UPSC Government Jobs Exams

Hydrogen fuel cell vehicles produce one of the following as “exhaust”.[UPSC 2010 (CS-P)]

NH3
CH4
H2O
H2O2

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UPSC Other Question

Given below are the names of four energy crops. Which one of them can be cultivated for ethanol? [UPSC 2010 (CS-P)]

Jatropha
Maize
Pongania
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