Consider the following statements: (a) Both acids and bases change colour of all indicators. (b) If an indicator gives a colour change with an acid, it does not give a change with a base. (c) If an indicator changes colour with a base, it does not change colour with an acid. (d) Change of colour in an acid and a base depends on the type of the indicator. Which of these statements are correct? (i) All four (ii) a and d (iii) b, c and d (iv) only d
ScienceClass 7CBSEAnswered 27 Mar 2026
Answer
Solution:
(iv) Only d is correct
Important topics covered in NCERT Solutions for Class 7 Chapter 5 Acids, Bases and Salts
|
Section Number |
Topic |
|
1 |
Acids and Bases |
|
2 |
Natural Indicators around Us |
|
3 |
Neutralisation |
|
4 |
Neutralisations in Everyday Life |
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