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NEET levelSingle correct optionDifficulty 1 of 3df010

A Ziegler-Natta catalyst, used for low-pressure polymerisation of ethene, is a combination of

A $V X_{2} O X_{5}$ and $SO X_{2}$
B $PdCl X_{2}$ and $CuCl X_{2}$
CFe and Mo
D $TiCl X_{4}$ and $Al (C X_{2} H X_{5}) X_{3}$

Answer: D

The Ziegler-Natta system is

TiCl X_{4}

with triethylaluminium. The other pairs belong to the contact process, the Haber process and the Wacker process respectively.

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