Chemical Engineering Mcqs

The activity of pure hydrogen gas at 1000°C and 5 atm pressure_________________?

• (A)  Is always less than 1
• (B)  Is always greater than 1
• (C)  Can be 5
• (D)  Depends on the choice of the standard state

Answer

Submitted By :Ali Uppal

Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8 ?

• (A)  °C
• (B)  °F
• (C)  °K
• (D)  °R

Answer

Submitted By :Ali Uppal

____________________ metal is used as a bearing liner material?

• (A)  Pewter
• (B)  White
• (C)  Babbitt
• (D)  Gun

Answer

Submitted By :Ali Uppal

Regeneration of molecular sieve requires it to be heated to a temperature of about __________________ °C?

• (A)  80-120
• (B)  200-300
• (C)  600-800
• (D)  1000-1100

Answer

Submitted By :Ali Uppal

The ‘laughing gas’ is__________________?

• (A)  Nitrous oxide
• (B)  Nitric oxide
• (C)  Nitrogen trioxide
• (D)  Nitrogen pentoxide

Answer

Submitted By :Ali Uppal

Heat transfer by ______________ is almost absent in case of fluidised bed drying operation?

• (A)  Radiation
• (B)  Conduction
• (C)  Convection
• (D)  Both

Answer

Submitted By :Ali Uppal

What is the range of tempering temperature (°C) for most of the materials ?

• (A)  75-100
• (B)  200-300
• (C)  350-450
• (D)  500-600

Answer

Submitted By :Ali Uppal

Boiler draught of 10 mm water column is equivalent to_____________________?

• (A)  1 kgf/m2
• (B)  10 kgf/m2
• (C)  10 kgf/mm2
• (D)  1 kgf/mm2

Answer

Submitted By :Ali Uppal

Which of the following is not a current asset of a chemical company ?

• (A)  Inventories
• (B)  Marketable securities
• (C)  Chemical equipments
• (D)  None of these

Answer

Submitted By :Ali Uppal

Steel produced from phosphatic iron is _______________ in nature?

• (A)  Malleable
• (B)  Ductile
• (C)  Brittle
• (D)  Tough

Answer

Submitted By :Ali Uppal