Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A geyser heats water flowing at a rate of 2.0 kg per minute from 30°C to 70°C. If geyser operates on a gas burner, the rate of combustion of fuel will be ____________ g min -1
[Heat of combustion = 8 x 10 3 Jg -1 Specific heat of water = 4.2 Jg -1 °C -1 ]
Text Solution
Verified by ExpertsThe correct answer is:
42
(42)
Sol. m = 2000 gm/mm
Heat required by water/min = mS 
T
= (2000) x 4.2 x 40 J/min
= 336000 J/min
The rate of combustion = 
= 336000 J / min
= 42 gm/mm
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