5. The production of solar cookers on a commercia
scale in India began in
(a) 1962
(b) 1980
(c) 1950
(d) 1970
The main constituent of natural gas is
(a) hydrogen
(b) oxygen
(c) butane
(d) methane
Answers
Answered by
1
Answer:
It began in 1980
It is methane
Answered by
4
Answer:
option b... 1980
methane right ans
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