Chemistry A balloon filled with helium rises in air because Helium pushes down on the air below the balloon Air exerts an upward force on the balloon The balloon is weightless Helium is less dense than air Helium pushes down on the air below the balloon Air exerts an upward force on the balloon The balloon is weightless Helium is less dense than air ANSWER DOWNLOAD EXAMIANS APP
Chemistry Hard steel contains 2 to 5 per cent carbon 0.1 to 0.4 per cent carbon 0.01 to 0.04 per cent carbon 0.5 to 1.5 per cent carbon 2 to 5 per cent carbon 0.1 to 0.4 per cent carbon 0.01 to 0.04 per cent carbon 0.5 to 1.5 per cent carbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used as an anti-freeze for the automobile engines ? Propyl alcohol Methanol Ethanol Ethylene glycol Propyl alcohol Methanol Ethanol Ethylene glycol ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical(s) most commonly used for cloud seeding or ‘artificial rainmaking’ is/are Silver Iodide All listed here Sodium Chloride Dry ice or frozen carbon dioxide Silver Iodide All listed here Sodium Chloride Dry ice or frozen carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Many people died in London in 1952 as result of air pollution producing Sleet Smog Fog Mist Sleet Smog Fog Mist ANSWER DOWNLOAD EXAMIANS APP
Chemistry The polymer obtained by the condensation of hexamethylene diamine and adipic acid is : Terylene Nylon 66 Tollen's Bakelite Terylene Nylon 66 Tollen's Bakelite ANSWER DOWNLOAD EXAMIANS APP
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