Chemistry The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is x/6 5x 5x/36 7.2 x x/6 5x 5x/36 7.2 x ANSWER DOWNLOAD EXAMIANS APP
Chemistry Pyrethrin used in mosquito coil is obtained from An insect A fungus A seed plant A bacterium An insect A fungus A seed plant A bacterium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is most electronegative Carbon Tin Lead Silicon Carbon Tin Lead Silicon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Threshold limit value of copper in the atmospheric air is 0.01 mg/m3 0.001 mg/m3 1.0 mg/m3 5.0 mg/m3 0.01 mg/m3 0.001 mg/m3 1.0 mg/m3 5.0 mg/m3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following vitamins is generally excreted by human in urine? Vitamin B None of these Vitamin D Vitamin C Vitamin B None of these Vitamin D Vitamin C ANSWER DOWNLOAD EXAMIANS APP
Chemistry Lead pencil contains Lead sulphide Ferrous sulphide Lead Graphite Lead sulphide Ferrous sulphide Lead Graphite ANSWER DOWNLOAD EXAMIANS APP
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