Chemistry Nitrogen forms a variety of compounds in all oxidation states ranging from –3 to + 3 –3 to + 6 –3 to + 4 –3 to + 5 –3 to + 3 –3 to + 6 –3 to + 4 –3 to + 5 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Magnalium is an alloy of Manganese and Magnesium Aluminium and Magnesium Magnesium and Tin Aluminium and Zinc Manganese and Magnesium Aluminium and Magnesium Magnesium and Tin Aluminium and Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the product formed when sodium bicarbonate is heated strongly? Sodium Peroxide Sodium Monoxide Sodium Hydroxide Sodium Carbonate Sodium Peroxide Sodium Monoxide Sodium Hydroxide Sodium Carbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The first metal used by man was bronze gold iron copper bronze gold iron copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry Highest percentage of carbon is found in which form of coal? Lignite Bituminous Peat Anthracite Lignite Bituminous Peat Anthracite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Formation of ozone hole is maximum over Africa India Antarctica Europe Africa India Antarctica Europe ANSWER DOWNLOAD EXAMIANS APP
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