Teaching AP TET Paper I & Paper II Mock Test Series 2025 General Science Chemistry Classification of Elements and Periodicity in Properties
Which one of the following statements about alkaline earth metals is not true?
1
Strontium salts burn with a red flame
2
Barium metal is used in medicine to examine the alimentary canal of a patient by X-ray
3
Green plants need magnesium in order to make the chlorophyll that trap the energy from sunlight in photosynthesis
4
Red color of gemstone Ruby is due to the element beryllium present in it