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- Question
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
- Correct Answer
- complete wetting
- 1. 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
- 2. 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
- 3. 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
- 4. 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. Discuss
- 5. The most convenient way of expressing solution concentration is in terms of
Options- A. mole fraction
- B. normality
- C. molality
- D. molarity Discuss
- 6. 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
- 7. Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules
Options- A. do not lose energy on collision.
- B. are above the inversion temperature.
- C. do not exert attractive force on each other.
- D. do work equal to loss in kinetic energy. Discuss
- 8. On mixing 56 gm of CaO with 63 gm of HNO3, the amount of Ca(NO3)2 formed is __________ gm.
Options- A. 82
- B. 164
- C. 41
- D. 8.2 Discuss
- 9. The heat capacity of most substances is greater for the __________ state.
Options- A. solid
- B. liquid
- C. gaseous
- D. none of these Discuss
- 10. The viscosity of water at room temperature may be around one
Options- A. centipoise
- B. poise
- C. stoke
- D. both (b) &(c) Discuss
Stoichiometry problems
Search Results
Correct Answer: atomic number.
Correct Answer: 5 kmole/hr
Correct Answer: 79.62
Correct Answer: greater for liquid state than for solid state.
Correct Answer: molarity
Correct Answer: termed as relative saturation.
Correct Answer: do not exert attractive force on each other.
Correct Answer: 82
Correct Answer: liquid
Correct Answer: centipoise
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