NEET Chemistry: Questions 1 - 7 of 677

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Question number: 1

» Chemical Thermodynamics » First Law of Thermodynamics » Work

MCQ▾

Question

When 50 g of iron is dissolved in HCl at 25°C in an open vessel and atmospheric pressure is 1 atm, calculate the work done?

Choices

Choice (4) Response
a.

-22.123 J

b.

-2212.39 J

c.

2212.39 J

d.

22.123 J

Question number: 2

» 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: 3

» Chemical Thermodynamics » First Law of Thermodynamics » Heat Internal Energy

MCQ▾

Question

Heat of formation of 2 moles of NH 3 (G) is -90 KJ, bond energies of H-H and N-H bonds are 435 KJ and 390 KJ/mol. The value of the bond energy?

Choices

Choice (4) Response
a.

472.5 KJ

b.

945 KJ

c.

-945 KJ

d.

-472.5 KJ

Question number: 4

» Chemical Thermodynamics » Second Law of Thermodynamics » Standard Gibbs Energy Change

MCQ▾

Question

For the spontaneous process the Gibbs free energy change will be?

Choices

Choice (4) Response
a.

Variable

b.

Negative

c.

Zero

d. Positive

Question number: 5

» Chemical Thermodynamics » Second Law of Thermodynamics » Spontaneity of Processes

MCQ▾

Question

Which of the following is not a non spontaneous process?

Choices

Choice (4) Response
a.

Flow of heat from a cold body to hot body

b.

Flow of heat from hot body to cold body

c. Dissolution of gold or silver in water
d.

Hydrolysis of sodium chloride

Question number: 6

» Chemical Thermodynamics » First Law of Thermodynamics » Work

MCQ▾

Question

A gas expands, isothermally and irreversibly the work done by gas is?

Choices

Choice (4) Response
a.

Minimum

b.

Maximum

c.

Average

d.

Zero

Question number: 7

» Chemical Thermodynamics » First Law of Thermodynamics » Heat Capacity

MCQ▾

Question

Bomb calorimeter proceeds at constant?

Choices

Choice (4) Response
a.

Temperature

b.

Weight

c.

Volume

d.

Pressure

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