- (A) Water-hydrochloric acid
- (B) Acetone-carbon disulphide
- (C) Water-ethyl alcohol
- (D) n-heptane-n-octane
Exam preparation MCQs with answers
Practice Pakistan's most useful MCQs for competitive exams
Prepare for NTS, PPSC, FPSC and subject-wise tests with fresh multiple choice questions, clear options and quick answer reveal.
Latest MCQs
- (A) In towers packed with stacked packing
- (B) In towers packed randomly with crushed solids
- (C) In dumped packing of regular units
- (D) At very high liquid flow rate
- (A) Vapour pressure of component A to that of component B
- (B) Vapour pressure of component A to the total pressure
- (C) Vapour pressure of component A to the partial pressure of A
- (D) Partial pressure of component A to the total pressure
- (A) Yes
- (B) No
- (C) Yes; but height of cooling tower will be prohibitively high
- (D) Yes; but the air flow rate should be excessively high
- (A) 0.25
- (B) 2.5
- (C) 1.25
- (D) 0.0025
- (A) Condenser and reboiler loads are the same in both the cases
- (B) Reboiler load is the same in both the cases but condenser load is higher in case (ii)
- (C) Condenser load is the same in both the cases but reboiler load is higher in case (ii)
- (D) Both condenser and reboiler loads are higher in case (ii) as compared to case (i)
- (A) Wetted wall
- (B) Sieve/perforated tray
- (C) Bubble cap
- (D) Packed
- (A) 2.09 × 10-4
- (B) 2.09 × 10-5
- (C) 2.09 × 10-9
- (D) 2.09 × 10-12
- (A) Multiple effect evaporator
- (B) Mechanical draft cooling tower
- (C) Rotary dryer
- (D) Rotating disc contactor
- (A) Cold water leaving the tower and the wet bulb temperature of the surrounding air
- (B) Hot water entering the tower and the wet bulb temperature of the surrounding air
- (C) Hot water entering and the cooled water leaving the cooling tower
- (D) None of these

