Question

List any three differences between acids and bases. Give example of two acids and

two bases.​

Answer 1

Answer:

Taste:Acids are sour in taste. Bases are bitter.

Dissociation:Acids release hydrogen ions (H+) when dissolved in water. Bases release hydroxyl ions (OH–) when dissolved in water.

Dissociation constant:The dissociation constant of a strong acid is -2.The dissociation constant of a strong base is 12. Ex: soda is acidic soap is basic

Answer 2

Explanation:

1. Which one of the following is a mica producing State ?

(a) Odisha

(b) Rajasthan

(c) Kerala

(d) Assam

2. Which of the following is/are feature(s) of minerals ?

(a) Uneven distribution

(b) Definite chemical composition

(c) Originate through a natural process

(d) All of these

3. Which one of the following is a leading producer of bauxite in the world?

(a) Asia

(b) Europe

(c) Australia

(d) Africa

4. Chile and Peru are the leading producers of

(a) copper

(b) mica

(c) gold

(d) diamond

5. Which one of the following is not a non-metallic mineral ?

(a) Iron-ore

(b) Silver

(c) Limestone

(d) Manganese

6. Which one of the following is a measure to conserve the mineral resources ?

(a) Overuse of minerals

(b) Recycling of metals

(c) Wastage of minerals

(d) None of these

7. Which one of the following is a chemical property of a mineral ?

(a) Hardness

(b) Solubility

(c) Colour

(d) Density