MHT CET 2023 11th May Morning Shift | Thermodynamics Question 115 | Chemistry

What is the value of increase in internal energy when system does $$8 \mathrm{~J}$$ of work on surrounding by supplying $$40 \mathrm{~J}$$ of heat to it?

23 J

32 J

40 J

48 J

MHT CET 2023 11th May Morning Shift

MCQ (Single Correct Answer)

-0

Which among the following is TRUE for isobaric process?

$$\Delta \mathrm{U}=0$$

$$-\Delta \mathrm{U}=-\mathrm{W}$$

$$\Delta \mathrm{U}=\mathrm{Q}$$

$$\mathrm{Q}_{\mathrm{P}}=\Delta \mathrm{U}+\mathrm{P}_{\mathrm{ext}} \Delta \mathrm{V}$$

MHT CET 2023 11th May Morning Shift

MCQ (Single Correct Answer)

-0

What is value of PV type of work for following reaction at 1 bar?

$$\underset{(200 \mathrm{~mL})}{\mathrm{C}_2 \mathrm{H}_{4(\mathrm{~g})}}+\underset{(150 \mathrm{~mL})}{\mathrm{HCl}_{(\mathrm{g})}} \longrightarrow \mathrm{C}_2 \mathrm{H}_5 \mathrm{Cl}_{(\mathrm{g})}$$

$$3.5 \mathrm{~J}$$

$$4.5 \mathrm{~J}$$

$$9.0 \mathrm{~J}$$

$$15 \mathrm{~J}$$

MHT CET 2023 10th May Evening Shift

MCQ (Single Correct Answer)

-0

A gas absorbs $$200 \mathrm{~J}$$ heat and expands by $$500 \mathrm{~cm}^3$$ against a constant external pressure $$2 \times 10^5 \mathrm{~N} \mathrm{~m}^{-2}$$. What is the change in internal energy?

$$800 \mathrm{~J}$$

$$-750 \mathrm{~J}$$

$$100 \mathrm{~J}$$

$$-150 \mathrm{~J}$$

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