Question 171 markMCQSection Section A

Assertion (A) : It is advised that while diluting an acid one should add water to acid and not acid to water keeping the solution continuously stirred.

Reason (R) : The process of dissolving an acid into water is highly exothermic.

Acids, Bases and Salts
Dilution of Acids

Options

(a)Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of (A).
(b)Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of (A).
(c)Assertion (A) is true, but Reason (R) is false.
(d)Assertion (A) is false, but Reason (R) is true.

Official answer

(a)

Analysis and explanation

The correct answer is (a) because it is advised that while diluting an acid, one should add water to acid and not acid to water, keeping the solution continuously stirred. This is because the process of dissolving an acid into water is highly exothermic, and adding water to acid helps to dissipate the heat generated, preventing the mixture from splashing out and causing burns.

Question details

Q17 of 39 questions

Board
CBSE
Class
Class 10
Subject
Science
Year
2023
Section
Section Section A
Marks
1
Type
MCQ
Chapter
Acids, Bases and Salts
Topic
Dilution of Acids
Bloom's level
Remembering
Syllabus topic
Dilution of Acids

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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 "Acids, Bases and Salts" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "Dilution of Acids" 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 Section A in the CBSE Class 10 Science 2023 paper.