A. Ozone
B. Photochemical smog
C. Sulphur dioxide
D. All A., B. & C.
Related Mcqs:
- Which of the following is a secondary air pollutant ?
A. Photochemical smog
B. Sulphur dioxide
C. Nitrogen dioxide
D. Dust particles - ‘Safe limit’ called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the____________________?
A. Industrial chimney exhaust
B. Automobiles exhaust
C. Photochemical reaction in polluted atmosphere
D. Burning of domestic fuel - Which of the following is the most severe air pollutant ?
A. Hydrocarbons
B. NOx
C. SO2
D. CO - Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes_________________?
A. Paralysis of muscles & loss of appetite
B. Nervous depression
C. Gastritis and diarrhea
D. All A., B. and C. - The main industrial source of emission of hydrogen sulphide air pollutant is________________?
A. Petroleum refineries
B. Coal based thermal power plants
C. Pulp and paper plant
D. Metallurgical roasting & smelting plant - _____________ plant emits large amount of SO2 as an air pollutant?
A. Nitric acid
B. Sulphuric acid
C. Chlor alkali
D. Iron & steel - Pure oxygen is mixed with air to produce an enriched air containing 50 volume % of oxygen. The ratio of moles of air to oxygen used is_________________?
A. 1.72
B. 0.58
C. 0.5
D. 0.2 - A car tyre of volume 0.057 m3 is inflated to 300 kPa at 300 K. After the car is driven for 10 hours, the pressure in the tyre increases to 330 kPa. Assume air is an ideal gas and Cv for air is 21 J/mole.K. The change in the internal energy of air in the tyre in J/mole is__________________?
A. 380
B. 630
C. 760
D. 880 - Which of the following is not a weightless pollutant ?
A. SPM
B. Thermal pollution
C. Radioactive rays
D. Noise pollution - Which of the following is the most lethal water pollutant ?
A. Phenol and cyanide
B. Chlorine
C. Alkalis
D. Suspended solids
