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camphor
sulphur
common salt
sugar
Which of the following was to be discovered first in the chromospheres of the sun
Which of the following is in liquid form at room temperature
Sodium metal is kept under
Which are the ingredients of gunmetal
From which mineral is radium obtained
What is laughing gas
Actinides are the elements with atomic numbers from
The two elements that are frequently used for making transistors are
The filament of an electric bulb is made of
Diamond is an allotropic form of