A. 350
B. 485
C. 140
D. 345
Related Mcqs:
- Equal masses of CH4 and H2 are mixed in an empty container. The partial pressure of hydrogen in this container expressed as the fraction of total pressure is___________________?
A. 1/9
B. 8/9
C. 1/2
D. 5/9 - A vessel of volume 1000 m3 contains air which is saturated with water vapour. The total pressure and temperature are 100 kPa and 20°C respectively. Assuming that the vapour pressure of water at 20°C is 2.34 kPa, the amount of water vapour (in kg) in the vessel is approximately ?
A. 17
B. 20
C. 25
D. 34 - N2 content in a urea sample was found to be only 42%. What is the actual urea content of the sample? (Molecular weight of urea = 60) ?
A. 80%
B. 90%
C. 95%
D. 98% - What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20) ?
A. AB3
B. A2B3
C. A2B
D. AB2 - In _______________ process, ions of salts react with water to produce acidity or alkalinity ?
A. Hydration
B. Hydrolysis
C. Electrolysis
D. Dialysis - Concentration of a solution expressed in terms of _______________ is independent of temperature?
A. Molarity
B. Normality
C. Molality
D. None of these - Atoms of the same element, but of different masses are called__________________?
A. Isobars
B. Isotones
C. Isotopes
D. None of these - pH value of a solution containing equal concentration of hydroxyl and hydrogen ions will be_________________?
A. 0
B. 10
C. 7
D. 14 - In the reaction, Ca + 2H2O = Ca(OH)2 + H2; what volume (c.c.) of hydrogen at STP would be liberated, when 8 gm of calcium reacts with excess water ? (Atomic weight of calcium = 40) ?
A. 4480
B. 2240
C. 1120
D. 0.4 - The vapor pressures of benzene and toluene are 3 and 4/3 atmospheres respectively. A liquid feed of 0.4 moles of benzene and 0.6 moles of toluene is vaporised. Assuming that the products are in equilibrium, the vapor phase mole fraction of benzene is_________________?
A. 0.4
B. 0.6
C. 0.8
D. 0.2
