Q2
1 markMCQSection A

In the given experimental set-up, if the experiment is carried out separately with each of the following solutions the cases in which the bulb will glow is/are :

(i) Dilute hydrochloric acid

(ii) Dilute sulphuric acid

(iii) Glucose solution

(iv) Alcohol

Figure for question 2
Chemical Reactions and Equations
Chemical Reactions

Options

(a)(i) only
(b)(ii) only
(c)(i) and (ii)
(d)(ii), (iii) and (iv)
Official Answer

The correct answer is (c) (i) and (ii). The bulb will glow when the experiment is carried out with dilute hydrochloric acid and dilute sulphuric acid. This is because these acids are strong electrolytes and can conduct electricity, causing the bulb to glow.

dilute hydrochloric aciddilute sulphuric acidglucose solutionalcohol

Marking Scheme

  • 1(i) only
  • 2(ii) only
  • 3(i) and (ii)
  • 4(ii), (iii) and (iv)

Hint

The student should recall the properties of strong electrolytes and their ability to conduct electricity.

Quick Oral Answer

The bulb will glow when the experiment is carried out with dilute hydrochloric acid and dilute sulphuric acid because they are strong electrolytes and can conduct electricity.

Analysis & Explanation

This question requires the student to understand the concept of chemical reactions and electrolysis. The student needs to identify the solutions that can conduct electricity and cause the bulb to glow. The correct answer is (c) (i) and (ii), which indicates that the bulb will glow when the experiment is carried out with dilute hydrochloric acid and dilute sulphuric acid.

Common Mistakes

  1. 1thinking that all acids are strong electrolytes
  2. 2not considering the properties of glucose solution and alcohol

Interesting Facts

strong electrolytes can conduct electricity

glucose solution and alcohol are not good conductors of electricity

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Frequently Asked Questions

How many marks does this question carry in CBSE Class 10 Science 2023?

This question carries 1 mark in the CBSE Class 10 Science 2023 examination.

Which chapter does this question come from in Science?

This question is from the chapter "Chemical Reactions and Equations" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "Chemical Reactions" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2023 paper?

This is a MCQ question from Section A in the CBSE Class 10 Science 2023 paper.