Chemistry The smog is essentially caused by the presence of O2 and N2 O2 and O3 Oxides of N and S O3 and N2 O2 and N2 O2 and O3 Oxides of N and S O3 and N2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful Solar ultraviolet radiation Solar infrared radiation CO2 in the air SO2 in the air Solar ultraviolet radiation Solar infrared radiation CO2 in the air SO2 in the air ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of ‘Common salt’ is Sodium chloride Calcium chloride Sodium nitrate Ammonium chloride Sodium chloride Calcium chloride Sodium nitrate Ammonium chloride ANSWER DOWNLOAD EXAMIANS APP
Chemistry All isotopes of the same element have ________ Different atomic numbers and different atomic mass The same atomic number and the atomic mass The same atomic number but different atomic masses Different atomic numbers and the same atomic mass Different atomic numbers and different atomic mass The same atomic number and the atomic mass The same atomic number but different atomic masses Different atomic numbers and the same atomic mass ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used to increase the anti-knocking property of petrol ? Tetramethyl lead Triethyl lead Tetraethyl lead Trimethyl lead Tetramethyl lead Triethyl lead Tetraethyl lead Trimethyl lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is a greenhouse gas ? Nitrogen Helium Carbon dioxide Sulphur dioxide Nitrogen Helium Carbon dioxide Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
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