Question

3. Which of these will not dissolve in water?
(a) Ink
(b) Coconut oil
(c) Milk
Which of these gases is dissolved in water and utilized by the aquatic animals for
breathing?
(a) Carbon dioxide (b) Hydrogen
(c) Oxygen
5. Which of these is a permanent change and cannot be reversed?
(a) Rusting of iron (b) Freezing of water
(c) Heating of ice​

Answer 1

Answer:

3. b) coconut oil✓

Explanation:

5. a) rusting of iron✓

Answer 2

Answer:

3.(B) coconut oil

4.(c)oxygen

5.(b)Freezing of water