Chemistry The depletion of Ozone layer is mainly due to Volcanic eruptions Aviation fuels Chlorofluorocarbons Radioactive rays Volcanic eruptions Aviation fuels Chlorofluorocarbons Radioactive rays ANSWER DOWNLOAD EXAMIANS APP
Chemistry The iron ore which contains 72% of iron is : Limonite Haematite Siderite Magnetite Limonite Haematite Siderite Magnetite ANSWER DOWNLOAD EXAMIANS APP
Chemistry The acid which fails to liberate carbon dioxide from sodium bicarbonate is : Acetic acid Sulphuric acid Carbonic acid Formic acid Acetic acid Sulphuric acid Carbonic acid Formic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ruby and sapphire are oxides of Copper Tin Aluminium Iron Copper Tin Aluminium Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry The nucleus of a hydrogen atom consists of 1 electron only 1 proton + 2 neutron 1 proton only 1 neutron only 1 electron only 1 proton + 2 neutron 1 proton only 1 neutron only ANSWER DOWNLOAD EXAMIANS APP
Chemistry When a bond is formed between two atoms, the energy of the system will May increase or decrease Remain the same Decrease Increase May increase or decrease Remain the same Decrease Increase ANSWER DOWNLOAD EXAMIANS APP
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