Chemistry The material used in solar cells contains Thallium Silicon Tin Caesium Thallium Silicon Tin Caesium ANSWER DOWNLOAD EXAMIANS APP
Chemistry In sugar solution, Sugar is solvent, water is solute Both are solutes Both are solvents Sugar is solute, water is solvent Sugar is solvent, water is solute Both are solutes Both are solvents Sugar is solute, water is solvent ANSWER DOWNLOAD EXAMIANS APP
Chemistry When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to SO2 N2O NO2 SO3 SO2 N2O NO2 SO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The heaviest naturally occurring element is: Mercury Thorium Uranium Polonium Mercury Thorium Uranium Polonium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Earth’s atmosphere is an envelope of gases extending to a height of 200 km 300 km 150 km 100 km 200 km 300 km 150 km 100 km ANSWER DOWNLOAD EXAMIANS APP
Chemistry Where does the oxygen that keeps us alive come from? Oxides of minerals Water Carbon dioxide Carbonates absorbed from soil Oxides of minerals Water Carbon dioxide Carbonates absorbed from soil ANSWER DOWNLOAD EXAMIANS APP
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