NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 44 - 48 of 1259

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Question number: 44

» Chemical Thermodynamics » First Law of Thermodynamics » Enthalpy

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MCQ▾

Question

If the values of ∆H° f of ICl (g), Cl (g) and I (g) are respectively 17.57,121.34,106.96 J/mol. The value of I-Cl bond energy in J/mol is?

Choices

Choice (4)Response

a.

106.96 J/mol

b.

210.73 J/mol

c.

17.57 J/mol

d.

35.15J/mol

Question number: 45

» Chemical Thermodynamics » State Functions » Internal Energy

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MCQ▾

Question

Which one of the following statement is not correct regarding the internal energy?

Choices

Choice (4)Response

a.

The change in internal energy depends on the path by which the final stage is reached.

b.

Internal energy is an extensive property.

c.

There is no change in internal energy in a cyclic process.

d.

Internal energy is a state property

Question number: 46

» Chemical Thermodynamics » Fundamentals of Thermodynamics » Ideal Gas Equation

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MCQ▾

Question

When 1.0 mole of water at 373 k vaporizes against an atmospheric pressure of 1.0 atm and

assume ideal gas behavior and calculate the work done?

Choices

Choice (4)Response

a.

3.140cal

b.

3140.3J

c.

-3140.3J

d.

All of the above

Question number: 47

» Chemical Thermodynamics » First Law of Thermodynamics » Endothermic Reactions

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MCQ▾

Question

When ammonium chloride is dissolved in water, the solution becomes cold, the change is?

Choices

Choice (4)Response

a.

Adiabatic

b.

Endothermic

c.

Exothermic

d.

Super cooling

Question number: 48

» Chemical Thermodynamics » First Law of Thermodynamics » Heat Capacity

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MCQ▾

Question

What is the energy change of the system, if 400 calories of heat energy is absorbed to a

system and system does 250 calories of work on surroundings?

Choices

Choice (4)Response

a.

-150 cal

b.

150cal

c.

-650cal

d.

650 cal

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