- (A) Paraffins
- (B) Diolefins
- (C) Aromatics
- (D) Naphthenes
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- (A) Decreases upwards
- (B) Increases upwards
- (C) Remains same throughout
- (D) May decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell
- (A) Sieve plate
- (B) Packed
- (C) Bubble cap plate
- (D) None of these
- (A) Tubes to avoid the expansion of high pressure shell construction
- (B) Shell side for smaller total pressure drop
- (C) Shell side, if the flow is counter-current and tube side if the flow is co-current
- (D) Shell side for large overall heat transfer co-efficient
- (A) Hemispherical
- (B) Torispherical
- (C) Conical or flat plate
- (D) Elliptical
- (A) 1.3 to 2
- (B) 1.6 to 2
- (C) 2.5
- (D) 1.5 to 3
- (A) It is unsuitable for concentrating those liquids, which form a scale or deposit salt
- (B) It is suitable for process, in which the final product is a liquor instead of solid
- (C) Its usual dimensions are: tube dia = 2-3 cms; evaporator body dia = 1-4 metres and evaporator height = 2.5-4 metres
- (D) Liquor flows inside the tube, while the steam is outside submerging the tube
- (A) 1 to 5
- (B) 10 to 20
- (C) 30 to 40
- (D) 40 to 50
- (A) Depress its pour point
- (B) Dissolve wax
- (C) Precipitate wax
- (D) Remove wax
- (A) Type & size of packing
- (B) Fluid rates and fluid properties
- (C) Operating pressure and column diameter
- (D) All
