
    D. covalent network solids

    Submitted by: Mansoor Ul Haque