Chemistry Which substance is used to retard the setting action of cement? CaSO4, 2H2O CaO Al2O3 Na2O + K2O CaSO4, 2H2O CaO Al2O3 Na2O + K2O ANSWER DOWNLOAD EXAMIANS APP
Chemistry The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle? 3 billion years 100 years 13 days 0.01 minute 3 billion years 100 years 13 days 0.01 minute ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical used for cloud seeding for artificial rains is Potassium Bromide Potassium Nitrate Silver Nitrate Silver Iodide Potassium Bromide Potassium Nitrate Silver Nitrate Silver Iodide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Dry powder fire extinguishers contain Sand and sodium carbonate Sand and sodium bicarbonate Sand Sand and potassium carbonate Sand and sodium carbonate Sand and sodium bicarbonate Sand Sand and potassium carbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Conversion of chemical energy into electrical energy occurs in Dynamo Atomic bombs A battery Electric heaters Dynamo Atomic bombs A battery Electric heaters ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone saves the biosphere by absorbing high energy radiations called ________ . Ultraviolet rays (UV) X–rays Gamma rays Infra-red (IR) Ultraviolet rays (UV) X–rays Gamma rays Infra-red (IR) ANSWER DOWNLOAD EXAMIANS APP
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