Chemical Thermodynamics-State Functions (NEET Chemistry): Questions 1 - 7 of 11

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Question number: 1

» Chemical Thermodynamics » State Functions » Entropy

MCQ▾

Question

The freezing of water will be non spontaneous at 274K, the ∆S will be?

Choices

Choice (4) Response

a.

∆ S < 0

b.

∆ S > 0

c.

∆ S ≠ 0

d.

∆ S = 0

Question number: 2

» Chemical Thermodynamics » State Functions » Entropy

MCQ▾

Question

If an endothermic reaction occurs spontaneously at constant temperature T and pressure P, then which of the following is true?

Choices

Choice (4) Response

a.

∆ H < 0

b.

∆ G > 0

c.

∆ S < 0

d.

∆ S > 0

Question number: 3

» Chemical Thermodynamics » State Functions » Entropy

MCQ▾

Question

For an isolated system at equilibrium state the entropy ∆ S will be?

Choices

Choice (4) Response

a.

∆ S ≠ 0

b.

∆ S > 0

c.

∆ S = 0

d.

∆ S < 0

Question number: 4

» Chemical Thermodynamics » State Functions » Entropy

MCQ▾

Question

If an endothermic reaction occurs spontaneously at constant temperature T and pressure P, then which of the following is true?

Choices

Choice (4) Response

a.

∆ S < 0

b.

∆ G > 0

c.

∆ S > 0

d.

∆ H < 0

Question number: 5

» Chemical Thermodynamics » State Functions » Entropy

MCQ▾

Question

Oxygen gas weighing 64 g is expanded from 1atm to 0.25atm at 30°C. Calculate entropy Change, assuming the gas to be ideal?

Choices

Choice (4) Response

a.

-23.053 J/K

b.

2.305 J/K

c.

-2.305 J/K

d.

23.053 J/K

Question number: 6

» Chemical Thermodynamics » State Functions » Entropy

MCQ▾

Question

Calculate the entropy change when 1 mole of nitrogen gas expands isothermally and reversibly from an initial volume of 1 liter to a final volume of 10 liter at 27°C?

Choices

Choice (4) Response

a.

19.12 J/K

b.

1.912 J/K

c.

-19.12 J/K

d.

-1.912 J/K

Question number: 7

» Chemical Thermodynamics » State Functions » Internal Energy

MCQ▾

Question

Which of the following unit represents largest amount of energy?

Choices

Choice (4) Response

a.

Carrie

b.

Erg

c.

Electron volt

d.

Joule

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