Chemistry Which of the following appeared to be with a significant potential for accumulation through food chains ? DDT Parathion Carbary Lindane DDT Parathion Carbary Lindane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Electric bulbs are filled with : Carbon dioxide Oxygen Nitrogen Argon Carbon dioxide Oxygen Nitrogen Argon ANSWER DOWNLOAD EXAMIANS APP
Chemistry When Hydrogen starts burning in air, it produces ? Ammonia Methane Carbonic Acid Water Ammonia Methane Carbonic Acid Water ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass gets discoloured in air due to constant exposure in presence of: Hydrogen sulphide Aluminium phosphide Aluminium sulphide Hydrogenated wafers Hydrogen sulphide Aluminium phosphide Aluminium sulphide Hydrogenated wafers ANSWER DOWNLOAD EXAMIANS APP
Chemistry The lustre of the metals is because of Absorption of light due to the presence of cavities Reflection of light due to the presence of free electrons High polish High density, due to closed packing of atoms Absorption of light due to the presence of cavities Reflection of light due to the presence of free electrons High polish High density, due to closed packing of atoms ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is secondary air pollutant ? NO2 Photochemical smog Dust particles SO2 NO2 Photochemical smog Dust particles SO2 ANSWER DOWNLOAD EXAMIANS APP
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