Related Questions

'Particulate' air pollutants are finely divided solids and liquids. Which of the following is not a 'particulate'?
A Dust & mists
B Smoke & fumes
C Photochemical smog & soot
D None of these
β-rays emission in radioactive disintegration is always accompanied by the emission of
A γ-rays
B α-rays
C Neutrons
D None of these
Which functional feeding groups are involved in the process of in-stream physical breakdown of coarse material into fine particulate organic matter?
A Collector filterers
B Shredders
C Grazers
D Collector gatherers
It is dangerous to leave the car engine running in a closed garage, because it may cause serious pollution due to poisoning by emission of
A CO2
B CO
C Unburnt petrol
D SO2
Which of the following is not a source of ozone emission in the atmosphere?
A Refrigerators
B Xerox machines
C Dermatological photo-therapy equipments
D High voltage electrical equipments
At Uttara High school each student studies exactly one foreign languages. Three-fifth of the students take Spanish and one-fourth of the remaining students take take German. If all of the others take French, What percent of the students take French?
A 10
B 30
C 20
D 25
Acid rain is caused due to emission of which of the following into the atmosphere ?
A Oxides of nitrogen and sulphur
B Carbon dioxide and carbon monoxide
C Ozone and carbon dioxide
D Carbon monoxide and nitrogen
A metal is exposed to the atmosphere for sometime. It becomes coated with green carbonate. The metal must be
A Silver
B Copper
C Aluminium
D Zinc
Choose the word that best completes the sentence : Noise pollution generally receives less attention than ----- air pollution.
A does
B it does
C over
D it does over
Air pollution caused by industrial fumes "has" been studied for years, "but " only recently "has" the harmful effects of noise pollution "become" known.
A 1
B 2
C 3
D 4

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