Chemistry Which of the following is also used as a Bio fertilizer? Ammonia Urea None of these Uric Acid Ammonia Urea None of these Uric Acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry The lustre of the metals is because of Reflection of light due to the presence of free electrons High density, due to closed packing of atoms Absorption of light due to the presence of cavities High polish Reflection of light due to the presence of free electrons High density, due to closed packing of atoms Absorption of light due to the presence of cavities High polish ANSWER DOWNLOAD EXAMIANS APP
Chemistry In arc welding, Argon is used because of its Ability to lower the melting point of the metal High flammability High calorific value Low reactivity with metal Ability to lower the melting point of the metal High flammability High calorific value Low reactivity with metal ANSWER DOWNLOAD EXAMIANS APP
Chemistry This group of alumino-silicate minerals is widely used in making electrical insulators Mica Chromite Bauxite Manganese Mica Chromite Bauxite Manganese ANSWER DOWNLOAD EXAMIANS APP
Chemistry Metal are good conductors, because They contain reflecting surface They contain free electrons The molecules in them collide very freely The molecules in them are very close to each other They contain reflecting surface They contain free electrons The molecules in them collide very freely The molecules in them are very close to each other ANSWER DOWNLOAD EXAMIANS APP
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 Absorption spectra Raman spectra Emission spectra Fluorescence Absorption spectra Raman spectra Emission spectra ANSWER DOWNLOAD EXAMIANS APP
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