Chemistry Which one of the following minerals is found in Monazite sand ? Sodium Uranium Thorium Potassium Sodium Uranium Thorium Potassium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used for filling weather balloons is Hydrogen Air Helium Nitrogen Hydrogen Air Helium Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the element that is in the highest percentage in the composition of the earth ? Silicon Magnesium Oxygen Iron Silicon Magnesium Oxygen Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one is a sublime substance? Table salt Iodine Potassium Iodide Sugar Table salt Iodine Potassium Iodide Sugar ANSWER DOWNLOAD EXAMIANS APP
Chemistry Neoprene is prepared by polymerisation of which of the following 2-methyl 1, 3-butadiene 2-chloro-1, 3-butadiene 1,3-butadiene Acrylonitrile 2-methyl 1, 3-butadiene 2-chloro-1, 3-butadiene 1,3-butadiene Acrylonitrile ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium vapour lamps glow with yellow colour. This is due to The low ionisation energy of sodium sublimation of sodium to emit yellow colour 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 The low ionisation energy of sodium sublimation of sodium to emit yellow colour 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 ANSWER DOWNLOAD EXAMIANS APP
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