Chemical Engineering Mcqs

A ‘body’ which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the________________?

• (A)  Global warming
• (B)  Green house
• (C)  Atmospheric effect
• (D)  Ionosphere

Answer

Submitted By :Ali Uppal

Thermal pollution due to excessive heat & temperature in the working place causes__________________?

• (A)  Reduction in working efficiency of manpower
• (B)  Fatigue
• (C)  High breathing rate
• (D)  All

Answer

Submitted By :Ali Uppal

Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in___________________?

• (A)  Food industry
• (B)  Municipal sewage treatment
• (C)  Petroleum refinery
• (D)  Iron & steel plant

Answer

Submitted By :Ali Uppal

Inhalation of lead compounds present in the automobile exhausts (using leaded petrol) causes________________?

• (A)  Blood poisoning
• (B)  Anaemia
• (C)  Nervous system disorder
• (D)  All

Answer

Submitted By :Ali Uppal

Pick out the one which is not a chemical coagulant ?

• (A)  Aluminium sulphate
• (B)  Ferrous sulphate
• (C)  Hydrated lime
• (D)  Chloramine

Answer

Submitted By :Ali Uppal

Presence of dissolved impurities of ______________ is responsible for the red brownish color of water?

• (A)  Carbonates
• (B)  Bi-carbonates
• (C)  Iron & manganese
• (D)  Arsenic

Answer

Submitted By :Ali Uppal

The concentration of water vapour in troposphere, which depends upon the altitude & temperature, varies in the range of zero to ______________ percent?

• (A)  1
• (B)  4
• (C)  8
• (D)  12

Answer

Submitted By :Ali Uppal

Turbidity of water is an indication of the presence of__________________?

• (A)  Suspended inorganic matter
• (B)  Dissolved solids
• (C)  Floating solids
• (D)  Dissolved gases

Answer

Submitted By :Ali Uppal

‘Particulate’ air pollutants are finely divided solids and liquids. Which of the following is not a „particulate‟ ?

• (A)  Dust & mists
• (B)  Smoke & fumes
• (C)  Photochemical smog & soot
• (D)  None of these

Answer

Submitted By :Ali Uppal

During which of the following operating conditions of an automobile, carbon monoxide content in the exhaust gas is maximum ?

• (A)  Idle running
• (B)  Acceleration
• (C)  Cruising
• (D)  Deceleration

Answer

Submitted By :Ali Uppal