Chemistry Which mineral is the ore of aluminium ? Magnetite Bauxite Siderite Haematite Magnetite Bauxite Siderite Haematite ANSWER DOWNLOAD EXAMIANS APP
Chemistry The acid rain destroys vegetations because it contains Sulphuric acid Carbon monoxide Nitric acid Ozone Sulphuric acid Carbon monoxide Nitric acid Ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry Global warming is mainly due to accumulation of Oxides of sulphur Carbon dioxide Carbon monoxide Oxides of nitrogen Oxides of sulphur Carbon dioxide Carbon monoxide Oxides of nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which metal does not undergo corrosion due to the formation of oxide layer? Zinc Iron Aluminium Copper Zinc Iron Aluminium Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ? 6 18 Zero 12 6 18 Zero 12 ANSWER DOWNLOAD EXAMIANS APP
Chemistry When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to NO2 SO3 N2O SO2 NO2 SO3 N2O SO2 ANSWER DOWNLOAD EXAMIANS APP
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