Which one of the following statements about alkaline earth metals is NOT true ?
[amp_mcq option1=”Strontium salts burn with a red flame” option2=”Barium metal is used in medicine to examine the alimentary canal of a patient by X-ray” option3=”Green plants need magnesium in order to make the chlorophyll that trap the energy from sunlight in photosynthesis” option4=”Red colour of gemstone Ruby is due to the element beryllium present in it” correct=”option2″]
This question was previously asked in
UPSC CAPF – 2020