Questions and answers for exam Preparation

MCQs

Total Questions : 1913 | Page 188 of 192 pages

Question 1871. The value of gas constant ‘R’ is ______________ kcal/kg.mole.°C?

2.79
1.987
3.99
None of these

Discuss Question

Answer: Option D. -> None of these
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1872. A gaseous mixture contains 14 kg of N2, 16 kg of O2 and 17 kg of NH3. The mole fraction of oxygen is__________________?

0.16
0.33
0.66
0.47

Discuss Question

Answer: Option B. -> 0.33
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1873. A gas mixture contains 6 moles of H2 and 2 moles of N2. If the total pressure of the gaseous mixture is 4 kgf/cm2; then the partial pressure of N2 in the mixture will be _____________ kgf/cm2 ?

Discuss Question

Answer: Option A. -> 1
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1874. In a neutral solution _________________?

H+ ions are absent
OH- ions are absent
Both H+ and OH- ions are present in very small but equal concentration
None of these

Discuss Question

Answer: Option C. -> Both H+ and OH- ions are present in very small but equal concentration
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1875. Number of gm moles of solute dissolved in one liter of a solution is called its____________________?

Equivalent weight
Molarity
Molality
Normality

Discuss Question

Answer: Option B. -> Molarity
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1876. Hess’s law of constant heat summation is based on conservation of mass. It deals with ___________________?

Equilibrium constant
Reaction rate
Changes in heat of reaction
None of these

Discuss Question

Answer: Option C. -> Changes in heat of reaction
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1877. Total energy at a point comprises of _____________ energy?

Potential & kinetic
Pressure
Internal
All A., B. & C.

Discuss Question

Answer: Option D. -> All A., B. & C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1878. Which of the following is not a colligative property ?

Osmotic pressure
Depression of freezing point
Lowering of vapor pressure
None of these

Discuss Question

Answer: Option D. -> None of these
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1879. Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules ____________________?