Give two main uses of ammonium hydroxide $({NH}_{4} OH)$ .

Important Questions on Acids, Bases and Salts

MEDIUM

7th CBSE

IMPORTANT

Living Science 7>Chapter 7 - Acids, Bases and Salts>EXERCISES>Q D

Give two main uses of sodium hydroxide.

HARD

7th CBSE

IMPORTANT

Living Science 7>Chapter 7 - Acids, Bases and Salts>EXERCISES>Q D

State two methods by which salts can be prepared. Give one example of each.

HARD

7th CBSE

IMPORTANT

Living Science 7>Chapter 7 - Acids, Bases and Salts>EXERCISES>Q D

What is soap? How can you make soap in the laboratory?

HARD

7th CBSE

IMPORTANT

Living Science 7>Chapter 7 - Acids, Bases and Salts>EXERCISES>Q D

How are salts named? Give two examples.

HARD

7th CBSE

IMPORTANT

Living Science 7>Chapter 7 - Acids, Bases and Salts>EXERCISES>Q 1

If you get a turmeric (haldi) stain on your clothes while eating food, and try to wash it off with soap, the stain becomes red. Why? Find out how to remove haldi stains from clothes.

HARD

7th CBSE

IMPORTANT

Living Science 7>Chapter 7 - Acids, Bases and Salts>EXERCISES>Q 2

Is the meaning of 'weak acid' the same as that of 'dilute acid'?

HARD

7th CBSE

IMPORTANT

Living Science 7>Chapter 7 - Acids, Bases and Salts>EXERCISES>Q 3

The wastes of many factories contain acids. Why is it considered necessary to neutralize them before allowing the wastes to flow into water bodies?

HARD

7th CBSE

IMPORTANT

Living Science 7>Chapter 7 - Acids, Bases and Salts>EXERCISES>BE A SCIENTIST

You are given equal quantities of two liquids in beakers. You are told that one of them is a strong acid and the other is a weak acid. Both are in concentrated form. You are also given a basic solution and an indicator. How will you determine which beaker has a strong acid and which has a weak acid?