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General Knowledge - General Science

@ : Home > General Knowledge > General Science > Elements and Metals

Exercise

"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe."
- Albert Einstein
26. 

The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of
A. bromineB. fluorine
C. chlorineD. sulphur
27. 

The element common to all acids is
A. hydrogenB. carbon
C. sulphurD. oxygen
28. 

Non stick cooking utensils are coated with
A. Teflon
B. PVC
C. black paint
D. polystyrene
29. 

Monazite is an ore of
A. titaniumB. zirconium
C. ironD. thorium
30. 

Carbon, diamond and graphite are together called
A. allotropesB. isomers
C. isomorphsD. isotopes

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