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- Question
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).
- Correct Answer
- all (a), (b) and (c).
- 1. 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
- 2. 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. Discuss
- 3. 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
- 4. 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
- 5. 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
- 6. 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
- 7. 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
- 8. 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
- 9. Which of the following is followed by an ideal solution?
Options- A. Boyle's law
- B. Amgat's law
- C. Raoult's law
- D. Trouton's rule Discuss
- 10. The vapor pressure of the solvent decreased by 10 mm Hg, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in vapor pressure of the solvent is required to be 20 mm Hg.?
Options- A. 0.2
- B. 0.1
- C. 0.4
- D. 0.6 Discuss
Stoichiometry problems
Search Results
Correct Answer: 1 BTU = 252 calories
Correct Answer: kinetic energy.
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: both (a) &(c).
Correct Answer: T
Correct Answer: Activity co-efficient
Correct Answer: Raoult's law
Correct Answer: 0.6
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