For storing hazardous chemicals in large storage tanks, the minimum safe distance between the two tanks should range between __________ times the tank diameter.

1.2 to 3.8 cms is the value of the

A binary liquid azeotropic mixture has boiling point higher than either of the components, when it shows __________ deviation from Raoult's Law.

High pressure fluid in a shell and tube heat exchanger should preferably be routed through the

The retention time of material in a rotary dryer depends upon its

In a multiple effect evaporator system having 'n' effects, the amount of water evaporated per unit surface area in approximately equal to __________ times that in a single effect.

In a shell and tube heat exchanger, the clearance of the tube is generally

Hole diameter of the seive trays in the distillation column ranges from __________ mm.

Pick out the correct statement.

An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

A perforated plate has holes of diameter d_n arranged in a pitch p_h. Each hole has a tube of I.D. d_t passing through it. The ligament efficiency is given by

Steam is preferred to be used as a heating medium in heat exchangers, because of its

The minimum shell thickness for tank ≤metres diameter is limited to __________ mm, for reasons of elastic stability.

Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is aboutpoise. However, the baffle may be completely eliminated for mixing liquids having viscoisty above __________ poise.

Which of the following factors determine the amount of entrainment in a distillation column ?

The testing pressure of storage tanks and pressure vessels designed as per Indian standard codes should be about __________ times.the design pressure.

Bubble cap tray is the most commonly used tray in large distillation column, because

In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.

Pick out the wrong statement

Diameter of the seive tray column is determined by the

Factor of safety (i.e., overdesign factor) in heat transfer equipments is about __________ percent more than the actual/theoretical design factor.

"A claming section" before the liquid flows into the downcomer is privided to

In the design of a bag filter, the gas temperature is an important consideration, as it affects the

__________ is the determining factor for the number of bubble caps to be used per tray.

Hazards associated with the relief valve leakage for extremely hazardous material storage can be taken care of by providing

__________ shapedroof is the most commonly used roof for cylinderical storage tanks.

A pressure vessel is said to be made of 'thick' shell, if the ratio of its diameter to wall thickness is

If 'D' is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of

In case of design of a shell and tube heat exchanger,

Ratio of tube length to shell diameter for a shell and tube heat exchanger is

The absorption factor is defined as (where, S₁ = slope of the equilibrium curve, S₂ = slope of the operating line)

Rotary driers are most economically designed for the number of heat transfer units (HTU) from

The units of Young's modulus of elasticity and __________ are the same.

With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, F_T

In common bubble cap distillation column design practice, riser area is approximately equal to (where, A_a = Annular passage area, and S_a = Slot area)

Pick out the wrong statement about distillation operation

Minimum baffle spacing recommended in a shell and tube heat exchanger is equal to

What is the slope of the operating line in the stripping section of a distillation column ?

Pick out the wrong statement pertaining to 'Horton sphere' used for the storage of liquid ammonia.

Rate of filtrate delivery is inversely proportional to the

Brass valves are usually made for pipe sizes __________ inches.

In a cylinderical vessel subjected to internal pressure, the longitudinal stress σ_L and the circumferential stress, σ_n are related by

The dust collection efficiency of a cyclone separator

In shell and tube heat exchangers, straight tie rods are used to

The ratio of down take area to cross-sectional area of the tube, for calendria type evaporator ranges from

The difficulty of liquid distribution in packed towers is accentuated, when the ratio of tower diameter to packing diameter is

In the design of a shell and tube heat exchanger, the corrosion allowance

The normal range of velocity of steam in pipes is __________ m/sec.

For annular flow of a fluid, the ratio of the equivalent diameter for pressure drop calculation to the equivalent diameter for heat transfer calculation is

Heat transfer co-efficient, h_G(K_cal/hr.m² .°C) and mass velocity of air, G (kg/hr.m² ) for air flow parallel to the surface in case of constant drying rate in batch drying is related as h_G = 0.0176G^0.8. But when the flow of air perpendicular to the surface is encountered, this equation changes to