P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as

Poly tetra flouro ethylene (PTFE) is known as

A

Dacron

B

Teflon

C

Bakelite

D

Celluloid

Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the

A

Hardness in water

B

Turbidity in water

C

Dissolved oxygen in water

D

Residual chlorine in water

Poly tetraflouro ethylene (P.T.F.E.) is known as

A

Bakelite

B

Teflon

C

Celluloid

D

Decron

Telfon (PTFE) is corroded by

A

Hydrochloric acid (10%)

B

Hydrochloric acid (95%)

C

Sulphuric acid

D

None of these

The repeating units of PTFE are

A

Cl₂CH = CH₃

B

F₂C = CF₂

C

F₃C = CF₃

D

FClC = CF₂

Commercially ethylene is produced from naphtha by

A

Catalytic cracking

B

Catalytic dehydrogenation

C

Pyrolysis

D

Hydrocracking

CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones.

A

10²

B

10⁵

C

10⁹

D

10¹⁵

Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?

A

AgO

B

Al₂O₃

C

ZnCl₂

D

FE₂O₃

Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at

A

1 atm & 100°C

B

5 atm & 275°C

C

100 atm & 500°C

D

50 atm & 1000°C

Tetra ethyle lead (TEL) is

A

A catalyst in burning fossil fuel

B

An antioxidant

C

A reductant

D

An antiknock compound

P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as

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