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Chemistry MCQs Quiz For Entry Test
1. Fuel cells are the means by which chemical energy may be converted into:
Potential energy
Sound energy
Heat energy
Electric energy (Answer)
2. Metallic conduction is also called as:
Ionic conduction
Super conduction
Electronic conduction (Answer)
Protonic conduction
3. In electrolysis cells, the chemical changes may be:
Either spontaneous or non-spontaneous
Always non-spontaneous (Answer)
Always spontaneous
More spontaneous and less non-spontaneous
4. Electrochemistry is concerned with the conversion of electrical energy into chemical energy in:
Electrolytic cell (Answer)
Galvanic cell and Voltaic cell
Voltaic cell
Galvanic cell
5. Most metals are conductors of electricity because of the:
Light weight
Immobility of the electrons
Relatively free movement of their electrons (Answer)
Lustrous surfaces
6. Reduction or oxidation potential of standard hydrogen electrode is:
0.8 volt
1.0 volt
1.8 volt
0.0 volt (Answer)
7. Cell potential depends upon:
Temperature
All of above (Answer)
Nature of electrolyte
Concentration of ions
8. The conversion of chemical energy into electrical energy requires:
Electrolytic cell
Galvanic cell and Voltaic cell (Answer)
Voltaic cell
Galvanic cell
9. In an electrolytic cell, the electrons flow from:
Cathode to anode or opposite
Random flow
Cathode to anode
Anode to Cathode (Answer)
10. The difference of potential of two electrodes when concentration of solution is 1 M each at 25°C and 1 atm is called:
Electrode potential
Standard cell potential (Answer)
Cell voltage
Cell reaction
11. Electrolytes in the form of solution or in the fused state have the ability to conduct:
Electricity (Answer)
Ions
Light
Electrons
12. Fuel cells are mostly used in space aircrafts as the source of:
Power only
Drinking water and power (Answer)
Fuel and drinking water
Drinking water only
13. A reaction will be spontaneous if its calculated emf is:
Positive (Answer)
Negative
Positive or Negative
Zero
14. Ionization is the process in which ionic compounds when fused or dissolved in water split up into charged particles called:
Atoms
Electrons
Protons
Ions (Answer)
15. Electrolysis is used for:
Manufacture of caustic soda
All of above (Answer)
Electroplating
Refining of copper
