Chemistry The major constituent of air is hydrogen nitrogen carbon dioxide oxygen hydrogen nitrogen carbon dioxide oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The atmospheric gas that is mainly responsible for Green House effect : Carbondioxide Oxygen Nitrogen Ozone Carbondioxide Oxygen Nitrogen Ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry The purest form of water is Tap water Distilled water Ground water Rain water Tap water Distilled water Ground water Rain water ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main active constituent of tea and coffee is nicotine aspirin caffeine chlorophyll nicotine aspirin caffeine chlorophyll ANSWER DOWNLOAD EXAMIANS APP
Chemistry The smog is essentially caused by the presence of O3 and N2 Oxides of N and S O2 and O3 O2 and N2 O3 and N2 Oxides of N and S O2 and O3 O2 and N2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Acid rain' is caused due to air - pollution by Nitrous oxide and sulphur dioxide Carbon dioxide Methane Carbon monoxide Nitrous oxide and sulphur dioxide Carbon dioxide Methane Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS