9. Which of the following molecules has the highest boiling point? CH CH2OH CH O

Question

9. Which of the following molecules has the highest boiling point? CH CH2OH CH OCH C CH,CH CI A D CH;CH2CH E CH,CH.I Treatment of secondary alcohols with PCC (pyridinium chlorochromate) gives: A carboxylic acids. B aldehydes. 10. C ketones D chromate esters. E no reaction. 11. Which statement is true for SN2 reactions? A The rate of the reaction depends on the stability of a carbocation. B The rate of reaction depends only on the structure of the substrate. C The fastest reaction occurs with a tertiary (3') alkyl halide. D Displacement occurs with inversion of configuration. E The mechanism is a two step process 12. Which reagent can perform the deprotonation of CH.CH:OH essentially completely? A NaH B Na(s) C NaNH2 D All of the above. Only A and B above

Explanation / Answer

9. Ethanol will have higher boiling point . Because it have stronger hydrogen bonding.

10. PCC is a weak oxidiser . It oxidises primary alcohol to aldehyde and secondary alcohols to ketones

11. Option d is correct because inversion of configuration.

12. Option b is correct

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