๐ญChemical Engineering MCQs
Chemical Engineering MCQs
496 MCQs441
For most salts, the solubility increases with rise in temperature, but the solubility of _______________ is nearly independent of temperature rise?
ASodium chloride
BSodium carbonate monohydrate
CAnhydrous sodium sulphate
DHypo
442
The chemical nature of an element is independent of_______________________?
AIts atomic number
BThe number of protons or electrons present in it
CThe number of neutrons present in it
DNone of these
443
In general, the specific heats of aqueous solutions _____________ with increase in the concentration of the solute?
AIncrease
BDecrease
CRemain unchanged
DNone of these
444
Sodium ______________ has inverted solubility curve i.e. its solubility increases with the lowering of temperature?
ACarbonate (monohydrate)
BChloride
CThiosulphate
DBisulphite
445
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__________________?
A380
B630
C760
D880
446
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?
A650
B700
C600
D375
447
A gas at 0ยฐC was subjected to constant pressure cooling until its volume became half the original volume. The temperature of the gas at this stage will be________________?
A0ยฐC
B0ยฐK
C-136.5ยฐC
D-136.5ยฐK
448
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 ?
A28.6
B30.0
C30.6
D32.6
449
1 Kcal/kg. ยฐC is equivalent to _______________ BTU/lb. ยฐF ?
A1
B2.42
C4.97
DNone of these
450
For the gaseous phase reaction, N2 + O2 โ 2NO, ฮH = + 80 kJ/kg. mole; the decomposition of NO is favoured by____________________?
AIncreasing the concentration of N2
BDecrease in temperature
CIncrease in pressure
DDecrease in pressure