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.Management Sciences
Category: Stoichiometry
A solution with reasonably permanent pH is called a/an _______________ solution?
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A. Ideal
B. Non-ideal
C. Buffer
D. Colloidal
The density of a liquid is 1500 kg/m3. Its value in gin/litre will be equal to________________?
A. 1.5
B. 15
C. 150
D. 1500
‘Cox’ chart which is useful in the design of a distillation column (particularly suitable for petroleum hydrocarbons) is a plot of the_____________?
A. Temperature vs. log (vapor pressure)
B. Vapor pressure vs. log (temperature)
C. Log (temperature) vs. log (vapor pressure)
D. Vapor pressure vs. temperature
At 100°C, water and methylcyclohexane both have vapour pressures of 1 atm. Also at 100°C, the latent heats of vaporisation of these compounds are 40.63 kJ/mole for water and 31.55 kJ/mole for methylcyclohexane. The vapour pressure of water at 150°C is 4.69 atm. At 150°C, the vapour pressure of methylcyclohexane would be expected to be_________________?
A. Significantly less than 4.69 atm
B. Nearly equal to 4.69 atm
C. Significantly more than 4.69 atm
D. Indeterminate due to lack of data
Sometimes, in chemical processes, a part of the outlet stream is rejected as waste in order to keep the impurity level in the system within limits. This phenomenon is termed as the_________________?
A. Recycling
B. Purging
C. Bypassing
D. Recirculation
Kopp’s rule is helpful in finding the__________________?
A. Heat capacities of solids
B. Heat capacities of gases
C. Molal heat capacities of gases
D. Activation energy
Osmotic pressure of the solution can be increased by_________________?
A. Decreasing its temperature
B. Increasing the volume of the vessel containing the solution
C. Diluting the solution
D. None of these
At higher temperature, molal heat capacities of most of the gases (at constant pressure) ____________ with increase in temperature?
A. Increases
B. Decreases
C. Remains unchanged
D. Increases linearly
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