Question

C3. Match the two columns
Column A
Column B
1. Colour change on ripening of fruit
(1) Decreases with temperature
2. Increase in the height of a child
(1) Present in small amount in solution
3. Solubility of gases
(iii) Irreversible change
4. Solubility of solids
(iv) Increases with temperature
5. Solute
(v) Slow change
C4. Multiple Choice Questions (MCQs): Choose the correct answer for each of the following:
1. Which of the following is a reversible change?
(a) Cooking of food
(b) Melting of ice cream
(c) Curdling of milk
(d) Rusting of iron
2. Choose the fast change from the following:
(a) Dissolving salt in cold water.
(b) Burning of paper.
(c) Ripening of mango,
(d) Changing day and night.
3. Solubility depends on
(a) temperature
(b) pressure
(c) none.
(d) both.
4. In which of the following examples, property of expansion and contraction of metals is util
(a) To fix wooden handle in iron blade,
(b) To fix metal rim on wooden wheel
(c) To separate two tightly fixed glass tumbler. (d) All of these​

Answer 1

Answer:

C3. Match the two columnsColumn A

Column B

1. Colour change on ripening of fruit

(1) Decreases with temperature

2. Increase in the height of a child

(1) Present in small amount in solution

3. Solubility of gases

(iii) Irreversible change

4. Solubility of solids

(iv) Increases with temperature

5. Solute

(v) Slow change

C4. Multiple Choice Questions (MCQs): Choose the correct answer for each of the following:

1. Which of the following is a reversible change?

(a) Cooking of food

(b) Melting of ice cream

(c) Curdling of milk

(d) Rusting of iron

2. Choose the fast change from the following:

(a) Dissolving salt in cold water.

(b) Burning of paper.

(c) Ripening of mango,

(d) Changing day and night.

3. Solubility depends on

(a) temperature

(b) pressure

(c) none.

(d) both.

4. In which of the following examples, property of expansion and contraction of metals is util

(a) To fix wooden handle in iron blade,

(b) To fix metal rim on wooden wheel

(c) To separate two tightly fixed glass tumbler. (d) All of these​

Explanation:

Answer 2

No

Colour change on ripening of fruits- slow change

2. Increase in the height of a child- Irreversible change

3. Solubility of gases-)Decreases with temperature

4. Solubility of solids-Increases with temperature

5.Solute-Present in small amount in solution