Chemistry What is the element that is in the highest percentage in the composition of the earth ? Iron Oxygen Silicon Magnesium Iron Oxygen Silicon Magnesium ANSWER DOWNLOAD EXAMIANS APP
Chemistry When formaldehyde and potassium hydroxide are heated, we get Ethyl formate Methyl alcohol Acetylene Methane Ethyl formate Methyl alcohol Acetylene Methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of 'Plaster of Paris' commonly used for setting broken bones is Calcium sulphate Calcium nitrate Calcium chloride Calcium carbonate Calcium sulphate Calcium nitrate Calcium chloride Calcium carbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The greenhouse effect is caused by the higher level of which gas in the atmosphere ? Carbon dioxide Nitrous oxide Sulphur dioxide Carbon monoxide Carbon dioxide Nitrous oxide Sulphur dioxide Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry For generation of biogas, the materials commonly used are Forest residues Aquatic plants Crop residues Animal wastes Forest residues Aquatic plants Crop residues Animal wastes ANSWER DOWNLOAD EXAMIANS APP
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