Physics · 2026
JEE Main · 21 January 2026, Shift 1 · Q42
A gas based geyser heats water flowing at the rate of 5.0 litres per minute from 27^° C to 87^° C. The rate of consumption of the gas is ____ g/s.…
A gas based geyser heats water flowing at the rate of $\displaystyle 5.0$ litres per minute from $\displaystyle 27^{\circ} \mathrm{C}$ to $\displaystyle 87^{\circ} \mathrm{C}$. The rate of consumption of the gas is $\displaystyle \_\_\_\_$ g/s.
(Take heat of combustion of gas $\displaystyle =5.0 \times 10^4 \mathrm{~J} / \mathrm{g}$ ) specific heat capacity of water $\displaystyle =4200 \mathrm{~J} / \mathrm{kg} .{ }^{\circ} \mathrm{C}$
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle 0.42$
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