Chemistry The material used in solar cells contains Tin Caesium Silicon Thallium Tin Caesium Silicon Thallium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Many people died in London in 1952 as result of air pollution producing Fog Sleet Mist Smog Fog Sleet Mist Smog ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silicon is used in Transistors Semiconductors Solar energy devices All of these Transistors Semiconductors Solar energy devices All of these ANSWER DOWNLOAD EXAMIANS APP
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 7.2 x 5x/36 5x x/6 7.2 x 5x/36 5x x/6 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Vinegar is an aqueous solution of Citric acid Acetic acid Oxalic acid Hydrochloric acid Citric acid Acetic acid Oxalic acid Hydrochloric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry The compound that has the least value for octane number is : Iso-octane 2,2-dimethyl hexane 2-methyl heptane N-heptane Iso-octane 2,2-dimethyl hexane 2-methyl heptane N-heptane ANSWER DOWNLOAD EXAMIANS APP
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