Chemistry Which gas emitted by power stations causes acid rain? Helium Sulphur dioxide Carbon dioxide Nitrogen Helium Sulphur dioxide Carbon dioxide Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Nitrogen forms a variety of compounds in all oxidation states ranging from –3 to + 4 –3 to + 5 –3 to + 3 –3 to + 6 –3 to + 4 –3 to + 5 –3 to + 3 –3 to + 6 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water Magnesium None of these Calcium Manganese Magnesium None of these Calcium Manganese ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical formula of the laughing gas is N2O3 NO N2O NO2 N2O3 NO N2O NO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry When formaldehyde and potassium hydroxide are heated, we get Acetylene Methane Methyl alcohol Ethyl formate Acetylene Methane Methyl alcohol Ethyl formate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used to remove ink and rust stains on cloth? Ether Oxalic acid Alcohol Kerosene oil Ether Oxalic acid Alcohol Kerosene oil ANSWER DOWNLOAD EXAMIANS APP
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