Ionisation chamber can be used for the detection of all of the following EXCEPT
A.beta rays
B.X-rays
C.gamma rays
D.Alpha rays
Category: Environmental Engineering Mcqs
Out of the following metals the least permissible percentage in drinking water is
A.Chromium
B.Copper
C.Zinc
D.Lead
Mottling of teeth is associated with the presence of
A.Chloride in water
B.Calcium in water
C.Sodium chloride in water
D.Sulphur in water
E.Fluorides in water
Which of the following industry is least polluting?
A.Cement industry
B.Oil refinery
C.Thermal power plants
D.Electronic industry
E.Rolling mills
The maximum concentration of lead in drinking water should not exceed.
A.0.0005 mg/litre
B.0.005 mg/litre
C.0.05 mg/litre
D.0.5 mg/litre
E.5 mg/litre
The hardness of soft water (in ppm) is
A.0 – 50
B.50 – 150
C.200 – 350
D.375 – 500
E.500 – 1000
Which of the following operation produces highest noise level?
A.welding
B.Riveting
C.Machining
D.Pressing
Soft waters
A.Have corrosive action on metals
B.Dissolve lead
C.Corrode iron
D.All of the above
E.None of the above
The pH value of concentrated sulphuric acid could be expected between
A.7 and 6
B.6 and 5
C.4 and 3
D.3 and 1
E.1 and 0
Theodolite is used by
A.Surveyors
B.Cartrographers
C.Physicists
D.Electronic Engineers
