Chemical Thermodynamics-First Law of Thermodynamics (NEET Chemistry): Questions 1 - 8 of 23

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 677 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 350.00 or

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 » 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: 3

» 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: 4

» 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

Question number: 5

» Chemical Thermodynamics » First Law of Thermodynamics » Work

MCQ▾

Question

One mole of a gas is heated at constant pressure to raise its temperature by 1°C. The work done in joules is?

Choices

Choice (4) Response

a.

19.4

b.

-16.62

c.

- 4.3

d.

- 8.314

Question number: 6

» Chemical Thermodynamics » First Law of Thermodynamics » Enthalpy

MCQ▾

Question

Determine the heat of transformation of C (diamond) → C (graphite)?

Choices

Choice (4) Response

a.

0.5 kcal

b.

-0.5 kcal

c.

5.0 kcal

d.

-5.0 kcal

Question number: 7

» Chemical Thermodynamics » First Law of Thermodynamics » Enthalpy

MCQ▾

Question

The compounds which have negative enthalpies of formation are known as

Choices

Choice (4) Response

a.

endothermic compounds

b.

allotropic compounds

c.

isothermal compounds

d.

exothermic compounds

Question number: 8

» Chemical Thermodynamics » First Law of Thermodynamics » Work

MCQ▾

Question

Calculate the maximum work done in expanding the 16g of Oxygen at 300 K and occupying a volume of 5 dm3 isothermally until the volume becomes 25 dm3.

Choices

Choice (4) Response

a.

-2.01X10 3J

b.

2.01X103J

c.

-0.20X103J

d.

0.20X103J

Sign In