All India Exam Question
The hardest substance available on earth is
Bromine is a
Which of the gas is not known as green house gas?
Quartz crystals normally used in quartz clocks etc. is chemically
Washing soda is the common name for
The gas usually filled in the electric bulb is
Chemical formula for water is
Which of the following metals forms an amalgam with other metals?
Which of the following is used in pencils?
Chlorophyll is a naturally occurring chelate compound in which central metal is