Chemistry The product, 9-nitroanthracene is obtained from anthracene by the action of Nitric acid in excess Nitric acid and acetic acid Nitric acid and acetic anhydride Nitric acid and ethyl alcohol Nitric acid in excess Nitric acid and acetic acid Nitric acid and acetic anhydride Nitric acid and ethyl alcohol ANSWER DOWNLOAD EXAMIANS APP
Chemistry What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper ? There is no reaction. There is a violent explosion. The paper ignites There is a crackling sound There is no reaction. There is a violent explosion. The paper ignites There is a crackling sound ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of 'Plaster of Paris' commonly used for setting broken bones is Calcium sulphate Calcium carbonate Calcium nitrate Calcium chloride Calcium sulphate Calcium carbonate Calcium nitrate Calcium chloride ANSWER DOWNLOAD EXAMIANS APP
Chemistry Mercury is emitted into air by Steam engine Burning coal Coal fire Burning garbage Steam engine Burning coal Coal fire Burning garbage ANSWER DOWNLOAD EXAMIANS APP
Chemistry When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is All of them Hydrogen Carbon dioxide Oxygen All of them Hydrogen Carbon dioxide Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Cement is made hard with Polymerisation Hydration and dissociation of water Dissociation of water Dehydration Polymerisation Hydration and dissociation of water Dissociation of water Dehydration ANSWER DOWNLOAD EXAMIANS APP
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