MEDIUM
7th CBSE
IMPORTANT
Earn 100

Give reason for the following:

Acids are never stored in metal or plastic containers.

Important Questions on Acids and Bases

MEDIUM
7th CBSE
IMPORTANT
New Science Spark Book 7>Chapter 6 - Acids and Bases>Put on your THINKING CAP!>Q 9

Give reason for the following:

A turmeric stain turns red when soap solution is applied to it.

MEDIUM
7th CBSE
IMPORTANT
New Science Spark Book 7>Chapter 6 - Acids and Bases>HOTS>Q 1
Ritu was stung on her hand by a wasp. Her mother applied baking soda on it. There was no relief from pain and irritation. But when she applied vinegar, she felt relieved. Why? 
MEDIUM
7th CBSE
IMPORTANT
New Science Spark Book 7>Chapter 6 - Acids and Bases>HOTS>Q 2
Mr. Suresh took some antacids. This resulted in burping. Why? 
MEDIUM
7th CBSE
IMPORTANT
New Science Spark Book 7>Chapter 6 - Acids and Bases>HOTS>Q 3
Why is the Taj Mahal turning yellow? 
MEDIUM
7th CBSE
IMPORTANT
New Science Spark Book 7>Chapter 6 - Acids and Bases>HOTS>Q 4
A scientist visited a farmer's field and found the soil to be highly acidic. He suggested the farmer add ammonia-based fertilizers. Why?