Q.

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(A)  bond angle is less than the normal tetrahedral bond angle.
(R) Lone pair-lone pair repulsion decreases bond angle.

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a

Both ‘A’ and ‘R’ are true and ‘R’ is the correct explanation of ‘A’.

b

‘A’ is false and ‘R’ is false

c

Both ‘A’ and ‘R’ are true and ‘R’ is not the correct explanation of ‘A’

d

‘A’ is true and ‘R’ is false

answer is A.

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Detailed Solution

R―O―H bond angle in alcohols is slightly less than the tetrahedral angle (109°-28′). It is due to the repulsion between the unshared electron pairs of oxygen.

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(A)  bond angle is less than the normal tetrahedral bond angle.(R) Lone pair-lone pair repulsion decreases bond angle.