August 2022

Question: Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the
[A].

calorific value

[B].

heat of reaction

[C].

heat of combustion

[D].

heat of formation

Answer: Option C

Explanation:

No answer description available for this question.

Question: “If different processes are used to bring about the same chemical reaction, the enthalpy change is same for all of them”. This is __________ law.
[A].

Hess’s

[B].

Kirchoff’s

[C].

Lavoisier and Laplace

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: For an exothremic reaction
[A].

only enthalpy change (ΔH) is negative.

[B].

only internal energy change (ΔE) is negative.

[C].

both ΔH and ΔE are negative.

[D].

enthalpy change is zero.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Cv is given by
[A].

[B].

[C].

[D].

Answer: Option A

Explanation:

No answer description available for this question.

Question: In an irreversible process
[A].

Tds = dE – dW = 0

[B].

dE – dW – Tds = 0

[C].

Tds – dE + dW< 0

[D].

Tds – dT + dW< 0

Answer: Option C

Explanation:

No answer description available for this question.

Question: In a reversible process
[A].

Tds = dE + dW

[B].

dE – dW = Tds

[C].

dW – dE = Tds

[D].

Tds – dW + dE >0

Answer: Option A

Explanation:

No answer description available for this question.

Question: For a constant volume process
[A].

dE = CpdT

[B].

dE = CvdT

[C].

dQ = dE + pdV

[D].

dW = pdV

Answer: Option B

Explanation:

No answer description available for this question.