General Knowledge - General Science
Exercise : General Science - Elements and Metals
- General Science - Elements and Metals
- General Science - Measurements
- General Science - Nuclear Science
- General Science - Synthetic Materials
11.
Bromine is a
12.
The hardest substance available on earth is
13.
The variety of coal in which the deposit contains recognisable traces of the original plant material is
14.
Tetraethyl lead is used as
15.
Which of the following is used as a lubricant?
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