Chemistry Heating of a ore below its melting point in the absence of air is known as Roasting Smelting Calcination Refining Roasting Smelting Calcination Refining ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following forms of phosphorus is most reactive? White phosphorus Black phosphorus Violet phosphorus Red phosphorus White phosphorus Black phosphorus Violet phosphorus Red phosphorus ANSWER DOWNLOAD EXAMIANS APP
Chemistry What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper ? There is no reaction. There is a violent explosion. The paper ignites There is a crackling sound There is no reaction. There is a violent explosion. The paper ignites There is a crackling sound ANSWER DOWNLOAD EXAMIANS APP
Chemistry Galvanization of iron is carried out using Tin Chromium Copper Zinc Tin Chromium Copper Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry Colour imparted to the Bunsen flame by strontium salt is Crimson red Bluish green Apple-green Brick red Crimson red Bluish green Apple-green Brick red ANSWER DOWNLOAD EXAMIANS APP
Chemistry An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a : Battery Generator Uninterrupted power supply (UPS) Power transmittor Battery Generator Uninterrupted power supply (UPS) Power transmittor ANSWER DOWNLOAD EXAMIANS APP
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