Question

MCQ)

1.) Identify each salt as acidic , basic or neutral

a. KCl b. NaNO3 c. (NH4)2SO4

Fill in the blanks:-

2.) MgCl2 is made from………acid and ……… base

3.)A. Why is it advised to brush your teeth after

every meal?

B.) Name the acid produced in Stomach?

C.) How does aquatic life get affected due to acid rain?

4.) How does an antacid work? Name two common

antacids.

5.) A plant grows best when the pH of the soil is7.2.

But the pH of the soil is found to be 5.6.Name the

chemical (and its nature also) that should be added to

the soil to adjust its pH to make it suitable for plant
growth.​

Answer 1

Answer:

1. KCl - Neutral salt

NaNO3 - Neutral salt

(NH4)2SO4 - Acidic salt

2.HCl and Mg(OH)2

3.To take out the sugar present in mouth after eating as these can cause cavities by the effect of bacteria present in mouth

B. Hydrochloric acid

5. Base should be added