In order to increase the fertility of the soil farmers use compost. It is prepared by decomposition of the vegetables, fruits and other organic waste, the process involves a chemical reaction.
1. What is the type of the chemical reaction involved in the decomposition of vegetable matter into compost ?
(i) Exothermic
(ii) Endothermic
(iii) Combination
(iv) Displacement
2. Which of the following are exothermic processes?
(i) Burning of Natural gas
(ii) Dilution of an acid
(iii) Both (i) and (ii)
(iv) Evaporation of water
3. Which among the following changes are endothermic in nature?
(i) Decomposition of ferrous sulphate
(ii) Dissolution of ammonium chloride in water
(iii) Both (i) and (ii)
(iv) Dilution of sulphuric acid
4. Which of the following is not the type of a decomposition chemical reaction?
(i) Thermal
(ii) Electrical
(iii) Displacement
(iv) Photo
5. How many types of decomposition reaction are there ?
(i) 1
(ii) 2
(iii) 3
(iv) 4
