MCQ practice · SSC Chemistry Board questions · Chapter 8: Chemistry and Energy
What is the bond energy of C − H in kilojoules per mole?
Think it through first, then pick an option.
- a 326
- b 344
- c 391
- d 414
Answer and explanation
Correct answer: d 414
By Table 8.01 the C-H bond energy is 414 kJ/mol.
Why the other options are wrong
- a 326: 326 is Table 8.01's C-Cl value, easy to mix up as they sit close; C-H is 414.
- b 344: 344 is Table 8.01's C-C value, easy to mix up as they sit close; C-H is 414.
- c 391: 391 is Table 8.01's N-H value, easy to mix up as they sit close; C-H is 414.
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