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- Question
A liquid is in equilibrium with its vapor at its boiling point. On an average, the molecules in the liquid and gaseous phases have equal
Options- A. kinetic energy.
- B. intermolecular forces of attraction.
- C. potential energy.
- D. total energy.
- Correct Answer
- kinetic energy.
- 1. Raoult's law states that 'the equilibrium vapor pressure that is exerted by a component in a solution is proportional to the mole fraction of that component'. This generalisation is based on the assumption that the
Options- A. sizes of the component molecules are approximately equal.
- B. attractive forces between like and unlike molecules are approximately equal.
- C. component molecules are non-polar and no chemical combination or molecular association between unlike molecules takes place in the formation of the solution.
- D. all (a), (b) & (c). Discuss
- 2. The density of a gas at N.T.P.is '?'. Keeping the pressure constant (i.e. 760 mm Hg), the 3 density of the gas will become
at a temperature of __________ °K
Options- A. 273°
- B. 300°
- C. 400°
- D. 300° Discuss
- 3. Pick out the wrong statement.
Options- A. Ten times dilution of a normal solution (N) reduces its normality to N/10.
- B. When equal weights of oxygen and methane are mixed in an empty reactor at room temperature, then the fraction of total pressure exerted by the oxygen is 1/2.
- C. Volume occupied by 9.034 x 1023 atoms of oxygen in ozone (O3) at NTP will be 11200 c.c
- D. One kg mole of an ideal gas at N.T.P occupies 22400 Nm3. Discuss
- 4. The maximum adiabatic flame temperature of fuels in air is __________ the maximum flame temperature in pure oxygen.
Options- A. lower than
- B. higher than
- C. same as
- D. not related to Discuss
- 5. One of the specific gravity scales is "Brix" (used speicifically for sugar solution). It is defined as
Options- A. Brix = (400/G) - 400
- B. Brix = 200 (G-1)
- C. Brix = 145 - (145/G)
- D. none of these Discuss
- 6. Pick out the correct conversion.
Options- A. 1 BTU =453.6 calories
- B. 1 BTU = 252 calories
- C. 1 calorie = 252 BTU
- D. 1 calorie = 453.6 BTU Discuss
- 7. The osmotic pressure of a solution is directly proportional to the
Options- A. lowering of vapor pressure.
- B. molecular concentration of the solute.
- C. absolute temperature of a given concentration.
- D. all (a), (b) and (c). Discuss
- 8. Two solutions A1 and A2 have pH value of 2 and 6 respectively. It implies that the solution
Options- A. A2 is more alkaline than solution A2
- B. A1 is highly acidic.
- C. A1 is very slightly acidic.
- D. both (a) &(c). Discuss
- 9. The molecular velocity of a real gas is proportional to (where, T = absolute temperature of the gas).
Options- A. T
- B. T
- C. T2
- D. 1/T Discuss
- 10. In case of vapor-liquid equilibria, which of the following does not account for gas phase deviation from ideality?
Options- A. Use of equation of state
- B. Fugacity co-efficient
- C. Activity co-efficient
- D. None of these Discuss
Stoichiometry problems
Search Results
Correct Answer: all (a), (b) & (c).
Correct Answer: 400°
Correct Answer: One kg mole of an ideal gas at N.T.P occupies 22400 Nm3.
Correct Answer: lower than
Correct Answer: Brix = (400/G) - 400
Correct Answer: 1 BTU = 252 calories
Correct Answer: all (a), (b) and (c).
Correct Answer: both (a) &(c).
Correct Answer: T
Correct Answer: Activity co-efficient
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