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- Question
Pick out the wrong statement.
Options- A. The evaporation of aqueous solution of glucose causes its molarity to increase.
- B. Both the freezing point as well as boiling point of sea water is more than that of distilled water.
- C. The solution containing equal masses of two liquids 'X' and 'Y' has the same mole fraction of' 'X' and 'Y'.
- D. both (b) and (c)
- Correct Answer
- both (b) and (c)
- 1. 1 torr is equivalent to
Options- A. 1 mm Hg
- B. 1 Pascal
- C. 1 ata
- D. 1 mm wc Discuss
- 2. Number of gram equivalent of solute dissolved in one litre of solution is called its
Options- A. normally
- B. molarity
- C. molality
- D. formality Discuss
- 3. Which of the following expressions defines the Baume gravity scale for liquids heavier than water?
Options- A. (141.5/G) - 131.5
- B. 145 - (145/G)
- C. 200(G-1)
- D. (400/G) - 400 Discuss
- 4. Steam reforming of naphtha produces ammonia synthesis gas. This is a/an __________ process.
Options- A. autocatalytic
- B. endothermic
- C. exothermic
- D. non-catalytic Discuss
- 5. 5-10-5 fertilisers mean that they contain
Options- A. 5, 10, 5% respectively of N2, P2O5 and K2O.
- B. only 5 to 10% active fertiliser constituents.
- C. 5 to 10% filler & carrier of soil conditioners.
- D. none of these. Discuss
- 6. The elevation in boiling point of a solution is proportional to the __________ of the solution.
Options- A. molal concentration
- B. reciprocal of the molal concentration
- C. normality
- D. molarity Discuss
- 7. In a binary liquid solution of components A and B, if component A exhibits positive deviation from Raoult's law, then component B
Options- A. exhibits positive deviation from Raoult's law.
- B. exhibits negative deviation from Raoult's law.
- C. obeys Raoult's law.
- D. may exhibit either positive or negative deviation from Raoult's law. Discuss
- 8. Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m3 . The diffusivity of aniline in air is 0.74xl0-5m2/s.The numerical value of mass transfer co-efficient is 7.4 x 10-3. The rate of evaporation of aniline is 2.97 x 10-4. Its units are
Options- A. mole/s
- B. mole/cm2. s
- C. mole/m2 . s
- D. kmole/m2 . s Discuss
- 9. Volume percent for gases is equal to the
Options- A. weight percent.
- B. mole percent.
- C. weight percent only for ideal gases.
- D. mole percent only for ideal gases. Discuss
- 10. Mass number of an atom is the sum of the numbers of
Options- A. neutrons and protons
- B. protons and electrons
- C. neutrons and electrons
- D. both(a)&(b) Discuss
Stoichiometry problems
Search Results
Correct Answer: 1 mm Hg
Correct Answer: normally
Correct Answer: 145 - (145/G)
Correct Answer: endothermic
Correct Answer: 5, 10, 5% respectively of N2, P2O5 and K2O.
Correct Answer: molal concentration
Correct Answer: exhibits positive deviation from Raoult's law.
Correct Answer: kmole/m2 . s
Correct Answer: mole percent only for ideal gases.
Correct Answer: both(a)&(b)
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