Chemistry The gas that usually causes explosions in coal mines is Carbon monoxide Air Hydrogen Methane Carbon monoxide Air Hydrogen Methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry The acid rain destroys vegetations because it contains Sulphuric acid Ozone Carbon monoxide Nitric acid Sulphuric acid Ozone Carbon monoxide Nitric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry When water itself combines chemically with some element or mineral it is called Desilication Carbonation Hydration Oxidation Desilication Carbonation Hydration Oxidation ANSWER DOWNLOAD EXAMIANS APP
Chemistry The green colour seen in firework displays is due to the chloride salt of : Calcium Sodium Barium Strontium Calcium Sodium Barium Strontium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The high reactivity of fluorine is due to strong F - F bond availability of d-orbitals small size of fluorine atom its high electro negativity strong F - F bond availability of d-orbitals small size of fluorine atom its high electro negativity ANSWER DOWNLOAD EXAMIANS APP
Chemistry ________ is used for making vinegar. Oxalic acid Malic acid Tartaric acid Acetic acid Oxalic acid Malic acid Tartaric acid Acetic acid ANSWER DOWNLOAD EXAMIANS APP
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