MCQ: Refractory bricks having lower porosity have _____________________?

1. High insulating properties
2. Low heat capacity
3. Low thermal conductivity
4. Greater strength

MCQ: A butane isomerisation process produces 70 k.mole/hr of pure iso-butane. 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_________________?

1. 3 kmole/hr
2. 4 kmole/hr
3. 5 kmole/hr
4. 6 kmole/hr

MCQ: The molecules of a liquid which is in equilibrium with its vapor at its boiling point on an average have equal _____________ in the two phases?

1. Potential energy
2. Intermolecular forces
3. Kinetic energy
4. Total energy

MCQ: Na2SO4. 10H2O crystals are formed by cooling 100 Kg of 30% by weight aqueous solution of Na2SO4. The final concentration of the solute in the solution is 10%. The weight of crystals is________________?

1. 20
2. 32.2
3. 45.35
4. 58.65

MCQ: At a temperature of 0°K, the molecules of a gas have only _______________ energy?

1. Rotational
2. Vibrational
3. Translational
4. None of these

MCQ: On mixing 56 gm of CaO with 63 gm of HNO3, the amount of Ca(NO3)2 formed is ______________ gm?

1. 82
2. 164
3. 41
4. 8.2