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Science CBSE Homework Assignments
Class 7
Acids, bases and salts
Litmus paper and colour change
1.
Indicators: select the correct option for the given question
Task:
4
m.
1
.
X is a compound that reacts with blue litmus and turns it to red. Find X from the below given options .
\(NaHCO_3\)
\(HNO_3\)
\(Zn(OH)_2\)
\(Al(OH)_3\)
2
.
_________ is the natural indicator.
China rose
Sodium carbonate solution
Potassium hydroxide
Washing soda in water
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