MEDIUM
7th CBSE
IMPORTANT
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When an ant stings a person, it injects a liquid into the skin of the person which contains:

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Important Questions on Acids, Bases and Salts

MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Multiple Choice Questions (MCQs)>Q 63

The two indicators which give red or pink colour on adding a basic solution are:

A. China rose indicator                             

B. Turmeric paper indicator 

C. Phenolphthalein indicator                   

D. Blue litmus indicator 

HARD
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Multiple Choice Questions (MCQs)>Q 64
When an ant stings a person, it causes burning pain. Which of the following should be rubbed on the stung area of skin to get relief?
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Multiple Choice Questions (MCQs)>Q 65
The substance which can turn blue litmus to red is:
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Multiple Choice Questions (MCQs)>Q 66
A yellow stain of turmeric containing curry on a white shirt turns red when soap solution is scrubbed on it. This shows that soap solution is:
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Multiple Choice Questions (MCQs)>Q 67

A certain solution does not change the colour of any indicator. This solution is most likely to be: 

MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Multiple Choice Questions (MCQs)>Q 68
Which of the following does not cause acid rain?
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Multiple Choice Questions (MCQs)>Q 69

Which of the following is a mineral acid? 

EASY
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Multiple Choice Questions (MCQs)>Q 70
Which indicator will produce a pink colour on adding a few drops of sodium hydroxide solution?