General Science Which metal pollute the air of a big city? Cadmium Lead Copper Chromium Cadmium Lead Copper Chromium ANSWER DOWNLOAD EXAMIANS APP
General Science The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is Krypton Helium Argon Xenon Krypton Helium Argon Xenon ANSWER DOWNLOAD EXAMIANS APP
General Science Who suggested that most of the mass of the atom is located in the nucleus? Einstein Bohr Thompson Rutherford Einstein Bohr Thompson Rutherford ANSWER DOWNLOAD EXAMIANS APP
General Science The group of metals Fe, Co, Ni may best called as Alkali metals Rare metals Transition metals Main group metals Alkali metals Rare metals Transition metals Main group metals ANSWER DOWNLOAD EXAMIANS APP
General Science Tetraethyl lead is used as Pain Killer Mosquito Repellent Fire Extinguisher Petrol Additive Pain Killer Mosquito Repellent Fire Extinguisher Petrol Additive ANSWER DOWNLOAD EXAMIANS APP
General Science Permanent hardness of water may be removed by the addition of Potassium Permanganate Sodium Carbonate Alum Lime Potassium Permanganate Sodium Carbonate Alum Lime ANSWER DOWNLOAD EXAMIANS APP
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