Questions and answers for exam Preparation

MCQs

Total Questions : 1913 | Page 186 of 192 pages

Question 1851. In _______________ process, ions of salts react with water to produce acidity or alkalinity ?

Hydration
Hydrolysis
Electrolysis
Dialysis

Discuss Question

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

Question 1852. For the gaseous phase reaction, N2 + O2 ⇌ 2NO, ΔH = + 80 kJ/kg. mole; the decomposition of NO is favoured by____________________?

Increasing the concentration of N2
Decrease in temperature
Increase in pressure
Decrease in pressure

Discuss Question

Answer: Option B. -> Decrease in temperature
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1853. 1 Kcal/kg. °C is equivalent to _______________ BTU/lb. °F ?

1
2.42
4.97
None of these

Discuss Question

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

Question 1854. 500 c.c. each of hydrogen at 700 mm Hg pressure and oxygen at 600 mm Hg pressure are put together in a vessel of 1 litre capacity. The final pressure of the gas mixture will be _____________ mm Hg?

Discuss Question

Answer: Option A. -> 650
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1855. A gas at 0°C was subjected to constant pressure cooling until its volume became half the original volume. The temperature of the gas at this stage will be________________?

0°C
0°K
-136.5°C
-136.5°K

Discuss Question

Answer: Option C. -> -136.5°C
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1856. A car tyre of volume 0.057 m3 is inflated to 300 kPa at 300 K. After the car is driven for 10 hours, the pressure in the tyre increases to 330 kPa. Assume air is an ideal gas and Cv for air is 21 J/mole.K. The change in the internal energy of air in the tyre in J/mole is__________________?

Discuss Question

Answer: Option B. -> 630
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1857. A fluid gas produced on burning furnace oil contains 0.15 gm mole of CO2, 0.05 gm mole of oxygen and 0.80 gm mole of N2. What is its molecular weight ?

28.6
30.0
30.6
32.6

Discuss Question

Answer: Option C. -> 30.6
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1858. Which of the following has the least (almost negligible) effect on the solubility of a solute in a solvent ?

Temperature
Nature of solute
Pressure
Nature of solvent

Discuss Question

Answer: Option C. -> Pressure
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1859. The accumulation in a steady state combustion process, burning 1 kg mole of carbon with 1 kg mole of oxygen thereby producing 1 kg mole of carbon dioxide, is _____________ kg mole?

Discuss Question

Answer: Option B. -> 0
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1860. Sodium ______________ has inverted solubility curve i.e. its solubility increases with the lowering of temperature?