Chemical Engineering Mcqs

Shaft/rotor speed is most accurately measured by a_________________?

• (A)  Frequency counter
• (B)  Tachometer
• (C)  Strobometer
• (D)  Speedometer

Answer

Submitted By :Ali Uppal

Factor of safety is the ratio of the ___________________ stress to the working stress?

• (A)  Tensile
• (B)  Compressive
• (C)  Yield
• (D)  Bearing

Answer

Submitted By :Ali Uppal

The escape velocity of a body on earth which is independent of its mass is about ______________________ km/second?

• (A)  3
• (B)  7
• (C)  11
• (D)  15

Answer

Submitted By :Ali Uppal

Magnetic permeability of iron is increased by its_____________________?

• (A)  Decarburising
• (B)  Alloying with cobalt
• (C)  Purification
• (D)  Alternate heating & cooling

Answer

Submitted By :Ali Uppal

The main reducing agent in iron blast furnace is____________________?

• (A)  Carbon dioxide
• (B)  Carbon monoxide
• (C)  Oxygen
• (D)  Air

Answer

Submitted By :Ali Uppal

Broaching tools are usually made of____________________?

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

Answer

Submitted By :Ali Uppal

Temper brittleness of a material can be fairly detected by the ________________ test ?

• (A)  Fatigue
• (B)  Notched bar impact
• (C)  Tensile
• (D)  Hardness

Answer

Submitted By :Ali Uppal

There are one octahedral void and ______________ tetrahedral void in the closest packing of atoms ?

• (A)  One
• (B)  Two
• (C)  Three
• (D)  None of these

Answer

Submitted By :Ali Uppal

Which of the following is the most suitable material of construction for the condenser tubes, where the cooling medium is brine (salty water) ?

• (A)  Aluminium
• (B)  Copper
• (C)  Titanium
• (D)  Stainless steel

Answer

Submitted By :Ali Uppal

Addition of small amount of ________________ to grey cast iron is done to produce nodular grey cast iron ?

• (A)  Manganese
• (B)  Phosphorous
• (C)  Magnesium
• (D)  Chromium

Answer

Submitted By :Ali Uppal