Chemistry Which one of the following nonmetals shows allotropy in the liquid state? Phosphorous Sulphur Carbon Bromine Phosphorous Sulphur Carbon Bromine 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 5x 5x/36 7.2 x x/6 5x 5x/36 7.2 x x/6 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one is a sublime substance? Sugar Table salt Iodine Potassium Iodide Sugar Table salt Iodine Potassium Iodide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Electric fuse is an alloy of Tin and lead Zinc and lead Carbon and tin Copper and iron Tin and lead Zinc and lead Carbon and tin Copper and iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium vapour lamps glow with yellow colour. This is due to The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum Its ability to absorb all other colours except yellow sublimation of sodium to emit yellow colour The low ionisation energy of sodium The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum Its ability to absorb all other colours except yellow sublimation of sodium to emit yellow colour The low ionisation energy of sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Permanent – hardness of water may be removed by addition of Sodium carbonate Potassium Permangante Lime Alum Sodium carbonate Potassium Permangante Lime Alum ANSWER DOWNLOAD EXAMIANS APP
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