Which form of sulphur is the most stable at room temperature ?

Question: P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as
[A].

bakelite

[B].

neoprene

[C].

teflon

[D].

nylon-66

Answer: Option C

Explanation:

No answer description available for this question.

Question: Iron ore hametite is concentrated using
[A].

electro magnetic separation mainly.

[B].

gravity separation.

[C].

froth floatation.

[D].

roasting.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is about __________ °C.
[A].

-83

[B].

-183

[C].

-196

[D].

-218

Answer: Option B

Explanation:

No answer description available for this question.