NEET Chemistry: The d and f Block Elements — MCQ Test 1

Q6. What happens when K 2 Cr 2 O 7 is treated with an alkali?

Q7. Which of the following represents the preparation of KMnO 4 from pyrolusite ore?

Q8. Which of the following is NOT a consequence of lanthanoid contraction?

Q9. Which actinoid is most commonly used in nuclear reactors?

Q10. Which of the following is NOT true about lanthanoid contraction?

NEET Chemistry — The d and f Block Elements

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What is the lanthanoid contraction?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Chemistry preparation, focusing specifically on the chapter The d and f Block Elements. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Lanthanoid, Contraction, Catalyst, Hydrogenation, Vegetable, and Following.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. What is the lanthanoid contraction?

  • A. Increase in atomic size across the series
  • B. Decrease in density of lanthanoids
  • C. Decrease in atomic/ionic radii across the series
  • D. Increase in metallic character

Q2. Which catalyst is used in the hydrogenation of vegetable oils?

  • A. V 2 O 5
  • B. Ni
  • C. Fe
  • D. Pt

Q3. Which of the following statements about actinoids is correct?

  • A. They show only +3 oxidation state
  • B. They are non-radioactive
  • C. They exhibit variable oxidation states
  • D. They do not form complexes

Q4. Which of the following reactions represents the preparation of K 2 Cr 2 O 7 from chromite ore?

  • A. Oxidation of chromite with Na 2 CO 3 in air
  • B. Reduction of chromite with carbon
  • C. Electrolysis of chromite
  • D. Heating chromite with HCl

Q5. Which of the following statements about lanthanoids is INCORRECT?

  • A. They are silvery-white soft metals
  • B. They primarily exhibit +2 oxidation state
  • C. They show lanthanoid contraction
  • D. They form colored ions

+ 5 more questions in the actual test

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