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- Question
Colligative properties of a dilute solution are those which depend entirely upon the
Options- A. constitution of the solute.
- B. chemical composition of the solute.
- C. number of solute molecules contained in a given volume of the solvent.
- D. none of these.
- Correct Answer
- constitution of the solute.
- 1. Measurement of the amount of dry gas collected over water from volume of moist gas is based on the
Options- A. Charle's law.
- B. Dalton's law of partial pressures.
- C. Avogadro's hypothesis.
- D. Boyle's law. Discuss
- 2. A solution with reasonably permanent pH is called a/an __________ solution.
Options- A. ideal
- B. non-ideal
- C. buffer
- D. colloidal Discuss
- 3. Weight of 56 litres of ammonia at N.T.P. is __________ gm.
Options- A. 2.5
- B. 42.5
- C. 56
- D. 2800 Discuss
- 4. Heat of transition is the heat evolved or absorbed, when a substance is converted from
Options- A. vapor to liquid.
- B. vapor to solid.
- C. solid to liquid.
- D. one allotropic form to another allotropic form. Discuss
- 5. An equation for calculating vapour pressure is given by, log10 P = A - B(t + c). This is called the
Options- A. Kistyakowsky equation
- B. Antonic equation
- C. Kopp's rule
- D. Trouton's rule Discuss
- 6. Which of the following gravity scales is used exclusively for liquids heavier than water?
Options- A. Baumme scale
- B. Twaddel scale
- C. API scale
- D. none of these Discuss
- 7. Dissolving a solute in a solvent does not change its
Options- A. specific heat
- B. vapour pressure
- C. viscosity
- D. none of these Discuss
- 8. The crystallisation of a solute from a solution may be done by
Options- A. removal of pure solvent by evaporation.
- B. change of temperature thereby causing supersaturation.
- C. changing the nature of the system by the addition of a more soluble material.
- D. all (a), (b) &(c). Discuss
- 9. A gas at 0°C is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be
Options- A. -136.5°C
- B. - 136.5°K
- C. -273°C
- D. 0°K Discuss
- 10. Pick out the wrong statement.
Options- A. Atomic heat capacities of the crystalline solid elements are nearly constant and equal to 6.2 kcal/kg-atom according to the law of Petit and Dulong.
- B. Atomic heat capacities of all solid elements decrease greatly with decrease in temperature, approaching a value of zero at absolute zero temperature, when in the crystalline state.
- C. Generally, the heat capacities of compounds are lower in the liquid than in the solid state.
- D. The heat capacity of a heterogeneous mixture is an additive property, but when solutions are formed, this additive property may no longer exist. Discuss
Stoichiometry problems
Search Results
Correct Answer: Dalton's law of partial pressures.
Correct Answer: buffer
Correct Answer: 42.5
Correct Answer: one allotropic form to another allotropic form.
Correct Answer: Antonic equation
Correct Answer: Twaddel scale
Correct Answer: none of these
Correct Answer: all (a), (b) &(c).
Correct Answer: -136.5°C
Correct Answer: Generally, the heat capacities of compounds are lower in the liquid than in the solid state.
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