General Knowledge - General Science

Exercise : General Science - Elements and Metals
11.
Bromine is a
black solid
red liquid
colourless gas
highly inflammable gas
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
The hardest substance available on earth is
Gold
Iron
Diamond
Platinum
Answer: Option
Explanation:
No answer description is available. Let's discuss.

13.
The variety of coal in which the deposit contains recognisable traces of the original plant material is
bitumen
anthracite
lignite
peat
Answer: Option
Explanation:
No answer description is available. Let's discuss.

14.
Tetraethyl lead is used as
pain killer
fire extinguisher
mosquito repellent
petrol additive
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.
Which of the following is used as a lubricant?
Graphite
Silica
Iron Oxide
Diamond
Answer: Option
Explanation:
No answer description is available. Let's discuss.