What are Aldehydes ?
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........... compound is used as a drying agent.
Which one of the following is an ohmic conductor?
Bauxite is an ore/mineral of
Which of the following is applied on the top of the matchsticks?
____ is the most electropositive and ___ is the most electronegative element of the third period of modern periodic table.
Activated Charcoal is used to remove colouring matter from pure substances by_______
What is contained in Chlorophyll ?