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- Question
The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation
Options- A. increases with pressure rise.
- B. decreases with increasing pressure.
- C. becomes zero at the critical point.
- D. both (b) & (c).
- Correct Answer
- both (b) & (c).
- 1. For an ideal solution, the total vapor pressure varies __________ with the composition(expressed as mole fraction).
Options- A. inversely
- B. exponentially
- C. linearly
- D. negligibly Discuss
- 2. Kinetic theory of gases stipulates that, the
Options- A. energy is lost during molecular collisions.
- B. molecules possess appreciable volume.
- C. absolute temperature is a measure of the kinetic energy of molecules.
- D. none of these. Discuss
- 3. In physical adsorption, as compared to chemisorption, the
Options- A. quantity adsorbed per unit mass is higher.
- B. rate of adsorption is controlled by the resistance to surface reaction.
- C. activation energy is very high.
- D. heat of adsorption is very large. Discuss
- 4. Validity of the relationship, inputs = outputs, holds good for the system at steady state
Options- A. with chemical reaction.
- B. without chemical reaction.
- C. without chemical reaction & losses.
- D. none of these. Discuss
- 5. A bypass stream in a chemical process is useful, because it
Options- A. facilitates better control of the process.
- B. improves the conversion.
- C. increases the yield of products.
- D. none of these. Discuss
- 6. Solutions having the same osmotic pressure are called __________ solutions.
Options- A. dilute
- B. ideal
- C. isotonic
- D. saturated Discuss
- 7. 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
- 8. 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
- 9. Weight of 56 litres of ammonia at N.T.P. is __________ gm.
Options- A. 2.5
- B. 42.5
- C. 56
- D. 2800 Discuss
- 10. A solution with reasonably permanent pH is called a/an __________ solution.
Options- A. ideal
- B. non-ideal
- C. buffer
- D. colloidal Discuss
Stoichiometry problems
Search Results
Correct Answer: linearly
Correct Answer: absolute temperature is a measure of the kinetic energy of molecules.
Correct Answer: quantity adsorbed per unit mass is higher.
Correct Answer: without chemical reaction & losses.
Correct Answer: facilitates better control of the process.
Correct Answer: isotonic
Correct Answer: Antonic equation
Correct Answer: one allotropic form to another allotropic form.
Correct Answer: 42.5
Correct Answer: buffer
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