Q. Pick out the wrong statement:

View solution

Q. The value of L/mG ratio for economical absorption operation ranges from

View solution

Q. Large scale usage of flash distillation is practised in

View solution

Q. Which of the following is not a continuous leaching equipment ?

View solution

Q. __________ extractor is used for the concentration of radioactive nuclear waste.

View solution

Q. Moisture content of a substance when at equilibrium with a given partial pressure of the vapour is called the __________ moisture.

View solution

Q. All moisture in a non-hygroscopic material is the __________ moisture.

View solution

Q. Pick out the correct relationship. (where, Ri = internal reflux ratio Ro = external reflux ratio. )

View solution

Q. Separation of __________ employs gaseous diffusion process.

View solution

Q. For water-ethanol system, the minimum reflux ratio

View solution

Q. The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m²/m³)

View solution

Q. Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysterisis. In such cases, the desorption equilibrium pressure is __________ that obtained for adsorption.

View solution

Q. Experimental determination of __________ is done by wetted wall column method.

View solution

Q. Pore size of the molecular seive 5A is __________ mm.

View solution

Q. Swenson-Walker crystalliser is a __________ unit

View solution

Q. According to the Fenske equation, what will be the minimum number of plates required in a distillation column to separate an equimolar binary mixture of components A and B into an overhead fraction containing 99 mol% A and a bottom fraction containing 98 mol% B ? Assume that relative volatility (αᴀʙ = 2) does not change appreciably in the coloumn.

View solution

Q. Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in

View solution

Q. With increase in temperature, the mutual solubility of two liquids

View solution

Q. Pick out the wrong statement.

View solution

Q. The relative volatility of a binary mixture at the azeotropic composition is

View solution