Question

Fill in the blanks
1. Bases turn red litmus to …………………..
2. Reaction of acids and bases forms and ………………….
3. Acid reacts with sodium bicarbonate and evolves …………… gas.
4. HCl + NaOH → …………… + ……………..

Answer 1

1. blue

2. neutralization

3.and 4. very sorry i dont  know

Answer 2

Answer:

(1)Blue

(2)Salt and water

(3)Carbon-di-oxide

(4)NaCl + $H_{2}O$

Explanation:

(1) Litmus paper is paper which is used to identify the behaviour of substances in the term of acid, and base.

Acid turns blue litmus to red and base turn red litmus to blue.

So, answer is blue.

(2)Acid and base reacts and produced salt and water ,this reaction is known as neutralisation reaction.

(3)Acid reacts with sodium bicarbonate to produced carbon-di-oxide.

(4)HCl + NaOH → NaCl + $H_{2}O$