Chemistry The elements with atomic numbers 9, 17, 35, 53, 85 are all Light metals Halogens Noble gases Heavy metals Light metals Halogens Noble gases Heavy metals ANSWER DOWNLOAD EXAMIANS APP
Chemistry Preparation of ‘Dalda or Vanaspati’ ghee from vegetable oil utilizes the following process : Hydrogenation Ozonolysis Hydrolysis Oxidation Hydrogenation Ozonolysis Hydrolysis Oxidation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Commercially, sodium bicarbonate is known as Washing soda Bleaching powder Baking soda Soda ash Washing soda Bleaching powder Baking soda Soda ash ANSWER DOWNLOAD EXAMIANS APP
Chemistry The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind? 1/8 1/6 1/3 1/4 1/8 1/6 1/3 1/4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium vapour lamps glow with yellow colour. This is due to sublimation of sodium to emit yellow colour The low ionisation energy of sodium The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum Its ability to absorb all other colours except yellow sublimation of sodium to emit yellow colour The low ionisation energy of sodium The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum Its ability to absorb all other colours except yellow ANSWER DOWNLOAD EXAMIANS APP
Chemistry Catalyst is a substance which Has no action on the rate of the reaction Decreases the rate of reaction None of these Increases the rate of the reaction Has no action on the rate of the reaction Decreases the rate of reaction None of these Increases the rate of the reaction ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS