191. In the reaction, represented by Na₂CO₃ + HC₁ → NaHO₃ + NaCl, the equivalent weight of Na₂CO₃ is
53
5.3
106
10.6
✅ The correct answer is option C.
Statiometery MCQs
192. The chemical nature of an element is independent of
Its atomic number
The number of protons or electrons present in it
The number of neutrons present in it
None of these
✅ The correct answer is option C.
193. 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
3 kmole/hr
4 kmole/hr
5 kmole/hr
6 kmole/hr
✅ The correct answer is option C.
194. 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.
Compressibility
Molecular weight
Humidity
None of these
✅ The correct answer is option A.
195. Real gases approach ideal behaviour at
High pressure & high temperature
Low pressure & high temperature
High pressure & low temperature
Low pressure & low temperature
✅ The correct answer is option B.
196. Kopp’s rule is useful for the determination of
Molal heat capacities of gases
Heat capacities of solids
Activation energy
Heat capacities of gases
✅ The correct answer is option B.
197. Heat capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 x10⁻³ T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to – 100°C is
10.73 kJ
16.15 kJ
18.11 kJ
18.33 kJ
✅ The correct answer is option C.
198. Othmer chart is useful in estimating the heat of
Mixing
Wetting
Adsorption
None of these
✅ The correct answer is option C.
199. Kinematic viscosity of 1 m² /second is equivalent to __________ stokes.
10
102
103
104
✅ The correct answer is option D.
200. For a reacation, X → Y, if the concentration of ‘X’ is tripled; the rate becomes nine times. The order of reaction is
0
1
2
3
✅ The correct answer is option C.