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1. If a cylinder containing a gas at high pressure explodes, the gas undergoes

(a)  Reversible adiabatic change and fall of temperature

(b)  Reversible adiabatic change and rise of temperature

(c)   Irreversible adiabatic change and fall of temperature

(d)  Irreversible adiabatic change and rise of temperature

Answer-a

(9)

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