Chemistry Silver nitrate solution is kept in brown bottles in laboratory because Brown bottles stops the passage of light through it Brown bottles react with it Brown bottles do not react with it It reacts with ordinary white bottles Brown bottles stops the passage of light through it Brown bottles react with it Brown bottles do not react with it It reacts with ordinary white bottles ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? Iron and cadmium Lead peroxide and lead Zinc and carbon Nickel and cadmium Iron and cadmium Lead peroxide and lead Zinc and carbon Nickel and cadmium 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 x/6 5x 7.2 x 5x/36 x/6 5x 7.2 x 5x/36 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The element used for making solar cells is Silicon Sodium Magnesium Calcium Silicon Sodium Magnesium Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the product formed when sodium bicarbonate is heated strongly? Sodium Peroxide Sodium Hydroxide Sodium Monoxide Sodium Carbonate Sodium Peroxide Sodium Hydroxide Sodium Monoxide Sodium Carbonate ANSWER DOWNLOAD EXAMIANS APP
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