Chemistry Which one of the following statement is correct ?Ozone is found in the earth's atmosphere mostly between 20 and 50 km 5 and 10 km 50 and 100 km 10 and 20 km 20 and 50 km 5 and 10 km 50 and 100 km 10 and 20 km ANSWER DOWNLOAD EXAMIANS APP
Chemistry The property of hydrogen which distinguishes it from alkali metals is Its reducing character Its electropositive character Its non-metallic character Its affinity for non-metal Its reducing character Its electropositive character Its non-metallic character Its affinity for non-metal ANSWER DOWNLOAD EXAMIANS APP
Chemistry Iron is extracted from Cinnabar Haematite Dolomite Bauxite Cinnabar Haematite Dolomite Bauxite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Galena is a mineral of Lead Gold Iron Calcium Lead Gold Iron Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas which is mainly responsible for the green house effect is: Oxygen Carbon monoxide Carbon dioxide Ozone Oxygen Carbon monoxide Carbon dioxide Ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry Copper substances when exposed to air gains a green coating due to the formation of: CuCO3 Cu(OH)2 CuSO4 Cu(NO3)2 CuO CuCO3 Cu(OH)2 CuSO4 Cu(NO3)2 CuO ANSWER DOWNLOAD EXAMIANS APP
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