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The role of 'Molybdenum' in Uaber's synt...

The role of 'Molybdenum' in Uaber's synthesis is

A

A positive catalyst

B

A negative catalyst

C

Poison for catalyst

D

Promoter for catalyst

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-PERIODIC CLASSIFICATION-OBJECTIVE EXERCISE - 1 (BLOCK AND TYPES OF ELEMENTS)
  1. Metal used as catalyst in the hydrogenation of vegetable oils

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  2. The 4 F level is successively filled up in

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  3. The role of 'Molybdenum' in Uaber's synthesis is

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  4. The period in which s-block, p-block and d- block elements are present

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  5. Elements of p-block are

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  6. The following ion is colourless in aqueous solution ?

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  7. Which of the following electronic configuration corresponds to an iner...

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  8. The rare gas that is most abundant in the atmosphere is

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  9. In lanthanides, the differentiating electron enters into

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  10. Which is not a transition metal?

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  11. (A): Zinc is not considered as a transition element (R): Zn or Zn^(+...

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  12. The general electronic configuration (n - 1)d^3ns^2? indicates that th...

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  13. Which one of the following pairs of ions have the same electronic conf...

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  14. The electronic configuration 1s^2 2s^6 2p^6 3s^2 3p^4 represents

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  15. What is wrong about transition metals?

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  16. Which of the following is a rare earth element?

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  17. Variable valency is exhibited by

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  18. Which one of the following is correct about stability of the given ion...

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  19. The transition element among the following is

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  20. In the sixth period, the orbitals being filled with electrons are

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