............ element is represented by the given symbol.
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Chromite is an ore/mineral of
What is contained in Chlorophyll ?
Name the gas used in preparation of bleaching powder
The oceanic crust mainly consists of silica and __________.
Which of the following is most important for absorption of heat radiated from the Sun as well as from the Earth?
What is nature of pH of Milk?
Covalent Bond is also called _________.