A. Low ozone layer thickness in polar regions is due to cold climatic conditions B. Amount of unburnt hydrocarbons emitted by two stroke petrol engine is more as compared to that emitted by a four stroke engine C. Carbon monoxide present in the two stroke petrol engine exhaust is much less as compared to that … Pick out the wrong statement ?Read More...
A. Benzopyrene which causes cancer is present in traces in tobacco, charcoal & petrol driven automobile exhaust B. NO2 is capable of penetrating the troposphere and can absorb both ultraviolet & visible light C. Hydrocarbon pollutants are produced by sweet gum, oak & natural rubber trees D. H2S is not at all produced during combustion … Pick out the wrong statement?Read More...
A. Embrittlement & decrease of folding resistance of paper B. Cracking of rubber products C. Fading of dye on textiles D. Damage of electrical insulator on high tension power line...
Recent Comments