Chemistry The gas used for filling weather balloons is Helium Hydrogen Air Nitrogen Helium Hydrogen Air Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal that is usually extracted from sea water is K Ca Mg Na K Ca Mg Na ANSWER DOWNLOAD EXAMIANS APP
Chemistry Particulates (< 1 µm size) remaining suspended in air indefinitely and transported by wind currents are called Mists Aerosols Fumes Smoke Mists Aerosols Fumes Smoke ANSWER DOWNLOAD EXAMIANS APP
Chemistry PH scale ranges from 8 – 14 None 0 – 14 0 – 7 8 – 14 None 0 – 14 0 – 7 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Soldering of two metals is possible because of the property of : Osmosis Cohesion Surface tension Viscosity Osmosis Cohesion Surface tension Viscosity ANSWER DOWNLOAD EXAMIANS APP
Chemistry Polythene is polymer of Propylene Aniline Ethylene Acetylene Propylene Aniline Ethylene Acetylene ANSWER DOWNLOAD EXAMIANS APP
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