Practice set (MCQ of chemical reactions and equations)

1.The conversion of ferrous sulphate to ferric sulphate is ........ reaction

1. combination reaction
2. decomposition reaction
3. oxidation reaction
4. double displacement reaction

2. Before burning in air, the magnesium ribbon is cleaned by rubbing with a sand paper to :

1. Make the ribbon surface shiner
2.Remove the layer of magnesium oxide from the ribbon surface 3. Remove the layer of magnesium carbonate from the ribbon surface
4. Remove the moisture from the ribbon surface

3. In a chemical reaction between sulphuric acid and barium chloride solution the white precipitate formed are of:

1. Hydrochloric acid
2. sulphate
Barium sulphate
4. Barium chloride

4. The respiration process during which glucose undergoes combustion by combining with oxygen in the cells of our body to produce energy, is a :

1. Exothermic process
2. Endothermic process
Reversible process
4. Irreversible process

5. One of the following process does not involve a chemical reaction is:

1. Melting of candle wax when heated
2. Burning of candle
Digestion of food in our stomach
4. Ripening of banana

6. It is necessary to balance a chemical equation in order to satisfy the law of:

1. conservation of momentum
2. Law of multiple proportion
law of motion
law of conservation of mass

7. When ferrous sulphate is heated strongly it undergoes decomposition to form ferric oxide as a main product accompanied by a change in colour:

1. Blue to green
2. Green to blue
Green to brown
4. Green to Red

8. Which of the following gas is used for storing of oils and fats for a long time:

1. Carbon dioxide gas
2. Nitrogen gas
Oxygen gas
Neon gas

div class="scp-quizzes-data">

9. The displacement reaction between iron(III)oxide and a metal X is used for welding the rail tracks. Here X is:

1. Copper
2. Magnesium
Sodium
Aluminium

10. The neutralization reaction between an acid and a base is a type of:

1. Double displacement reaction
2. Displacement reaction
3. Decomposition reaction
4. Redox reaction