Chemistry The green colour seen in firework displays is due to the chloride salt of : Sodium Calcium Strontium Barium Sodium Calcium Strontium Barium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical formula of the laughing gas is N2O NO2 NO N2O3 N2O NO2 NO N2O3 ANSWER DOWNLOAD EXAMIANS APP
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 Helium is less dense than air The balloon is weightless Helium pushes down on the air below the balloon Air exerts an upward force on the balloon Helium is less dense than air The balloon is weightless ANSWER DOWNLOAD EXAMIANS APP
Chemistry The monomers of dacron are Ethylene glygol and phthalic acid Decane and decanol Ethylene glycol and terephthalic acid Decanone and decanol Ethylene glygol and phthalic acid Decane and decanol Ethylene glycol and terephthalic acid Decanone and decanol ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a commercial source of energy? Coal Petroleum Firewood Natural Gas Coal Petroleum Firewood Natural Gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry When iron rusts, its weight Remains the same Increases Decreases First increases and then decreases Remains the same Increases Decreases First increases and then decreases ANSWER DOWNLOAD EXAMIANS APP
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