46
92
-23
-92
✅ The correct answer is option B.
Statiometery MCQs
1 torr is equivalent to
1 mm Hg
1 Pascal
1 ata
1 mm wc
✅ The correct answer is option A.
Boiling point of a non-homogeneous mixture of immiscible liquids is __________ that of any one of its separate components.
Lower than
Higher than
Equal to
Either A or B; depends on the liquids
✅ The correct answer is option A.
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
380
630
760
880
✅ The correct answer is option B.
Pick out the wrong unit conversion of thermal conductivity.
1 BTU/ft².hr.°F/ft = 1.488 kcal/m². hr.°C/m
1 BTU/ft².hr.°F/inch = 1.488 kcal/m². hr.°C/m
1 kcal/m.hr.°C = 0.672 BTU/ft.hr.°F = 1.163 W/m. °K
1 W/cm.°C = 85.985 kcal/m.hr.°C = 57.779 BTU/ft.hr.°F
✅ The correct answer is option B.
Which of the following expressions defines the Baume gravity scale for liquids heavier than water?
(141.5/G) – 131.5
145 – (145/G)
200(G-1)
(400/G) – 400
✅ The correct answer is option B.
The effect of pressure on the heat capacity of the gases __________ is negligible.
At pressure below one atmosphere
Below the critical temperature
Both A & B
Neither A nor B
✅ The correct answer is option C.
In __________ process, ions of salts react with water to produce acidity or alkalinity.
Hydration
Hydrolysis
Electrolysis
Dialysis
✅ The correct answer is option B.
The heats of vaporisation of CS₂, C₂H₅OH &H₂O are 26.8, 38.6 & 40.6 KJ/kg mole respectively. The order of decreasing inter-molecular forces in these liquids is
H₂O > C₂H₅OH > CS₂
CS₂ > C₂H₅OH > H₂O
H₂O > CS₂ > C₂H₅OH
CS₂ > H₂O > C₂H₅OH
✅ The correct answer is option A.
Osmotic pressure exerted by a solution prepared by dissolving one gram mole of a solute in 22.4 litres of a solvent at 0°C will be __________ atmosphere.
0.5
1
1.5
2
✅ The correct answer is option B.