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Periodic Table and Periodicity question

2021 · 22 Jul · Shift 2 · Q1
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Periodic Table and Periodicity question

2021 · 22 Jul · Shift 2 · Q1

JEE MainChemistryPeriodic Table and PeriodicityMCQ+4 / −1
Which one of the following statements for D.I. Mendeleeff, is incorrect?
  1. A
    He authored the textbook - Principles of Chemistry
  2. B
    At the time, he proposed Periodic Table of elements structure of atom was known.
  3. C
    Element with atomic number 101 is named after him.
  4. D
    He invented accurate barometer.
View written solutionFree

Correct answer: B

  1. Check each statement about D. I. Mendeleev

    A. He authored the textbook Principles of Chemistry
    This is correct. Mendeleev wrote the famous book Principles of Chemistry.

    B. At the time, he proposed Periodic Table of elements structure of atom was known.
    This is incorrect. When Mendeleev proposed his periodic table in 1869, the internal structure of the atom was not known. Electrons, protons, and neutrons were discovered much later.

    C. Element with atomic number 101 is named after him.
    This is correct. Element 101 is Mendelevium (Md), named in his honor.

    D. He invented accurate barometer.
    This is accepted as correct in standard chemistry texts discussing Mendeleev's achievements.

  2. Identify the incorrect statement

    Hence, the incorrect statement is: B\boxed{\text{B}}B​

  3. Comparison with stored correct answer

    Stored correct answer: B
    Derived answer: B
    They match.

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