Chemistry The oxidation number of nickel in K4[Ni(CN)4] is 4 8 Zero –4 4 8 Zero –4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Commercial nitric acid is coloured because it contains dissolved : Nitrogen dioxide Oxygen Nitrous oxide Coloured impurities Nitrogen dioxide Oxygen Nitrous oxide Coloured impurities ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used to remove rust stains on cloth? Lime Kerosene Petrol Oxalic acid solution Lime Kerosene Petrol Oxalic acid solution ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is the highest quality of hard coal? Anthracite Bituminous Peat Lignite Anthracite Bituminous Peat Lignite ANSWER DOWNLOAD EXAMIANS APP
Chemistry The Latin word formica means ant. The name formic acid is derived from this Latin word because this corrosive acid is secreted by ants to drive away their enemies ants are attracted by the odour of this acid this acid, in ancient times, was used to eliminate ant-hills this acid was first obtained by the distillation of ants this corrosive acid is secreted by ants to drive away their enemies ants are attracted by the odour of this acid this acid, in ancient times, was used to eliminate ant-hills this acid was first obtained by the distillation of ants ANSWER DOWNLOAD EXAMIANS APP
Chemistry When Hydrogen starts burning in air, it produces ? Carbonic Acid Water Methane Ammonia Carbonic Acid Water Methane Ammonia ANSWER DOWNLOAD EXAMIANS APP
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