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In a dry cell (battery), which of the following are used as electrolytes?
Hydrogen fuel-cell vehicles produce one of the following as “exhaust”.
Assertion (A): The main constituent of the Liquefied Petroleum Gas is methane. Reason (R): Methane can be used directly for burning in homes and facto
The correct answer is option (c): Isotope Technology. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
This question was asked in UPSC CSE Prelims 2008, GS Paper 1, as Question 105. It falls under Science & Technology > Energy & Environment.
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
UPSC has asked 48 questions from Energy & Environment (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.