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 Fluorescence Emission spectra Raman spectra Absorption spectra Fluorescence Emission spectra Raman spectra Absorption spectra ANSWER DOWNLOAD EXAMIANS APP
Chemistry The element with highest first ionisation energy is Hydrogen Lithium Sodium Helium Hydrogen Lithium Sodium Helium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The addition of gypsum to portland cement helps in : Preventing rapid setting of cement Increasing the strength of cement Reduction in the cost of cement Rapid setting of cement Preventing rapid setting of cement Increasing the strength of cement Reduction in the cost of cement Rapid setting of cement ANSWER DOWNLOAD EXAMIANS APP
Chemistry Particulates (< 1 µm size) remaining suspended in air indefinitely and transported by wind currents are called Mists Aerosols Fumes Smoke Mists Aerosols Fumes Smoke ANSWER DOWNLOAD EXAMIANS APP
Chemistry Cement is made hard with Dehydration Polymerisation Dissociation of water Hydration and dissociation of water Dehydration Polymerisation Dissociation of water Hydration and dissociation of water ANSWER DOWNLOAD EXAMIANS APP
Chemistry An alloy used in making heating elements for electric heating device is Nichrome Alloy Steel Solder German Silver Nichrome Alloy Steel Solder German Silver ANSWER DOWNLOAD EXAMIANS APP
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