1.

An electric kettle can heat certain quantity of water from 19°C to 100°C in 6 minutes, time it takes to boil the same quantity of water into steam at 100°C in (minutes) ( L_("steam") = 540 "cal/gm")

Answer» <html><body><p>40<br/>30<br/>20<br/>50</p>Answer :A</body></html>


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