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MCQEasyJEE 2023Complex Formation & Catalytic Properties

JEE Chemistry 2023 Question with Solution

Given below are two statements:

Statement I: Nickel is being used as the catalyst for producing syn gas and edible fats.

Statement II: Silicon forms both electron-rich and electron-deficient hydrides.

Choose the most appropriate answer from the options given below:

  • A

    Both the statements I and II are correct

  • B

    Statement I is incorrect but statement II is correct

  • C

    Both the statements I and II are incorrect

  • D

    Statement I is correct but statement II is incorrect

Answer

Correct answer:A

Step-by-step solution

Standard Method

Given: Two statements about Nickel and Silicon are to be checked.

Find: Which option correctly identifies the true and false statements.

  • Statement I: Nickel is widely used as a catalyst in hydrogenation reactions for producing edible fats such as margarine, and it is also used in processes related to the production of synthesis gas.
  • Statement II: This statement is incorrect. Hydrides of silicon such as SiH4\text{SiH}_4 are electron-precise, not electron-rich and not electron-deficient.

Therefore, Statement I is correct but Statement II is incorrect.

The correct option is D.

Common mistakes

  • Assuming that all hydrides of heavier group 1414 elements behave like electron-deficient boranes is incorrect. Silicon hydrides such as SiH4\text{SiH}_4 are electron-precise. Classify the hydride by electron count instead.

  • Marking both statements true because Nickel is a familiar catalyst leads to error. Check each statement independently; a correct first statement does not make the second one correct.

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