Question

1. Crystallization is a process to obtain
b. Pure liquids only
a. Pure solids only
d. Solid or liquid
c. Pure solids and liquids

2. Rusting of iron can be prevented by
a. Galvanization
b. Electroplating
C. All of the above
c. Alloying

3. Which of the following is not a chemical change?
a. Spoiling of food
b. Heating an iron rod
c. Curdling of milk
d. Planting a free

4. In which type of reaction, no new substance is formed?
a. Endothermic reaction
b. Exothermic reaction
c. Chemical reaction
d. Sublimation of a substance​

Answer 1

Answer:

1. pure solid and liquids

2. galvanization

3. planting a tree

4. sublimation of a substance

Answer 2

Answer:

1. pure solid only.

2. all of the above.

3.planting a tree.

4.sublimation of a substance.

Explanation:

Hope it helps you.