Question

D. Long answer questions
1. List some properties of acids and bases
2. Give any three examples of acids. Give any two uses of each of them.
3. Give any three examples of bases. Give any two uses of each of them.
4. What is the effect of sulphuric acid on the following?
(a) Red litmus
(b) Blue litmus
(c) Phenolphthalein
5. Explain the following:
(a) Calamine lotion is applied on bee stings.
(b) Antacids are taken in case of acidity in stomach.
(c) Slaked lime is added to factory waste before it is discharged into rivers.
LET'S RECALL​

Answer 1

Answer:

1=acid have ph value less than 7.it is sour in taste.

base have ph value greater than 7.it is bitter in taste

Explanation:

eg nitric acid,hydrochloric acid,sulphuric acid.

   

Answer 2

Answer:

1. Acid is sour in taste
2. Base is bitter in taste

Explanation:

Hydrochloric acid

Nitric acid

Carbonic acid

Bases:

Sodium hydroxide

Magnesium hydroxide

calcium hydroxide