Chemistry Earth’s atmosphere is an envelope of gases extending to a height of 300 km 100 km 200 km 150 km 300 km 100 km 200 km 150 km ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal chiefly used for galvanising iron is : Cadmium Tin Zinc Mercury Cadmium Tin Zinc Mercury ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most important ore of aluminium is haematite monazite bauxite magnetite haematite monazite bauxite magnetite ANSWER DOWNLOAD EXAMIANS APP
Chemistry White coal is None of these Uranium Diamond Hydro-electricity None of these Uranium Diamond Hydro-electricity ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most important ore of lead is Pyrolusite Galena Magnetite Siderite Pyrolusite Galena Magnetite Siderite ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas which is mainly responsible for the green house effect is: Ozone Oxygen Carbon dioxide Carbon monoxide Ozone Oxygen Carbon dioxide Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
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