Chemistry Which one of the following contributes largely to the ‘green house effect’ ? Ozone Water vapour Carbon monoxide Carbon dioxide Ozone Water vapour Carbon monoxide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Pyrethrin used in mosquito coil is obtained from An insect A seed plant A bacterium A fungus An insect A seed plant A bacterium A fungus ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following was used as a chemical weapon in the first world war ? Hydrogen cyanide Mustard gas Carbon monoxide Water gas Hydrogen cyanide Mustard gas Carbon monoxide Water gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following statement is correct ?Ozone is found in the earth's atmosphere mostly between 20 and 50 km 10 and 20 km 5 and 10 km 50 and 100 km 20 and 50 km 10 and 20 km 5 and 10 km 50 and 100 km ANSWER DOWNLOAD EXAMIANS APP
Chemistry When water itself combines chemically with some element or mineral it is called Oxidation Desilication Hydration Carbonation Oxidation Desilication Hydration Carbonation ANSWER DOWNLOAD EXAMIANS APP
Chemistry The rusting of iron is a/an Electrical change Physical change Electrochemical change None of these Electrical change Physical change Electrochemical change None of these ANSWER DOWNLOAD EXAMIANS APP
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