A. June
B. December
C. July
D. September
Related Mcqs:
- Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about _______________ decibels?
A. 105
B. 135
C. 160
D. 185 - Brown spots in fabrics will be caused by washing with water containing large amount of___________________?
A. Iron
B. Zinc
C. Iodine
D. Bromine - The weakest sound that can be heard by a person in a quiet environment is equivalent to ____________ decibel ?
A. 1
B. 5
C. 10
D. 50 - A man exposed to excessive noise level in the working environment may suffer from____________________?
A. Hearing loss
B. Rupture of ear drum
C. Nervousness & fatigue
D. All A., B. & C. - As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is _____________ μg/m3.(μg-microgram)?
A. 10
B. 90
C. 800
D. 750 - Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is _____________ decibels?
A. 35
B. 75
C. 95
D. 105 - World’s worst radioactive pollution was caused by nuclear reactor disaster which occured in ___________________?
A. Arizona (U.S.A.)
B. Chernobyl (undivided U.S.S.R.)
C. Pennsylvania (U.S.A.)
D. Moscow (U.S.S.R.) - The term Biological Oxygen Demand (BOD) is used in relation to ______________________?
A. Potable water
B. Cooling water
C. Distilled water
D. Industrial effluents - Removal of ______________ results from the disinfection of water?
A. Turbidity
B. Odour
C. Hardness
D. Bacteria - When the concentration of SO2 in air is greater than ______________ ppm, it gives a pungent smell?
A. 0.01
B. 0.1
C. 1
D. 4
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