1 |
When a non-spontaneous redox reaction is carried out by using the electrical current, then the process is called |
Decomposition of the substances
Cracking
Hydrolysis
Electroiysis
|
2 |
That cell in which electrical energy is converted into chemical energy is called |
Galvanic cell
Electrolytic cell
Fuel cell
Daniel cell
|
3 |
Electrolysis is a process in which a chemical reaction takes place at the expense of |
Chemical energy
Electrical energy
Heat energy
None of these
|
4 |
During the electrolysis of molten NaCI, the ion which is reduce is |
|
5 |
The best reducing agent is |
F<sup>-1</sup>
CI<sup>-1</sup>
Br<sup>-1 </sup>
I<sup>-1</sup>
|
6 |
According to classical concept, oxidation involves |
Addition of oxygen
Addition of electron
Removal of hydrogen
All are correct
|
7 |
|
Fe is reduced
Fe is oxidized
CI<sub>2</sub>is oxidized
None of these
|
8 |
Oxidation number of carbon in NaHCO3 |
+4
-6
+6
+2
|
9 |
If a strip of Cu metal is placed in a solution of FeSO4 |
Cu will be precipitated out
Fe is precipitated out
Cu and Fe both dissolve
No reaction takes place
|
10 |
If the salt bridge is not used between two half cells, then the voltage |
Decreases rapidly
Decreases slowly
Does not change
Drops to zero
|
11 |
Stronger the oxidizing agent, greater is the |
oxidation potential
Reduction potential
Redox potential
E.M.F of cell
|
12 |
Which of the following statements is correct about galvanic cell |
Anode is negative charged
Reduction occurs at anode
Cathode is positively charged
Reduction occurs at cathode
|
13 |
The cathodic reaction in the electrolysis of dill. H2SO4with Pt electrodes is |
Reduction
Oxidation
Both oxidation and reduction
Neither oxidation nor reduction
|