Chemical Engineering Mcqs

Dephosphorization of molten pig iron is favoured by_______________________?

• (A)  Oxidising and basic slag
• (B)  Reducing and basic slag
• (C)  High activity co-efficient of phosphorous in metal
• (D)  Oxidising and neutral slag

Answer

Submitted By :Ali Uppal

Inertial forces are obtained, when the elastic forces are multiplied by ______________ number?

• (A)  Mach
• (B)  Froude
• (C)  Reynolds
• (D)  Euler

Answer

Submitted By :Ali Uppal

Metal shots used in shot blasting are made of ______________________?

• (A)  Stellite
• (B)  Steel
• (C)  Bronze
• (D)  Lead

Answer

Submitted By :Ali Uppal

Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot_____________________?

• (A)  Piercing
• (B)  Spinning
• (C)  Drawing
• (D)  Extrusion

Answer

Submitted By :Ali Uppal

A pycnometer is used for the measurement of________________________?

• (A)  Flow rate of molten metal
• (B)  Specific gravity of a liquid
• (C)  Composition of alloys
• (D)  Concentration of a solution

Answer

Submitted By :Ali Uppal

Dislocations are _______________ defects?

• (A)  Point
• (B)  Line
• (C)  Volume
• (D)  None of these

Answer

Submitted By :Ali Uppal

M10 index of coke indicates its____________________?

• (A)  Compressive strength
• (B)  Hardness
• (C)  Abrasion resistance
• (D)  Impact strength

Answer

Submitted By :Ali Uppal

Addition of _____________________ to steel does not impart hardness?

• (A)  Nickel
• (B)  Copper
• (C)  Chromium
• (D)  Silicon

Answer

Submitted By :Ali Uppal

Which of the following is an acidic constituent of B.F. slag ?

• (A)  SiO2
• (B)  FeO
• (C)  MgO
• (D)  CaO

Answer

Submitted By :Ali Uppal

Larger length & diameter water pipes are made by____________________?

• (A)  Electrical resistance welding
• (B)  Die casting
• (C)  Semi-centrifugal casting
• (D)  Continuous casting

Answer

Submitted By :Ali Uppal