Chemistry
Assertion (A): Electrolysis establishes a relationship between electrical energy and chemical energy.
Reason (R): Substances like metals, carbon (graphite) are conductors while salts like NaCl, KCI are electrolytes.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Answer
Both A and R are true but R is not the correct explanation of A.
Explanation — Electrolysis is a process that demonstrates the conversion of electrical energy into chemical energy. Hence, assertion (A) is true.
Metals and graphite are conductors, while salts like NaCl and KCl (in molten or aqueous form) are electrolytes. Hence, Reason (R) is true.
However, knowing which substances are conductors or electrolytes does not establish the relationship between electrical and chemical energy. Hence, both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
Related Questions
The oxidation reaction among the following is :
Fe3+ + 3e- ⟶ Fe
Fe2+ - e- ⟶ Fe3+
Cl2 + 2e- ⟶ 2Cl-
Cu2+ + 2e- ⟶ Cu
During electrolysis, what happens to metallic ions and at which electrode do they get discharged ?
P Reduction of metallic ions, cathode
Q Oxidation of metallic ions, anode
R Oxidation of metallic ions, cathode
Only P
Only Q
both P and Q
Both Q and R
Assertion (A): Benzene acts as non-electrolyte.
Reason (R): Benzene does not have free ions.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Metals and alloys conduct electricity with the help of electrons.
Reason (R): Non-metals do not have free electrons.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.