Chemistry Two elements which can form a large number of compounds are Carbon and Oxygen Carbon and Nitrogen Carbon and Hydrogen Carbon and Sulphur Carbon and Oxygen Carbon and Nitrogen Carbon and Hydrogen Carbon and Sulphur ANSWER DOWNLOAD EXAMIANS APP
Chemistry A balloon filled with helium rises in air because Helium pushes down on the air below the balloon The balloon is weightless Air exerts an upward force on the balloon Helium is less dense than air Helium pushes down on the air below the balloon The balloon is weightless Air exerts an upward force on the balloon Helium is less dense than air ANSWER DOWNLOAD EXAMIANS APP
Chemistry Bone ash contains Calcium hypophosphate Calcium sulphate Calcium phosphate Phosphoric sulphate Calcium hypophosphate Calcium sulphate Calcium phosphate Phosphoric sulphate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of hydrogen bonds between guanine and cytosine in DNA is 2 4 3 1 2 4 3 1 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is secondary air pollutant ? SO2 Dust particles NO2 Photochemical smog SO2 Dust particles NO2 Photochemical smog ANSWER DOWNLOAD EXAMIANS APP
Chemistry The major constituent of air is carbon dioxide hydrogen nitrogen oxygen carbon dioxide hydrogen nitrogen oxygen ANSWER DOWNLOAD EXAMIANS APP
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