J % M, P * J, M % Q, R * P then find the minimum distance between P and M (approx.)?
What is the colour of the outer zone of complete combustion of candle flame?
Atomic number =
Absolute alcohol is prepared from rectified spirit by using the following process :
Which of the following statement is/are true?
I. Metal oxides are acidic in nature
II. Non-metallic oxides are basic in nature
The word “acid” comes from a ________ word.
The chemical name of ______ is sodium hydrogen carbonate.
_________is a formula for rust.
What is the common name of sodium carbonate?
The SI unit of acceleration is_________.
The insecticide gammexane is chemically known as: