When iron is exposed to moist air, a reddish brown coating of hydrated Iron (III) Oxide (Fe2O3) is deposited on its surface. This reddish brown coating is called
Which of the following solutions is alkaline?
Which one of the following is commonly used as an indicator to measure the exact pH?
Which of the following classifications is based on atomic numbers?
What is the atomicity of Phosphorous?
Aluminium oxide is ___ in nature.
The process of transferring of charge from a charged object to the earth is called ______________.
Generally covalently bonded molecules ______.
I. have high boiling and melting point as compare to ionically bonded molecules
II. poor conductors of electricity
III. have weak intermolecular force
Match the following items of column A with column B.
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