Chemistry The purest form of water in nature is River water Lake water Sea water Rain water River water Lake water Sea water Rain water ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone consists of Oxygen only Hydrogen and Carbon Oxygen and Nitrogen Oxygen and Carbon Oxygen only Hydrogen and Carbon Oxygen and Nitrogen Oxygen and Carbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy siate, they emit light, which we can observe in Emission spectra Absorption spectra Fluorescence Raman spectra Emission spectra Absorption spectra Fluorescence Raman spectra ANSWER DOWNLOAD EXAMIANS APP
Chemistry Oxygen has (+) oxidation number only in H2O (2) N2O OF2 C12O H2O (2) N2O OF2 C12O ANSWER DOWNLOAD EXAMIANS APP
Chemistry Nitrogen forms a variety of compounds in all oxidation states ranging from –3 to + 3 –3 to + 4 –3 to + 5 –3 to + 6 –3 to + 3 –3 to + 4 –3 to + 5 –3 to + 6 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The elements in the modern Periodic table are arranged according to their Mass number Atomic Weight Atomic number Neutron number Mass number Atomic Weight Atomic number Neutron number ANSWER DOWNLOAD EXAMIANS APP
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