Sodium Bicarbonate

Q.

Which does not happen when water is added to quick lime?

1. The hissing noise is produced

2. A precipitate is formed

3. There is a change in temperature

4. There is a change in the color of the product

Q. Take an aqueous sodium bicarbonate solution in a test tube and heat it above ${80}^{o}C$. What do you observe if the evolved gas is passed through lime water?

1. It remains uneffected
2. It turns red in colour
3. It turns milky white
4. It turns into blue colour