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 Raman spectra Absorption spectra Fluorescence Emission spectra Raman spectra Absorption spectra Fluorescence Emission spectra ANSWER DOWNLOAD EXAMIANS APP
Chemistry For extinguishing fire, we use Marsh gas Hydrogen Carbon Dioxide Carbon Monoxide Marsh gas Hydrogen Carbon Dioxide Carbon Monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following gases is mixed with oxygen for breathing by divers in aqua lungs? Nitrogen Methane Hydrogen Helium Nitrogen Methane Hydrogen Helium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas causing acid rain in an industrial area is Carbon dioxide Carbon monoxide Sulphur dioxide Methane Carbon dioxide Carbon monoxide Sulphur dioxide Methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal does not give H2 on treatment with dilute HCL is Zn Ca Fe Ag Zn Ca Fe Ag ANSWER DOWNLOAD EXAMIANS APP
Chemistry The absolute temperature of a gas is doubled and the pressure is reduced to half, the volume of the gas Will be reduced to half Will increase four-fold Remains unchanged Will be doubled Will be reduced to half Will increase four-fold Remains unchanged Will be doubled ANSWER DOWNLOAD EXAMIANS APP
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