Lemon juice contains acid.

Important Questions on Acids and Bases

EASY

7th CBSE

IMPORTANT

New Science Spark Book 7>Chapter 6 - Acids and Bases>Put on your THINKING CAP!>Q 4

_____ is an indicator extracted from lichens.

EASY

7th CBSE

IMPORTANT

New Science Spark Book 7>Chapter 6 - Acids and Bases>Put on your THINKING CAP!>Q 4

An ant bite can be treated by applying a _____ solution. (Washing soda / Baking soda)

EASY

7th CBSE

IMPORTANT

New Science Spark Book 7>Chapter 6 - Acids and Bases>Put on your THINKING CAP!>Q 5

Name the acid present in curd.

EASY

7th CBSE

IMPORTANT

New Science Spark Book 7>Chapter 6 - Acids and Bases>Put on your THINKING CAP!>Q 5

Name the acid present in lemon juice. (Lactic acid/ Malic acid/ Citric acid)

EASY

7th CBSE

IMPORTANT

New Science Spark Book 7>Chapter 6 - Acids and Bases>Put on your THINKING CAP!>Q 5

The acid present in an ant bite is _____.

EASY

7th CBSE

IMPORTANT

New Science Spark Book 7>Chapter 6 - Acids and Bases>Put on your THINKING CAP!>Q 5

Name the acid present in car batteries.

EASY

7th CBSE

IMPORTANT

New Science Spark Book 7>Chapter 6 - Acids and Bases>Put on your THINKING CAP!>Q 5

Name the acid present which brings fizz in cold drink.

MEDIUM

7th CBSE

IMPORTANT

New Science Spark Book 7>Chapter 6 - Acids and Bases>Put on your THINKING CAP!>Q 6

Match the following:

(a) pH	(i) a product of reaction of an acid with a base
(b) phenolphthalein	(ii) the scale used to measure acidity/basicity
(c) salt	(iii) damaging material it touches
(d) acid	(iv) has a high concentration of ${\mathrm{H}}^{+}$ ions
(e) base	(v) a type of indicator
(f) corrosive	(vi) a substance which changes colour in acid or base
(g) indicator	(vii) has a high concentration of ${\mathrm{OH}}^{-}$ ions