Stoichiometry problems
- 1. Under conditions of equal reduced pressure and equal reduced temperature, substances are said to be in the 'corresponding states'. At equal reduced conditions i.e., at the corresponding state, the __________ of different gases are nearly the same.
Options- A. compressibility
- B. molecular weight
- C. humidity
- D. none of these Discuss
Correct Answer: compressibility
- 2. Kinematic viscosity of 1 m2 /second is equivalent to __________ stokes.
Options- A. 10
- B. 102
- C. 103
- D. 104 Discuss
Correct Answer: 104
- 3. Boiling point of a solution as compared to that of the corresponding solvent is
Options- A. less
- B. more
- C. same
- D. either more or less; depends upon the solvent Discuss
Correct Answer: more
- 4. Avogadro number is the number of molecules in one __________ of a gas.
Options- A. gram
- B. kilogram
- C. gm.mole
- D. litre Discuss
Correct Answer: gm.mole
- 5. In osmosis through a semi-permeable membrane, diffusion of the
Options- A. solvent is from low concentration to high concentration region.
- B. solvent is from high concentration to low concentration region.
- C. solute takes place.
- D. none of these. Discuss
Correct Answer: solvent is from low concentration to high concentration region.
- 6. One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH4 + 2O2 ? CO2 + 2H2O. Both the reactants and products are in gas phase. ?H°298 = - 730 kJ/mole of methane. Mole fraction of water vapour in the product gases is about
Options- A. 0.19
- B. 0.33
- C. 0.40
- D. 0.67 Discuss
Correct Answer: 0.19
- 7. Roult's law is obeyed by a __________ solution.
Options- A. saturated
- B. molar
- C. normal
- D. none of these Discuss
Correct Answer: none of these
- 8. Viscosity of atmospheric air may be about __________ centipoise.
Options- A. 0.015
- B. 1.5
- C. 15
- D. 150 Discuss
Correct Answer: 0.015
- 9. Atomic __________ of an element is a whole number.
Options- A. weight
- B. number
- C. volume
- D. radius Discuss
Correct Answer: number
- 10. Pick out the wrong unit conversion.
Options- A. 1 J = 1 W.Second = 107 ergs = 9.5 x 10-4 BTU = 0.2389 calorie
- B. 1 Watt = 746 hp
- C. -
- D. - Discuss
Correct Answer: 1 Watt = 746 hp
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