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Hydrocarbons

JEE Main 2025 (Online) 22nd January Morning ShiftMCQMedium📈 Topic in 29% papers+4−1
Ques. 1JEE Main 2025, 22 January (Morning Shift)

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below :

  1. Both Statement I and Statement II are incorrect
  2. Statement I is incorrect but Statement II is correct
  3. Both Statement I and Statement II are correct
  4. Statement I is correct but Statement II is incorrect

Answer

(4) Statement I is correct but Statement II is incorrect

Solution

I: 2CH3C CH + 2Na 2CH3C CNa + H2 0.5 mol H2 per mol: correct

II: 4 g propyne = 440 = 0.1 mol 0.1 mol NH3 = 2240 mL, not 224 mL: incorrect

Answer: (4)

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Ques. 2JEE Main 2025, 22 January (Evening Shift)

When sec-butylcyclohexane reacts with bromine in the presence of sunlight, the major product is :

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 3JEE Main 2025, 22 January (Evening Shift)

The compound with molecular formula C6H6, which gives only one monobromo derivative and takes up four moles of hydrogen per mole for complete hydrogenation has electrons.

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