Day 7: JEE Mains Chemistry

The d- and f-Block Elements. This type asked 8 times: 2021 Paper 7, 2021 Paper 15, 25 Jun 2022, 25 Jan 2023, 27 Jan 2024, 24 Jan 2025, 3 Apr 2025, 4 Apr 2025. This one: 4 Apr 2025 See all 8 of this type

Organic Chemistry - Some Basic Principles and Techniques. This type asked 8 times: 2021 Paper 16, 29 Jun 2022, 30 Jan 2023, 10 Apr 2023, 30 Jan 2024, 22 Jan 2025, 24 Jan 2025, 28 Jan 2025. This one: 28 Jan 2025 See all 8 of this type

42

The correct order of stability of following carbocations is :

1. A.
   A $>$ B $>$ C $>$ D
2. B.
   B $>$ C $>$ A $>$ D
3. C.
   C $>$ B $>$ A $>$ D
4. D.
   C $>$ A $>$ B $>$ D

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The d- and f-Block Elements. This type asked 8 times: 2021 Paper 3, 2021 Paper 5, 25 Jun 2022, 24 Jan 2023, 6 Apr 2023, 27 Jan 2024, 29 Jan 2024, 24 Jan 2025. This one: 24 Jan 2025 See all 8 of this type

Chemical Bonding and Molecular Structure. This type asked 8 times: 2021 Paper 21, 27 Jul 2022, 31 Jan 2023, 6 Apr 2023, 10 Apr 2023, 1 Feb 2024, 4 Apr 2024, 22 Jan 2025. This one: 22 Jan 2025 See all 8 of this type

Alcohols, Phenols and Ethers. This type asked 8 times: 25 Jul 2022, 29 Jan 2023, 30 Jan 2023, 6 Apr 2023, 10 Apr 2023, 13 Apr 2023, 27 Jan 2024, 9 Apr 2024. This one: 9 Apr 2024 See all 8 of this type

40

For the given compounds, the correct order of increasing $pK_{a}$ value: (A) (B) (C) (D) (E)

1. A.
   (E) $<$ (D) $<$ (C) $<$ (B) $<$ (A)
2. B.
   (D) $<$ (E) $<$ (C) $<$ (B) $<$ (A)
3. C.
   (E) $<$ (D) $<$ (B) $<$ (A) $<$ (C)
4. D.
   (B) $<$ (D) $<$ (C) $<$ (A) $<$ (E)

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