Chemistry Which of the following is used in welding broken pieces of iron rails and machine parts? Aluminium powder Solder Aluminium sulphate None of these Aluminium powder Solder Aluminium sulphate None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry The process of improving the quality of rubber by heating it with sulphur is called. Acceleration Galvanization Vulcanization Sulphonation Acceleration Galvanization Vulcanization Sulphonation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical name of common salt is Sodium Oxide Sodium Bicarbonate Sodium Sodium Chloride Sodium Oxide Sodium Bicarbonate Sodium Sodium Chloride ANSWER DOWNLOAD EXAMIANS APP
Chemistry Browning of paper in old books is caused by Lack of aeration Collection of dust Frequent use Oxidation of cellulose Lack of aeration Collection of dust Frequent use Oxidation of cellulose ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is a common name for the substance which irritates lachrymal glands ? Tear Gas Anaesthetic Gas Laughing Gas Noble Gas Tear Gas Anaesthetic Gas Laughing Gas Noble Gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main constituent of biogas is Methyl alcohol Acetic acid Methane Oxygen Methyl alcohol Acetic acid Methane Oxygen ANSWER DOWNLOAD EXAMIANS APP
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