Chemistry Ruby and sapphire are oxides of Iron Copper Tin Aluminium Iron Copper Tin Aluminium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass gets discoloured in air due to constant exposure in presence of: Hydrogen sulphide Aluminium sulphide Hydrogenated wafers Aluminium phosphide Hydrogen sulphide Aluminium sulphide Hydrogenated wafers Aluminium phosphide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is the purest commercial form of iron ? Steel Wrought iron Stainless steel Pig iron Steel Wrought iron Stainless steel Pig iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry One of the constituents of tear gas is Chloropicrin Ethanol Ethane Ether Chloropicrin Ethanol Ethane Ether ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used in making smoke bombs? Phosphorus Carbon Sulphur Hydrogen Phosphorus Carbon Sulphur Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main buffer system of the human blood is CH3COOH - CH3COO- H2CO3 - HCO3 H2CO3 - CO32- NH2CONH2 - NH2CONH+ CH3COOH - CH3COO- H2CO3 - HCO3 H2CO3 - CO32- NH2CONH2 - NH2CONH+ ANSWER DOWNLOAD EXAMIANS APP
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