Chemical Engineering Mcqs

Lap joints are preferred for plates having thickness _______________ mm?

• (A)  < 12.5
• (B)  > 3
• (C)  > 5
• (D)  5-10

Answer

Submitted By :Ali Uppal

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

• (A)  Rupture diaphragm
• (B)  Dikes
• (C)  Surge chamber
• (D)  None of these

Answer

Submitted By :Ali Uppal

Compensation against openings in process vessels for giving inlet and outlet connections, for providing sight glasses and manholes etc. is provided for strength and rigidity. The most efficient type of compensation is of _______________ type?

• (A)  Nozzle or rim
• (B)  Flared out
• (C)  Fluid in
• (D)  Ring plate

Answer

Submitted By :Ali Uppal

The wall thickness for a large high pressure pipeline is determined by the consideration of the____________________?

• (A)  Axial tensile stress in the pipe
• (B)  Forces exerted by static and dynamic action at bends
• (C)  Circumferential pipe-wall tension
• (D)  Temperature stresses

Answer

Submitted By :Ali Uppal

The normal range of velocity of steam in pipes is _________________________ m/sec?

• (A)  0.1-0.5
• (B)  1-5
• (C)  10-20
• (D)  80-100

Answer

Submitted By :Ali Uppal

Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than ______________ mm?

• (A)  10
• (B)  20
• (C)  30
• (D)  5

Answer

Submitted By :Ali Uppal

Longitudinal stress induced in a thin walled cylindrical storage vessel is __________________?

• (A)  pD/2t
• (B)  pD/4t
• (C)  pD/3t
• (D)  pD/6t

Answer

Submitted By :Ali Uppal

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

• (A)  Gas density
• (B)  Gas viscosity
• (C)  Fibre selection
• (D)  All

Answer

Submitted By :Ali Uppal

With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the ______________________ decreases?

• (A)  Fixed charges initially
• (B)  Running cost of cooling water for condenser
• (C)  Vapour & liquid load both
• (D)  Running cost of steam for reboiler

Answer

Submitted By :Ali Uppal

In a distillation column, the minimum residence time for liquid in the downspout is about ______________ seconds?

• (A)  1
• (B)  8
• (C)  80
• (D)  180

Answer

Submitted By :Ali Uppal