Chemistry A balloon filled with helium rises in air because 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 Helium pushes down on the air below the balloon Air exerts an upward force on the balloon The balloon is weightless ANSWER DOWNLOAD EXAMIANS APP
Chemistry An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a : Uninterrupted power supply (UPS) Generator Power transmittor Battery Uninterrupted power supply (UPS) Generator Power transmittor Battery ANSWER DOWNLOAD EXAMIANS APP
Chemistry Non-stick kitchenwares are coated with Silicon PVC Graphite Teflon Silicon PVC Graphite Teflon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brine refers to : Sweet water Pure water Starch water Salt water Sweet water Pure water Starch water Salt water ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal does not give H2 on treatment with dilute HCL is Ag Ca Zn Fe Ag Ca Zn Fe ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone depletion in the atmosphere is mainly caused by Chlorofluorocarbon Nitrogen dioxide Hydrogen sulphide Sulphur dioxide Chlorofluorocarbon Nitrogen dioxide Hydrogen sulphide Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
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