- (A) To make 100 kg of a solution containing 40% salt by mixing solution A (containing 25% salt) and solution B (containing 50% salt), the amount of solution A required is 40 kg
- (B) 1.2 gm atoms of carbon and 1.5 gm moles of oxygen are reacted to give 1 gm mole of carbon dioxide. The limiting reactant is carbon. The percent excess reactant supplied is 25
- (C) A gas bubble at a pressure of Pg is passed through a solvent with a saturation vapour pressure of Ps. If the time of passage of the bubble is long and air is insoluble in the solvent, the mole fraction of solvent in the bubble will be equal to Ps/Pg
- (D) A supersaturated solution of a sparingly soluble solute, at a concentration of C, is being fed to a crystalliser at a volumetric flow rate of V. The solubility .of the solute is C1. The output rate of solids from an efficient crystalliser is (C + C1) V
Chemical Engineering Mcqs
- (A) Ten times dilution of a normal solution (N) reduces its normality to N/10
- (B) When equal weights of oxygen and methane are mixed in an empty reactor at room temperature, then the fraction of total pressure exerted by the oxygen is 1/2
- (C) Volume occupied by 9.034 x 1023 atoms of oxygen in ozone (O3) at NTP will be 11200 c.c
- (D) One kg mole of an ideal gas at N.T.P occupies 22400 Nm3
- (A) 1 kcal/kg = 1.8 BTU/lb = 4.186 kJ/kg
- (B) 1 BTU/ft3 = 8.9 kcal/m3 = 0.038 MJ/m3
- (C) 1 BTU/lb = 2.3 kcal/kg
- (D) 1 kcal/m3 = 0.1124 BTU/ft3
- (A) ‘Reduced temperature’ of a substance is the ratio of its existing temperature to its critical temperature, both expressed on Celsius scale
- (B) ‘Reduced pressure’ is the ratio of the existing pressure of a substance to its critical pressure
- (C) ‘Reduced volume’ is the ratio of the existing molal volume of a substance to its critical molal volume
- (D) None of these
- (A) Heat capacity of a diatomic gas is higher than that of a monatomic gas
- (B) Equal volumes of Argon and Krypton contain equal number of atoms
- (C) Total number of molecules contained in 22.4 litres of hydrogen at NTP is 6.023 x 1023
- (D) The binary mixture of a particular composition in both vapor and liquid state is known as an azeotropic mixture
- (A) A vapor is termed as a saturated vapor, if its partial pressure equals its equilibrium vapor pressure
- (B) A vapor whose partial pressure is less than its equilibrium vapor pressure, is termed as a ‘superheated vapor’
- (C) The temperature at which a vapor is saturated is termed as the boiling point
- (D) The difference between the existing temperature of a vapor and its saturation temperature (i.
- (E) dew point) is called its ‘degree of superheat’
- (A) Mercury in glass thermometer (without any covering or air gap)
- (B) Bare metallic thermometer
- (C) Bare vapor pressure thermometer
- (D) All
- (A) Damped vibrator
- (B) Mercury in glass thermometer kept in boiling water
- (C) Interacting system of two tanks in series
- (D) Non-interacting system of two tanks in series
- (A) °API gravity
- (B) Specific gravity
- (C) Viscosity
- (D) Flashpoint
- (A) Alkylation produces a larger iso-paraffin (having higher octane number) from the reaction of an olefin with smaller iso-paraffin
- (B) Catalytic alkylation processes use HF, AlCl3 & H2SO4 as Catalysts
- (C) All the alkylation processes use very high temperature (> 1000°C)
- (D) Gasoline having an octane number of 90 can be produced by alkylation process
