1.

(a) Hydrogen is used as a rocket fuel. Why ? (b) List two limitations of using solar cookers.

Answer»

Solution :(a) HYDROGEN is comparatively a cleaner fuel than any other gaseous fuel, as on its burning only water is produced which does not pollute the environment.
(b) (i) Cannot be USED in night/cloudy days.
(II) DIRECTION of REFLECTOR has to be changed from time to time.


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