Chemistry When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy siate, they emit light, which we can observe in Emission spectra Fluorescence Raman spectra Absorption spectra Emission spectra Fluorescence Raman spectra Absorption spectra ANSWER DOWNLOAD EXAMIANS APP
Chemistry The advantage of detergents over soaps is Soaps give lather with only soft water Detergents could not give much lather Detergents are soluble in water Detergents give lather even with hard water Soaps give lather with only soft water Detergents could not give much lather Detergents are soluble in water Detergents give lather even with hard water ANSWER DOWNLOAD EXAMIANS APP
Chemistry Preparation of ‘Dalda or Vanaspati’ ghee from vegetable oil utilizes the following process : Ozonolysis Oxidation Hydrolysis Hydrogenation Ozonolysis Oxidation Hydrolysis Hydrogenation ANSWER DOWNLOAD EXAMIANS APP
Chemistry The purest form of water in nature is Sea water Lake water River water Rain water Sea water Lake water River water Rain water ANSWER DOWNLOAD EXAMIANS APP
Chemistry The elements with atomic numbers 9, 17, 35, 53, 85 are all Halogens Light metals Noble gases Heavy metals Halogens Light metals Noble gases Heavy metals ANSWER DOWNLOAD EXAMIANS APP
Chemistry In a reaction of the type A+B ? C+D one could ensure it to be a first order reaction by : Adding a catalyst Increasing the concentration of a product Increasing the concentration of a reactant Increasing the temperature Adding a catalyst Increasing the concentration of a product Increasing the concentration of a reactant Increasing the temperature ANSWER DOWNLOAD EXAMIANS APP
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