Chemical Environmental Engineering

Which of the following is the most major constituents of air pollutants ?

Byadmin March 11, 2019August 29, 2021

Which of the following is the most major constituents of air pollutants ?

A. Oxides of sulphur
B. Oxides of nitrogen
C. Carbon monoxide
D. Hydrogen sulphide

Chemical Environmental Engineering

TLV of aldrin in public water supply system is about ____________ μg/litre?

TLV of aldrin in public water supply system is about ____________ μg/litre?

A. 0.5
B. 17
C. 357
D. 1097

Read More TLV of aldrin in public water supply system is about ____________ μg/litre?
Chemical Environmental Engineering

Noise level inside a jet airliner in normal flight is about ______________ decibels?

Noise level inside a jet airliner in normal flight is about ______________ decibels?

A. 80
B. 100
C. 125
D. 150

Read More Noise level inside a jet airliner in normal flight is about ______________ decibels?
Chemical Environmental Engineering

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

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

A. Blood poisoning
B. Anaemia
C. Nervous system disorder
D. All A., B. and C.

Read More Inhalation of lead compounds present in the automobile exhausts (using leaded petrol) causes________________?
Chemical Environmental Engineering

Which is the most widely used coagulant for the treatment of turbid water ?

Which is the most widely used coagulant for the treatment of turbid water ?

A. Alum (aluminium sulphate)
B. Lime
C. Ferric chloride
D. Sodium aluminate

Read More Which is the most widely used coagulant for the treatment of turbid water ?
Chemical Environmental Engineering

In troposphere (the weather domain), the temperature ‘t’ at height ‘h’ above the spa level in metres is given by (where, temperature at sea level is 15°C and t is in °C ?

In troposphere (the weather domain), the temperature ‘t’ at height ‘h’ above the spa level in metres is given by (where, temperature at sea level is 15°C and t is in °C ?

A. t = 15 – 0.0065h
B. t = 15 + 0.0065h
C. t = 0.0035h -15
D. t = 15 – 0.0035h

Read More In troposphere (the weather domain), the temperature ‘t’ at height ‘h’ above the spa level in metres is given by (where, temperature at sea level is 15°C and t is in °C ?
Chemical Environmental Engineering

Hydrogen ion concentration in distilled water is___________________?

Hydrogen ion concentration in distilled water is___________________?

A. 10-7
B. 7 × 10-7
C. 107
D. 7 × 107

Read More Hydrogen ion concentration in distilled water is___________________?

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