Discussion
Assertion (A) : The steam engine was invented by James Watt.
Reason (R) : There was a problem of taking out water from flooded mines.
Answer: A
Correct answer: Both A and R are true and R is the correct explanation of A.
Watt’s engine was built for the task of draining flooded mines, and his separate condenser reduced its fuel consumption so far that the engine became commercially practical. The mining problem is precisely what drove its development. Both are true and R explains A.
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