MHT CET 2021 24th September Evening Shift | Thermodynamics Question 134 | Chemistry

When certain volume of gas expands against a constant external pressure of $$2.40 \times 10^5 \mathrm{~Pa}$$ at 300 $$\mathrm{K}$$ to $$2.2 \times 10^{-3} \mathrm{~m}^3$$. If the work obtained is $$-0.048 \mathrm{~kJ}$$. What is the initial volume of the gas?

$$2 \times 10^{-3} \mathrm{~m}^3$$

$$4.5 \times 10^{-2} \mathrm{~m}^3$$

$$1.5 \times 10^{-3} \mathrm{~m}^3$$

$$2.8 \times 10^{-2} \mathrm{~m}^3$$

MHT CET 2021 24th September Evening Shift

MCQ (Single Correct Answer)

-0

What is internal energy change when $$62 \mathrm{~J}$$ of work is done on the system and $$128 \mathrm{~J}$$ of heat is transferred to surrounding?

$$-62 \mathrm{~J}$$

$$-190 \mathrm{~J}$$

$$-128 \mathrm{~J}$$

$$-66 \mathrm{~J}$$

MHT CET 2021 24th September Morning Shift

MCQ (Single Correct Answer)

-0

A gas is allowed to expand against a constant external pressure of 2.5 bar from an initial volume 'x' L to final volume of 4.5 L. If amount of work done is 5 dm$$^3$$ bar, what is the value of 'x'?

2.5 L

4.5 L

6.0 L

1.2 L

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