1 markMCQSection A

The values of a, b, c and d in the following balanced chemical equation are respectively:

$a Pb(NO_3)_2 \xrightarrow{heat} b PbO + c NO_2 + d O_2$

Chemical Reactions and Equations

Options

(A)1, 1, 2, 1

(B)1, 1, 1, 2

(D)2, 2, 4, 1

Official Answer

The correct answer is 1, 1, 2, 1.

Balanced chemical equationvalues of abc and d

Marking Scheme

11 mark

Hint

The question is based on the balanced chemical equation.

Quick Oral Answer

The values of a, b, c and d are 2, 2, 4 and 1 respectively.

Analysis & Explanation

The question asks for the values of a, b, c and d in the given balanced chemical equation. The correct answer is 1, 1, 2, 1 because the balanced chemical equation is $2Pb(NO_3)_2 \xrightarrow{heat} 2PbO + 4NO_2 + O_2$ .

Common Mistakes

1None

Interesting Facts

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Frequently Asked Questions

How many marks does this question carry in CBSE Class 10 Science 2025?

This question carries 1 mark in the CBSE Class 10 Science 2025 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 and Equations" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2025 paper?

This is a MCQ question from Section A in the CBSE Class 10 Science 2025 paper.