Target Exam

CUET

Subject

Chemistry

Chapter

Physical: Electro Chemistry

Question:

Which of the following statements are correct?

(A) Solutions of acids, bases and salts are the examples of electrolytic conductors.
(B) Solutions of cane sugar, glycerin, alcohol are examples of non-electrolytes.
(C) Oxidation takes place at cathode while reduction takes place at anode in an electrolytic cell.
(D) Silicon and germanium are used in semiconductor devices.

Choose the correct answers from the options given below.

Options:

(A), (C) and (D) only

(B), (C) and (D) only

(A), (B) and (D) only

(A), (B) and (C) only

Correct Answer:

(A), (B) and (D) only

Explanation:

The correct answer is Option (3) → (A), (B) and (D) only

Core Concept

Electrolytic conductors conduct electricity through ions. Oxidation always occurs at anode and reduction at cathode. Non-electrolytes do not ionize in solution.

Explanation of Each Option

(A) Solutions of acids, bases and salts are the examples of electrolytic conductors.

They dissociate into ions in aqueous solution. Movement of ions allows conduction of electricity. Hence, correct.

(B) Solutions of cane sugar, glycerin, alcohol are examples of non-electrolytes.

They do not ionize in water. No free ions are produced. Hence, correct.

(C) Oxidation takes place at cathode while reduction takes place at anode in an electrolytic cell.

This is incorrect. Oxidation always occurs at anode. Reduction occurs at cathode.

(D) Silicon and germanium are used in semiconductor devices.

Both are intrinsic semiconductors. Widely used in electronic devices. Hence, correct.