Chemistry Which among the following coal contains 90 per cent of carbon? Peat Lignite Bitumen Anthracite Peat Lignite Bitumen Anthracite ANSWER DOWNLOAD EXAMIANS APP
Chemistry When a bond is formed between two atoms, the energy of the system will Increase May increase or decrease Decrease Remain the same Increase May increase or decrease Decrease Remain the same ANSWER DOWNLOAD EXAMIANS APP
Chemistry 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 CO Unburnt petrol CO2 SO2 CO Unburnt petrol CO2 SO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass gets discoloured in air due to constant exposure in presence of: Hydrogenated wafers Aluminium phosphide Hydrogen sulphide Aluminium sulphide Hydrogenated wafers Aluminium phosphide Hydrogen sulphide Aluminium sulphide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sulphur dioxide present in the industrial chimney exhaust causes All of these Corrosion building materials Reduction in plant's productivity owing to acid rain Respiratory and lung disease All of these Corrosion building materials Reduction in plant's productivity owing to acid rain Respiratory and lung disease ANSWER DOWNLOAD EXAMIANS APP
Chemistry Supersonic jet causes pollution by thinning of CO2 layer O3 layer O 2 layer SO2 layer CO2 layer O3 layer O 2 layer SO2 layer ANSWER DOWNLOAD EXAMIANS APP
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