A. Hydrochloric acid
B. Nitric acid
C. Alkalis
D. Sulphuric acid
Related Mcqs:
- Diameter to height ratio for a raschig ring is_____________________?
A. 1
B. 0.5
C. 2
D. 8 - Diameter of raschig rings used in packed tower in industry is normally around _____________________ inches?
A. 2
B. 8
C. 12
D. 18 - Use of raschig rings in place of crushed stones as packing in packed beds (other things being same) ?
A. Increases pressure drop, increases surface area
B. Increases pressure drop, decreases surface area
C. Decreases pressure drop, increases surface area
D. Decreases pressure drop, decreases surface area - The cooling effect in a cooling tower cannot be increased by_____________________?
A. Increasing the air velocity over the wet surfaces
B. Reducing the humidity of entering air
C. Lowering the barometric pressure
D. None of these - Rotary dryers cannot handle _______________ materials ?
A. Free flowing
B. Dry
C. Sticky
D. Granular - Separation of two or more components of a liquid solution cannot be achieved by___________________?
A. Fractional crystallisation
B. Liquid extraction
C. Absorption
D. Evaporation - Berl saddle made of carbon cannot be used for ___________________?
A. Alkalis
B. SO2
C. H2SO4
D. Oxidising atmosphere - 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 (αAB = 2) does not change appreciably in the column ?
A. 5
B. 9
C. 12
D. 28 - A slurry is to be dried to produce flaky solid. Which dryer would you recommend ?
A. Spray dryer
B. Drum dryer
C. Rotary dryer
D. Dielectric dryer - Operating velocity in a packed tower is usually __________________ the flooding velocity ?
A. Half
B. Twice
C. Equal to
D. More than
