Chemistry Laughing gas is Nitrogen trioxide Nitrogen pentoxide Nitrous oxide Nitric oxide Nitrogen trioxide Nitrogen pentoxide Nitrous oxide Nitric oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Cement is usually a mixture of : Calcium silicate and calcium ferrate Calcium silicate and calcium aluminate Lime stone and silicon dioxide Calcium aluminate and calcium ferrate Calcium silicate and calcium ferrate Calcium silicate and calcium aluminate Lime stone and silicon dioxide Calcium aluminate and calcium ferrate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals can displace copper from copper sulphate solution ? Gold Platinum Iron Mercury Gold Platinum Iron Mercury ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following causes the rusting of iron? a. Oxidation b. Reduction c. Chemical reaction with oxygend. Chemical reaction with CO2 A and b B and c C and d A and c A and b B and c C and d A and c ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is the purest commercial form of iron ? Steel Stainless steel Wrought iron Pig iron Steel Stainless steel Wrought iron Pig iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry The element with highest first ionisation energy is Lithium Helium Sodium Hydrogen Lithium Helium Sodium Hydrogen ANSWER DOWNLOAD EXAMIANS APP
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