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- Question
The heat capacity of a substance is
Options- A. greater for liquid state than for solid state.
- B. lower for liquid state than for gaseous state.
- C. higher for solid state than for liquid state.
- D. equal for solid and liquid states below melting point.
- Correct Answer
- greater for liquid state than for solid state.
- 1. The most convenient way of expressing solution concentration is in terms of
Options- A. mole fraction
- B. normality
- C. molality
- D. molarity Discuss
- 2. __________ chart is a graph related to Antonie equation.
Options- A. Ostwald
- B. Cox
- C. Mollier's
- D. Enthalpy-concentration Discuss
- 3. Degrees of freedom will be equal to the number of components for a system comprising of
Options- A. only soluble liquid components.
- B. partially miscible two liquid components system having two phases.
- C. two liquid components and one solute (soluble in both the liquids).
- D. none of these. Discuss
- 4. The molar composition of a gas is 10% H2, 10% O2, 30% CO2 and balance H2O. If 50% H2O condenses, the final mole percent of H2 in the gas on a dry basis will be
Options- A. 10%
- B. 5%
- C. 18.18%
- D. 20% Discuss
- 5. Saturated solution of benzene in water is in equilibrium with a mixture of air and vapours of benzene and water at room temperature and pressure. Mole fraction of benzene in liquid is xB and the vapour pressures of benzene and water at these conditions are pvB and pvw respectively. The partial pressure of benzene in air-vapour mixture is
Options- A. PvB
- B. xB.PvB
- C. (Patm - Pvw)xB
- D. xB.Patm Discuss
- 6. Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity? Vapour pressure of water at 20°C is 17.5 mm Hg.
Options- A. 80.38
- B. 80
- C. 79.62
- D. 78.51 Discuss
- 7. A butane isomerisation process produces 70 kmole/hr of pure isobutane. A purge stream removed continuously, contains 85% n-butane and 15% impurity (mole%). The feed stream is n-butane containing 1% impurity (mole%). The flow rate of the purge stream will be
Options- A. 3 kmole/hr
- B. 4 kmole/hr
- C. 5 kmole/hr
- D. 6 kmole/hr Discuss
- 8. Elements in a periodic table are arranged in order of their
Options- A. atomic number.
- B. mass number.
- C. atomic weight.
- D. metallic characteristics. Discuss
- 9. Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of
Options- A. mixing
- B. adsorption
- C. wetting
- D. complete wetting Discuss
- 10. The percentage ratio of the partial pressure of the vapor to the vapor pressure of the liquid at the existing temperature is
Options- A. termed as relative saturation.
- B. not a function of the composition of gas mixture.
- C. called percentage saturation.
- D. not a function of the nature of vapor. Discuss
Stoichiometry problems
Search Results
Correct Answer: molarity
Correct Answer: Cox
Correct Answer: only soluble liquid components.
Correct Answer: 20%
Correct Answer: xB.PvB
Correct Answer: 79.62
Correct Answer: 5 kmole/hr
Correct Answer: atomic number.
Correct Answer: complete wetting
Correct Answer: termed as relative saturation.
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