Chemistry Now-a-days yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps ? Neon Hydrogen Sodium Nitrogen Neon Hydrogen Sodium Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The ionic radii of N3-, O2-, F- and Na+ follows the order Na+ > O2- > N3- > F- N3- > O2- > F- > Na+ N3- > Na+ > O2- > F- O2- > F- > Na+ > N3- Na+ > O2- > N3- > F- N3- > O2- > F- > Na+ N3- > Na+ > O2- > F- O2- > F- > Na+ > N3- ANSWER DOWNLOAD EXAMIANS APP
Chemistry Concentration of a material which is lethal to 50% animal is called NOAEL LC50 LD50 ADI NOAEL LC50 LD50 ADI ANSWER DOWNLOAD EXAMIANS APP
Chemistry Alcoholic (– OH) group can be identified by : Esterification Test FeCl3Test Ozonolysis Reaction Tollen's Reagent Test Esterification Test FeCl3Test Ozonolysis Reaction Tollen's Reagent Test ANSWER DOWNLOAD EXAMIANS APP
Chemistry Commercial Vaseline is derived from Petroleum Wool wax Coal tar Plant gums Petroleum Wool wax Coal tar Plant gums ANSWER DOWNLOAD EXAMIANS APP
Chemistry What happens when a chemical bond is formed ? More energy is released than is absorbed Energy is always absorbed Energy is neither released nor absorbed Energy in always released More energy is released than is absorbed Energy is always absorbed Energy is neither released nor absorbed Energy in always released ANSWER DOWNLOAD EXAMIANS APP
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