Chemical Engineering Mcqs

Maximum permissible sulphur content in steel is ______________ percent ?

• (A)  0.015
• (B)  0.055
• (C)  0.505
• (D)  0.805

Answer

Submitted By :Ali Uppal

A spring material should have low__________________?

• (A)  Elastic limit
• (B)  Deflection value
• (C)  Fatigue resistance
• (D)  None of these

Answer

Submitted By :Ali Uppal

A common disinfectant used in village wells for disinfection of water is __________________?

• (A)  Free chlorine
• (B)  Bromine
• (C)  Iodine
• (D)  Potassium permanganate

Answer

Submitted By :Ali Uppal

Which of the following is not an ore of copper ?

• (A)  Cryolite
• (B)  Azurite
• (C)  Chalcopyrite
• (D)  Malachite

Answer

Submitted By :Ali Uppal

The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding _______________ grinding wheel is normally used ?

• (A)  Hard
• (B)  Soft
• (C)  Silicon carbide
• (D)  Aluminium oxide

Answer

Submitted By :Ali Uppal

Stainless steel is welded with difficulty because of____________________?

• (A)  Its high melting temperature
• (B)  Chances of cracking
• (C)  Oxide film formation
• (D)  Chromium carbide formation

Answer

Submitted By :Ali Uppal

_____________________ of grey cast iron produces white cast iron?

• (A)  Tempering
• (B)  Rapid heating
• (C)  Rapid cooling
• (D)  Slow cooling

Answer

Submitted By :Ali Uppal

Sudden fall of atmospheric pressure by a large amount is an indication of the_____________________?

• (A)  Rain
• (B)  Cold wave
• (C)  Storm
• (D)  Fair weather

Answer

Submitted By :Ali Uppal

Which of the following is not a charge material for cupola ?

• (A)  Limestone
• (B)  Iron scrap
• (C)  Iron ore
• (D)  Pig iron

Answer

Submitted By :Ali Uppal

Transformation range for ferrous material is the temperature interval during which ___________________ is formed during its heating?

• (A)  Cementite
• (B)  Austenite
• (C)  Martensite
• (D)  Pearlite

Answer

Submitted By :Ali Uppal