Chemical Engineering Mcqs

Arsenic pollutant is not generated in _______________ industries?

(A) Tanneries
(B) Glass & ceramic
(C) Beverages
(D) Any of these

Submitted By :Ali Uppal

Pollution by particulate matter emission in the atmosphere does not take place during metal____________________?

(A) Grinding
(B) Machining
(C) Cutting
(D) Polishing

Submitted By :Ali Uppal

Fresh domestic sewage is _______________ in color?

(A) Grey
(B) Dark brown
(C) Red
(D) Black

Submitted By :Ali Uppal

Aerosols present in atmospheric air may be__________________?

(A) Positively charged
(B) Negatively charged
(C) Neutral
(D) Combination of all

Submitted By :Ali Uppal

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

(A) 80
(B) 100
(C) 125
(D) 150

Submitted By :Ali Uppal

A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of _____________ high above earth’s atmosphere, which absorbs it?

(A) Hydrogen
(B) Carbon dioxide
(C) Ozone
(D) None of these

Submitted By :Ali Uppal

Fluorosis is caused due to the presence of excessive amount of ______________ in drinking water?

(A) Mercury
(B) Lead
(C) Fluoride
(D) Arsenic

Submitted By :Ali Uppal

Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyll and haemoglobin breakdown of some animals, beyond TLV (>50 ppm) ?

(A) Acts as a green house gas thereby raising earth’s temperature
(B) Causes asphyxia
(C) Causes increase in sea level
(D) Enhances the green house effect

Submitted By :Ali Uppal

Soluble silica present in boiler feed water can be removed by______________________?

(A) Coagulation
(B) Filtration
(C) Anion exchanger
(D) Preheating it

Submitted By :Ali Uppal

Maximum permissible limit of mercury in human blood is ______________ micrograms/100 c.c?

(A) 1
(B) 7
(C) 19
(D) 82

Submitted By :Ali Uppal

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