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In Ziegler-Natta polymerisation of ehtyl...

In Ziegler-Natta polymerisation of ehtylene , the active species are :

A

`AlCl_(3)`

B

`EtA`

C

`Ch_(2)CH_(2)`

D

`Ti^(3+)`

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The correct Answer is:
D
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OP TANDON-ADSORPTION AND CATALYSIS-OBJECTIVE QUESTIONS (LEVEL-A)
  1. the heat evolved in physisorption lies in the range (in kJ/mol) of :

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  2. In physical adsorption, the forces associated are :

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  3. In Ziegler-Natta polymerisation of ehtylene , the active species are :

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  4. ZSM-5 is used to conver :

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  5. A catalyst increases rate of reaction by

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  6. The role of a catalyst in a reversble reaction is to

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  7. A catalyst in a reversible reaction is to :

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  8. Which of the following is/are not possible in case of autocatalysis?

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  9. Which of the following statements is false ?

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  10. The rate of physisorption increases with

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  11. Which is not correct for physical adsorption?

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  12. According to the adsorption theory of catalysis the speed of the react...

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  13. The chemical equlibrium of a reversible reaction is not influenced by ...

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  14. Identify the gas which is readily adsorbed by activated charcoal?

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  15. Which of the following belong(s) to the family of enzymes?

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  16. Which statement about zeolite is false ?

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  17. Adsorpton of gases on solid surface is generally exothermic because :

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  18. Identify the correct statement regarding enzymes.

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  19. The extent of adsorption of a gas on a solid depends on the :

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  20. Which of the following is true in respect of chemical adsorption?

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