SSC Steno Grade C and D 13 Sep 2017 Shift 1 Paper

Question : 81 of 199

Marks: +1, -0

When the volume of a gas is reduced on constant heat, its pressure _______.

first increases, but decreases later
increases
decreases
remains unchanged

Solution:

(2) Boyle’s law states that, at aconstant temperature, the volumeof a given mass of gas variesinversely with pressure. Fortwo states of pressure (P1, P2)and two corresponding volumes

(V_1, V_2),

this is stated mathematically:

P_1.V_1 = P_2.V_2

So, when the volume of a gasis reduced on constant heat, itspressure increases.

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