B. 3 to 5

C. 6 to 12

D. 2 to 3

A. More

B. Same

C. More or less depending upon the pressure & temperature inside the vessel and the nature of

E. fluid contained therein

A. Less

B. Same

D. Either A. or B.

B. mally used

C. Tube dia of 2.5-7.5 cms, tube length of 75-200 cms and cylindrical drum dia of 1-6 metres are

D. rounding tube

E. Liquor is inside the tube while the steam is outside the tube

F. Area of central downtake is equal to 40 to 100% of total cross-sectional area of the

A. 3 to 4

B. > 5

C. 4 to 5

B. 8 to 15

C. 5 to 7

D. 3 to 8

B. Yellow

C. Brown

D. Red

B. 75

C. 30

D. 45

B. Modular ratio

C. Strain

D. None of these

A. 0.1-0.5

B. 15-30

D. Oct-50

A. Higher structural strength

B. Lowest surface area requirement for a given volume

D. None of these

A. idue build up

B. Generally, a skirt clearance of 0.5? to 1.5? is recommended to prevent plugging of the slots by

C. The purpose of the slot is to disperse the gas into the liquid in the form of small bubbles

D. If sufficient slot area is not provided, the gas may pass through the skirt clearance

A. Increases

B. None of these

C. Remain unaffected

B. 8 mm

C. 6 mm

D. 5 mm

A. 150

B. 50

C. 25

A. Modulus of elasticity

B. Bulk modulus

C. Modulus of rigidity

A. None of these

B. Axis of the load

D. Perpendicular to the axis of the load

A. SO2

C. None of these

D. CO2

B. 0.1-0.2

C. 1.2-1.5

D. 0.2-0.5

A. 6

C. 12

D. 36

A. Low viscosity liquids (< 200 poise)

B. None of these

C. Large diameter tanks

A. Welded

C. Screwed

D. Brazed

A. Flat plate

B. Torispherical

D. Hemispherical

A. Large plate spacing

B. Low gas velocity

C. Large reflux ratio

A. Practical limit reached, due to low heat transfer rate because of inadequate temperature

B. ference

C. Economic limit reached, when the plant cost exceeds the saving of steam

E. Neither A. nor B.

A. All A., B. and C.

C. Guard against foaming & entrainment by dumping antifoaming agent through it

D. Keep a check on the liquid gradient over the plate by direct visual observation

A. Shortest distance between two adjacent tube holes

B. O.D. of the tube for square pitch

C. None of these

A. Clearance

B. Pitch

C. Baffle spacing

B. 60

C. 95

D. 45

A. 10

B. 15

C. 2

A. Independent of the type of

C. Segmental

D. Disk and ring

A. 5?

B. 2?-3.5?

D. Half the tray spacing

A. Filtering area & the pressure difference driving force

B. Viscosity of filtrate

C. Cake & filter medium resistance

A. Velocity of process fluid containing suspended solids

B. Suspended solids in the fluid

C. Characteristic of process fluid

A. Changes in temperature

C. Both A. and B.

D. Neither A. nor B.

B. pD/3t

C. pD/2t

D. pD/6t

B. Strength of the vessel is same irrespective of the diameter

C. Larger dia vessel

D. Larger dia long vessel

B. McCabe-Thieles method

C. None of these

D. Ponchon-Savarit method

A. Length of straight rectangular weir on cross-flow tray

B. Static submergence

D. Number of theoretical plates

A. None of these

C. Flooding limit of the column

D. Maximum permissible vapour velocity

B. Size, shape, orientation and surface of the packing particles

C. Density and viscosity of fluids

D. Fluid flow rates

A. Increases

B. Remain unaffected

C. May increase or decrease depending upon whether the fluid is Newtonian or non-Newtonian

A. 0.5 to 1.5

B. 10 to 15

C. 5 to 10

A. Back trapping

B. Gas blowing beneath cap skit

D. Maldistribution of gas

A. Greater cost for the reboiler heat supply

B. Greater cost for the condenser coolant

C. Lower fixed charges for the column

A. Dikes

B. None of these

D. Surge chamber

B. 0.02 to 0.05 d

C. 0.2 to 0.5 d

D. 0.5 to 0.6 d

B. A riveted joint made in overlapping plates is called butt joint

C. Hole size drilled in riveted plates is less than the actual size of the rivet

D. None of these

A. 0.1-0.5

B. 20-Oct

D. 5-Jan

A. 200

B. 10

C. 50