NCERT Exemplar Solutions
Class 10 - Science - CHAPTER 2: Acids, Bases and Salts - Multiple Choice Questions
Question 20

Question.  20

In an attempt to demonstrate electrical conductivity through an electrolyte, the following apparatus was set up. Which among the following statement(s) is(are) correct?

(i) Bulb will not glow because electrolyte is not acidic

(ii) Bulb will glow because NaOH is a strong base and furnishes ions for conduction

(iii) Bulb will not glow because circuit is incomplete

(iv) Bulb will not glow because it depends upon the type of electrolytic solution

(a)

(i) and (iii)

(b)

(ii) and (iv)

(c)

(ii) only

(d)

(iv) only

Detailed Answer with Explanation:

Steps: Dilute NaOH is a strong electrolyte and provides ions (Na⁺, OH⁻) which conduct electricity; hence the bulb will glow. The correctness depends on ionic presence, not acidity specifically.

NCERT Exemplar Solutions Class 10 – Science – CHAPTER 2: Acids, Bases and Salts – Multiple Choice Questions | Detailed Answers