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General Science

General Science
Tetraethyl lead is used as

Pain Killer
Fire Extinguisher
Petrol Additive
Mosquito Repellent

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General Science
Which of the following is used in pencils?

Silicon
Graphite
Charcoal
Phosphorous

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General Science
Non stick cooking utensils are coated with

PVC
Black paint
Teflon
polystyrene

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General Science
Sodium metal is kept under

Petrol
Alcohol
Kerosene
Water

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General Science
Which of the following is used as a lubricant?

Diamond
Graphite
Iron Oxide
Silica

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General Science
The percentage of oxygen present in air is approximately-

0.4
0.44
0.21
0.23

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