Chemistry Magnetite is Fe2O3 Fe3O4 2Fe2O3. 3H2O FeCO3 Fe2O3 Fe3O4 2Fe2O3. 3H2O FeCO3 ANSWER DOWNLOAD EXAMIANS APP
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 An example of replenishable energy source is– Biomass Lignite Coal Petroleum Biomass Lignite Coal Petroleum ANSWER DOWNLOAD EXAMIANS APP
Chemistry A balloon filled with helium rises in air because Air exerts an upward force on the balloon Helium pushes down on the air below the balloon The balloon is weightless Helium is less dense than air Air exerts an upward force on the balloon Helium pushes down on the air below the balloon The balloon is weightless Helium is less dense than air ANSWER DOWNLOAD EXAMIANS APP
Chemistry The element which is used for vulcanizing rubber Phosphorus Sulphur Silicon Bromine Phosphorus Sulphur Silicon Bromine ANSWER DOWNLOAD EXAMIANS APP
Chemistry The important ore of aluminium is Cryolite Bauxite Fluorspar Haematite Cryolite Bauxite Fluorspar Haematite ANSWER DOWNLOAD EXAMIANS APP
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