Pumpa Practice Questions. Science CBSE, Class 7 New: lessons, tests, tasks.

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1.	Acids Difficulty: easy	2
2.	Organic acids in fruits Difficulty: medium	3
3.	Bases Difficulty: easy	1
4.	Common daily-use substances Difficulty: medium	5
5.	Safe identification of acids and bases Difficulty: easy	2
6.	Effect of litmus paper Difficulty: hard	6
7.	Acid-base indicator Difficulty: easy	2
8.	litmus paper Difficulty: easy	1
9.	Litmus as an indicator Difficulty: medium	2
10.	Preparation of lime water Difficulty: hard	3
11.	Understanding limewater Difficulty: easy	2
12.	Litmus and lime water Difficulty: easy	2
13.	Natural acid base indicator Difficulty: easy	2
14.	Preparation of red rose indicator Difficulty: hard	3
15.	Red rose indicator Difficulty: easy	1
16.	Hydrangea plant Difficulty: medium	3
17.	soil treatments and hydrangea flower colour Difficulty: easy	2
18.	Hydrangea flower Difficulty: medium	2
19.	Natural acid base indicator Difficulty: easy	2
20.	Preparation of turmeric indicator Difficulty: medium	3
21.	Testing acids and bases using turmeric Difficulty: easy	2
22.	Indicator Difficulty: hard	3
23.	Uses of turmeric Difficulty: easy	1
24.	Turmeric Difficulty: medium	3
25.	Properties and uses of turmeric Difficulty: medium	2
26.	Olfactory indicators Difficulty: easy	1
27.	Effect of olfactory indicators Difficulty: medium	2
28.	Understanding olfactory indicators Difficulty: easy	1
29.	Neutralisation reaction with example Difficulty: medium	3
30.	Neutralisation reaction Difficulty: easy	1
31.	Products of neutralisation reaction Difficulty: medium	2
32.	Reversal of litmus colour during neutralisation Difficulty: easy	1
33.	Uses of neutalisation reaction Difficulty: medium	1
34.	Neutralisation in daily life Difficulty: easy	2
35.	Understanding neutralisation in daily life Difficulty: easy	1
36.	Role of neutralisation reaction Difficulty: medium	4
37.	Applications of neutralisation in everyday life Difficulty: hard	5
38.	Riddles on neutralisation in everyday life Difficulty: medium	4

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