Chemistry Major portion of the earth’s crust is mainly constituted by Oxygen and Iron Oxygen and Silicon Silicon and Aluminium Silicon and Iron Oxygen and Iron Oxygen and Silicon Silicon and Aluminium Silicon and Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Dry powder fire extinguishers contain Sand and sodium carbonate Sand Sand and potassium carbonate Sand and sodium bicarbonate Sand and sodium carbonate Sand Sand and potassium carbonate Sand and sodium bicarbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The two metal ions that cause hardness to water are: Calcium, Magnesium Sodium, Potassium Sodium, Magnesium Sodium, Calcium Calcium, Magnesium Sodium, Potassium Sodium, Magnesium Sodium, Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Find the odd one: Chalk Slaked lime Marble Limestone Chalk Slaked lime Marble Limestone ANSWER DOWNLOAD EXAMIANS APP
Chemistry The high reactivity of fluorine is due to availability of d-orbitals strong F - F bond its high electro negativity small size of fluorine atom availability of d-orbitals strong F - F bond its high electro negativity small size of fluorine atom ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sulphur dioxide bleaches colouring matter by : Reduction Oxidation Decomposition Dehydration Reduction Oxidation Decomposition Dehydration ANSWER DOWNLOAD EXAMIANS APP
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