Chemical Engineering Mcqs

The resistance of water to the passage of light through it is a measure of the___________________?

• (A)  Turbidity
• (B)  Color
• (C)  Hardness
• (D)  Dissolved gases

Answer

Submitted By :Ali Uppal

Polyvinyl chloride containers are not suitable for storing_________________?

• (A)  Foodstuffs
• (B)  Woolen clothes
• (C)  Metallic powder
• (D)  None of these

Answer

Submitted By :Ali Uppal

The earth’s atmosphere is an envelope of gases present upto a height of about ______________ kms?

• (A)  10
• (B)  200
• (C)  1000
• (D)  2000

Answer

Submitted By :Ali Uppal

Which of the following processes is involved in the biochemical treatment of sewage effluents ?

• (A)  Oxidation
• (B)  Reduction
• (C)  Dehydration
• (D)  Fermentation

Answer

Submitted By :Ali Uppal

The maximum CO2 is emitted into the atmosphere by_________________?

• (A)  Combustion
• (B)  Urea
• (C)  Biomass burning
• (D)  Trees

Answer

Submitted By :Ali Uppal

Color test of water is done with an instrument called__________________?

• (A)  Tintometer
• (B)  Colorimeter
• (C)  Electro-chemical cell
• (D)  Turbidimeter

Answer

Submitted By :Ali Uppal

Water filtration rate in a slow sand filter ranges from ____________ litres/m2/hr?

• (A)  10 to 20
• (B)  100 to 200
• (C)  1500 to 2500
• (D)  4000 to 5000

Answer

Submitted By :Ali Uppal

A masonry structure built below ground level, where biochemical reaction takes place due to anaerobic bacteria is called___________________?

• (A)  Cesspool
• (B)  Lagoon
• (C)  Skimming mill
• (D)  Septic tank

Answer

Submitted By :Ali Uppal

The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about ____________ decibels?

• (A)  60
• (B)  90
• (C)  105
• (D)  120

Answer

Submitted By :Ali Uppal

Maximum permissible residual chlorine in treated water should be ____________ mg/litre?

• (A)  0.001 to 0.01
• (B)  0.2 to 0.3
• (C)  2 to 3
• (D)  5 to 10

Answer

Submitted By :Ali Uppal