Chemistry Silver halides are used in photographic plates because they are Totally colourless Reduced by light Soluble in hyposolution Oxidised in air Totally colourless Reduced by light Soluble in hyposolution Oxidised in air ANSWER DOWNLOAD EXAMIANS APP
Chemistry Copper substances when exposed to air gains a green coating due to the formation of: Cu(NO3)2 CuO CuCO3 Cu(OH)2 CuSO4 Cu(NO3)2 CuO CuCO3 Cu(OH)2 CuSO4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas produced in marshy places due to decomposition of vegetation is Methane Carbon dioxide Sulphur dioxide Carbon monoxide Methane Carbon dioxide Sulphur dioxide Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is secondary air pollutant ? Photochemical smog NO2 SO2 Dust particles Photochemical smog NO2 SO2 Dust particles ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is the best fuel in terms of energy released per gram of fuel? Hydrogen Butane Methane Ethanol Hydrogen Butane Methane Ethanol ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals pollutes the air of a city having large number of automobiles? Lead Cadmium Chromium Copper Lead Cadmium Chromium Copper ANSWER DOWNLOAD EXAMIANS APP
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