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- Question
A vapor whose partial pressure is less than its equilibrium vapor pressure is called a __________ vapor.
Options- A. saturated
- B. supersaturated
- C. superheated
- D. none of these
- Correct Answer
- superheated
- 1. Boiling point of a non-homogeneous mixture of immiscible liquids is __________ that of any one of its separate components.
Options- A. lower than
- B. higher than
- C. equal to
- D. either (a) or (b); depends on the liquids Discuss
- 2. In the reaction, represented by Na2CO3 + HC1 ? NaHO3 + NaCl, the equivalent weight of Na2CO3 is
Options- A. 53
- B. 5.3
- C. 106
- D. 10.6 Discuss
- 3. The OH- concentration in a solution having pH value 3 is
Options- A. 10-3
- B. 10-10
- C. 10-11
- D. 10-13 Discuss
- 4. For water evaporating into usaturated air under adiabatic conditions and at constant pressure, the __________ remains constant throughout the period of vaporisation.
Options- A. dry bulb temperature
- B. wet bulb temperature
- C. humidity
- D. relative saturation Discuss
- 5. At a constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with rise of temperature due to
Options- A. decrease in mean free path.
- B. increased collision rate among molecules.
- C. increase in molecular attraction.
- D. increase in average molecular speed. Discuss
- 6. 'Cox' chart which is useful in the design of a distillation column (particularly suitable for petroleum hydrocarbons) is a plot of the
Options- A. temperature vs. log (vapor pressure).
- B. vapor pressure vs. log (temperature).
- C. log (temperature) vs. log (vapor pressure).
- D. vapor pressure vs. temperature. Discuss
- 7. If 1.5 moles of oxygen combines with aluminium to form Al2O3, then the weight of aluminium (atomic weight = 27 ) used in this reaction is __________ gm.
Options- A. 27
- B. 54
- C. 5.4
- D. 2.7 Discuss
- 8. One of the specific gravity scales is "Brix" (used speicifically for sugar solution). It is defined as
Options- A. Brix = (400/G) - 400
- B. Brix = 200 (G-1)
- C. Brix = 145 - (145/G)
- D. none of these Discuss
- 9. The maximum adiabatic flame temperature of fuels in air is __________ the maximum flame temperature in pure oxygen.
Options- A. lower than
- B. higher than
- C. same as
- D. not related to Discuss
- 10. 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
Stoichiometry problems
Search Results
Correct Answer: lower than
Correct Answer: 106
Correct Answer: 10-11
Correct Answer: wet bulb temperature
Correct Answer: increase in molecular attraction.
Correct Answer: temperature vs. log (vapor pressure).
Correct Answer: 54
Correct Answer: Brix = (400/G) - 400
Correct Answer: lower than
Correct Answer: One kg mole of an ideal gas at N.T.P occupies 22400 Nm3.
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