Chemistry The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is methane ozone helium oxygen methane ozone helium oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Adding Cl2 to benzene in the presence of AlCl3 is an example of : Addition reaction None of the options Elimination reaction Substitution reaction Addition reaction None of the options Elimination reaction Substitution reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal ion present in Vitamin B12 is Iron Zinc Cobalt Nickel Iron Zinc Cobalt Nickel ANSWER DOWNLOAD EXAMIANS APP
Chemistry Coal is formed from Compressed and hardened biomass Deposit of animal waste Coke Crude oil Compressed and hardened biomass Deposit of animal waste Coke Crude oil ANSWER DOWNLOAD EXAMIANS APP
Chemistry When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is Hydrogen Carbon dioxide Oxygen All of them Hydrogen Carbon dioxide Oxygen All of them ANSWER DOWNLOAD EXAMIANS APP
Chemistry Among the fuels given below, the one with highest calorific value is Coke Wood Natural gas Coal Coke Wood Natural gas Coal ANSWER DOWNLOAD EXAMIANS APP
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