Question: 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

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

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

Question: 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

Question: 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

Question: 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 wil

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

Question: Pick out the wrong conversion formula for the conversion of weight units ?

• 1. 1 tonne = 1000 kg = 22.046 lbs
• 2. 1 U.S. ton = 907 kg = 0.907 tonne = 0.893 ton
• 3. 1 ton = 2240 lbs = 1016 kg = 1.016 tonnes = 1.12 U.S. tons
• 4. None of these

Question: Pick out the wrong statement?

• 1. The effect of pressure on heat capacity of gases at pressure above one atmosphere and abovethe critical temperature is negligible
• 2. The value of Cp of gases increases with increase in pressure, above atmospheric pressure
• 3. The value of Cp at critical temperature and pressure reaches infinity
• 4. All A, B, and C

Question: Pick out the wrong unit conversion ?

• 1. 1 kgf= 9.8 Newton
• 2. 1 stoke = 1 m2/second
• 3. 1 Pascal second = 10 poise
• 4. 1 ppm = 1 ml/m3 = 1 mg/kg

Question: Pick out the correct statement ?

• 1. Heat of solution is always positive
• 2. At equilibrium, ΔG is zero
• 3. For the reaction, PCl5 ⇌ PCl3 + Cl2, ΔG is less than ΔE
• 4. The heating of water in a beaker is an example of an isolated system

Question: Pick out the wrong unit conversion ?

• 1. 1 Joule = 4.186 calorie
• 2. 1 kcal = 3.968 BTU = 0.00116 kWh = 0.00156 hp
• 3. 1 ton of TNT (tri-nitro-toluene) = 4.2 GJ (1G = 109)
• 4. 1 ft.lbf= 0.3238 calorie = 0.1383 kg.m = 1.356 J = 1.356 N.m