Chemical Engineering Mcqs

Minimum thermal efficiency of a steam boiler may be around ____________________ percent ?

• (A)  25
• (B)  45
• (C)  65
• (D)  20

Answer

Submitted By :Ali Uppal

Corona discharge is related to the operation of a/an_______________________?

• (A)  Induction motor
• (B)  Electrostatic precipitator
• (C)  Fast breeder reactor
• (D)  Magneto hydrodynamic generator (MHD)

Answer

Submitted By :Ali Uppal

Silicon crystal can be converted to p-type semi-conductor by doping with__________________?

• (A)  Phosphorous
• (B)  Nitrogen
• (C)  Carbon
• (D)  Boron

Answer

Submitted By :Ali Uppal

Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines ?

• (A)  Air filter
• (B)  Fuel injector
• (C)  Exhaust silencer
• (D)  Battery

Answer

Submitted By :Ali Uppal

Vibration upto 100 kilo hertz can be most accurately measured by a ________________ type accelerometer ?

• (A)  Preloaded spring
• (B)  Piezoelectric
• (C)  Bonded strain gauge
• (D)  None of these

Answer

Submitted By :Ali Uppal

Brinell Hardness Number (BHN) for talc is approximately in the range of ____________________?

• (A)  1-5
• (B)  20-30
• (C)  100-150
• (D)  200-250

Answer

Submitted By :Ali Uppal

Pressure exerted by a liquid depends upon its_________________?

• (A)  Surface tension
• (B)  Density
• (C)  Viscosity
• (D)  Buoyancy

Answer

Submitted By :Ali Uppal

Drills are usually made of__________________?

• (A)  Cermets
• (B)  High speed steel
• (C)  Alloy steel
• (D)  Tungsten carbide

Answer

Submitted By :Ali Uppal

An ideal material for making cooking vessels should have___________________?

• (A)  High heat capacity
• (B)  Low heat capacity
• (C)  High thermal conductivity
• (D)  Both

Answer

Submitted By :Ali Uppal

Propulsion of rocket follows from the_________________?

• (A)  Newton’s second law of motion
• (B)  Newton’s third law of motion
• (C)  Law of projectiles
• (D)  Archimedes principle

Answer

Submitted By :Ali Uppal