Which of the following shortcut key is used for print

_________is a formula for rust.

How many planets are terrestrial planets?

Modern periodic table has ______ groups and ______ periods.

Who among the following is known for the discovery of atomic-bomb?

Magnesium oxide (MgO) + Water (H2O) = ?

Which of the following is a synthetic polymer?

What is the colour of the outer zone of complete combustion of candle flame?

Acid reacts with metal to form salt and liberates _________ gas.

Bleaching powder is represented as ______.

The rate of a reaction depends on: