Quiz on Neutralization

1. What happens when sodium hydroxide with litmus solution are added with hydrochloric acid slowly?

The solution turns yellow.

The solution turns red.

The solution turns blue.

The solution turns orange.

2.Name the two products formed when hydrochloric acid mixes with sodium hydroxide.

Water and Sodium nitrate

Water and Sodium oxide

Water and Sodium chloride

Water and Sodium sulphate

3. Describe the observable changes when equal volume of hydrochloric acid and sodium hydroxide of the same concentration with universal indicator added mix together.

Green coloured solution will be formed.

Red coloured solution will be formed.

Blue coloured solution will be formed.

White coloured solution will be formed.

4. State the condition of the soil suitable for growing vegetables.

Slightly alkaline soil

Neutral soil

Slightly acidic soil

5. What is gastric acid?

Carbonic acid

Nitric acid

Sulphuric acid

Hydrochloric acid

6. What is the chemical composition of antacids?

Magnesium hydroxide

Sodium hydroxide

Potassium hydroxide

Ammonium hydroxide (Ammonia)

7. What kind of chemical is present in the mosquito bites?

Formic acid

Ethanoic acid

Propanoic acid

Butyric acid

8.What is the nature of the secretion of the stings of wasps?

Acidic

Neutral

Alkaline

9. Sulphuric acid is used to clean the surface of steel plates before they are plated with colouring substances. Suggest a way to treat the acidic waste water before it is discharged into the environment.

Directly discharged to river.

Acidic waste water is treated with largeamount of water to dilute the excess acid.

Acidic waste water is treated with lime toneutralize the excess acid.

Universal indicator is added to acidic wastewater to test its pH value.

10. What is the pH of waste water discharged from dying factory?

Acidic, pH 1-3

Acidic, pH 4-6

Alkaline, pH 10-12

Alkaline, pH 13-14