Chemistry A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? From blue to pink From brown to orange-red From brown to blue-black From pink to blue-green From blue to pink From brown to orange-red From brown to blue-black From pink to blue-green ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used as an anti-freeze for the automobile engines ? Ethanol Ethylene glycol Methanol Propyl alcohol Ethanol Ethylene glycol Methanol Propyl alcohol ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere? Carbon dioxide Chlorofluorocarbons Nitrous oxide Sulphur dioxide Carbon dioxide Chlorofluorocarbons Nitrous oxide Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ultra purification of a metal is done by : Zone melting Leaching Smelting Slugging Zone melting Leaching Smelting Slugging ANSWER DOWNLOAD EXAMIANS APP
Chemistry The element used in the manufacture of safety matches is Silicon Phosphorous Sulphur Magnesium Silicon Phosphorous Sulphur Magnesium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following chemicals helps in fruit ripening? Ethephon Isoproturan Atrazine Malathion Ethephon Isoproturan Atrazine Malathion ANSWER DOWNLOAD EXAMIANS APP
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