Chemistry In upper layer of atmosphere ozone is formed by The action of nitrogen on oxygen in atmosphere The combination of oxygen molecules The action of ultraviolet rays on oxygen Subjecting oxygen to high pressure The action of nitrogen on oxygen in atmosphere The combination of oxygen molecules The action of ultraviolet rays on oxygen Subjecting oxygen to high pressure ANSWER DOWNLOAD EXAMIANS APP
Chemistry When ice cubes are made, the entropy of water Increases Decreases May either increase or decrease depending on the process used Does not change Increases Decreases May either increase or decrease depending on the process used Does not change ANSWER DOWNLOAD EXAMIANS APP
Chemistry Fertiliser having high nitrogen content is : Ammonium nitrate Ammonium sulphate Calcium citrate Urea Ammonium nitrate Ammonium sulphate Calcium citrate Urea ANSWER DOWNLOAD EXAMIANS APP
Chemistry The nucleus of an atom consists of electrons and protons All of these electrons and neutrons protons and neutrons electrons and protons All of these electrons and neutrons protons and neutrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry The smog is essentially caused by the presence of Oxides of N and S O2 and N2 O3 and N2 O2 and O3 Oxides of N and S O2 and N2 O3 and N2 O2 and O3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following statements is not correct? Vulcanisation of rubber makes it Strong and hard Chemical resistant Soft and flexible Withstand higher temperatures Strong and hard Chemical resistant Soft and flexible Withstand higher temperatures ANSWER DOWNLOAD EXAMIANS APP
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