The noise level due to auto horn may be of the order of
A.110 dB
B.80 dB
C.50 dB
D.35 dB
Category: Environmental Engineering Mcqs
Scintillation counter can detect
A.beta rays
B.X-rays
C.gamma rays
D.All of the above
Which of the following industry will usually have the highest concumption of water for processing?
A.Foundry
B.Steel plant
C.Automobile industry
D.Paper mill
E.Aluminium industry
Carbon monoxide poisoning may cause
A.headache
B.drowsiness
C.dizziness
D.Any of the above
Which of the following can have octane rating of more than 100?
A.Gobar gas
B.Methyl alcohol
C.Benzol
D.Ethyl alcohol
Which of the following pollutant results from decaying organic matter?
A.Acetylene
B.Ozone
C.Ammonia
D.Nitric oxide
Temporary hardness in water in caused by salts like
A.Sulphates
B.Nitrates
C.Chlorides
D.Carbonates
E.All of the above
A hard water may contain
A.Calcium carbonate
B.Magnesium sulphate
C.Magnesium bicarbonate
D.Any of the above
E.None of the above
For portable water the permissible pH value is
A.1 – 4.5
B.4.5 – 7
C.7 – 8.5
D.9 — 11
E.11 — 14
What is a laser?
A.Electro-magnetic waves
B.Ultrasonic waves
C.Supersonic waves
D.Light amplification by stimulated emission of radiation
