Chemistry Ozone saves the biosphere by absorbing high energy radiations called ________ . X–rays Infra-red (IR) Ultraviolet rays (UV) Gamma rays X–rays Infra-red (IR) Ultraviolet rays (UV) Gamma rays ANSWER DOWNLOAD EXAMIANS APP
Chemistry Nitric acid does not react with Iron Copper Gold Zinc Iron Copper Gold Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal ion present in Vitamin B12 is Nickel Zinc Iron Cobalt Nickel Zinc Iron Cobalt ANSWER DOWNLOAD EXAMIANS APP
Chemistry The buffer action of blood is due to the presence of HCI and NaCI [HCO3]– and H2CO3 CI– and [CO3]2– CI– and [HCO3]– HCI and NaCI [HCO3]– and H2CO3 CI– and [CO3]2– CI– and [HCO3]– ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal that is used as a catalyst in the hydrogenation of oils is Pb Pt Cu Ni Pb Pt Cu Ni ANSWER DOWNLOAD EXAMIANS APP
Chemistry Number of6.023 × 1020 atoms present in one mole of a gas at STP is 6.023 × 1023 6.023 × 1020 '6.023 × 10–23 '6.023 × 10–20 6.023 × 1023 6.023 × 1020 '6.023 × 10–23 '6.023 × 10–20 ANSWER DOWNLOAD EXAMIANS APP
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