Question

Solar cooker takes more time as compared to the LPG to boil potato or rice, yet Kunal uses solar cooker for such type of cooking: 

(i) Why does Kunal uses Solar cooker instead of LPG? Give reasons for your Answer. 

(ii) Name the phenomenon which is responsible for obtaining high temperature in solar cooker.

Answer 1

(a) (i) There are no energy losses while cooking on the solar cooker as the food gets cooked in a controlled environment whereas cooking on the LPG leads to maximum percentage of energy loss. 

(ii) Temperature controlled cooking retains the nutrient value of the food. 

(iii) Using the solar cooker, LPG can be served which result reduction in the emission of CO₂. 

(iv) It saves a lot of prestigious time which is normally consumed for cooking purpose. (b) Greenhouse effect.