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ChemistryJEE Main 21 Jan 2026, Shift 2·Q14·MCQ·Easy–moderate

Chemical Bonding · Covalent bond length comparison

The correct increasing order of C – H(A), C – O(B), C == O(C) and C ≡\equiv N(D) bonds in terms of covalent bond length is:
  1. (1)A << B << C << D
  2. (2)A << D << C << B
  3. (3)D << C << B << A
  4. (4)D << C << A << B

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See the full 21 Jan 2026, Shift 2 paper