Chemistry The product, 9-nitroanthracene is obtained from anthracene by the action of Nitric acid and acetic anhydride Nitric acid in excess Nitric acid and acetic acid Nitric acid and ethyl alcohol Nitric acid and acetic anhydride Nitric acid in excess Nitric acid and acetic acid Nitric acid and ethyl alcohol ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water Calcium None of these Manganese Magnesium Calcium None of these Manganese Magnesium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following fibres catches fire least ? Nylon Terricot Cotton Rayon Nylon Terricot Cotton Rayon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The drug ‘Marijuana’ is a Hallucinating substance Mental stimulant Tranquillizer Sedative Hallucinating substance Mental stimulant Tranquillizer Sedative ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a gaseous air pollutant? Oxides of sulphur Oxides of nitrogen Smoke Hydrocarbon Oxides of sulphur Oxides of nitrogen Smoke Hydrocarbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Peptization is a process of Protection of colloidal solution Purification of colloids Dispersing precipitates into colloidal solution Precipitation of colloidal particles Protection of colloidal solution Purification of colloids Dispersing precipitates into colloidal solution Precipitation of colloidal particles ANSWER DOWNLOAD EXAMIANS APP
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