$A s s e r t i o n - --------- -$ (A): The boiling point of HF is higher than that of $H_{2} O$
$R e a s o n - ------- -$ (R): The hydrogen bond strength in HF is lower than that in $H_{2} O$

A and R are true and R is the correct explanation of A

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A and R are true and R is not the correct explanation of A

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A is true, R is false

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A is false but R is true

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Solution

The correct option is D
A is false but R is true

Due to stronger hydrogen bonding in water, it has a higher boilind point.

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Similar questions

$A s s e r t i o n - --------- -$ (A): The boiling point of HF is higher than that of $H_{2} O$
$R e a s o n - ------- -$ (R): The hydrogen bond strength in HF is lower than that in $H_{2} O$

Q. Assertion :Boiling point of

H F

is lesser than water. Reason: Hydrogen bonding in water is weaker than

H F

$Assertion - --------- -$ (A): The boiling point of HF is higher than that of $H_{2} O$ .
$Reason - ------ -$ (R): The hydrogen bond strength in HF is lower than that in $H_{2} O$ .

Question 04

Hydrogen bonds are formed in many compounds e.g., $H_{2} O, H F, N H_{3}$ . The boiling point of such compounds depends to a extent on the strength of hydrogen bond and the number of hydrogen bonds. The correct decreasing order of the boiling points above compounds is

(a) $H F > H_{2} O > N H_{3}$

(b) $H_{2} O > H F > N H_{3}$

(d) $N H_{3} > H_{2} O > H F$

H_{2} O

has a higher boiling point than

H F

because:

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Assertion––––––––––– (A): The boiling point of HF is higher than that of H2O Reason––––––––– (R): The hydrogen bond strength in HF is lower than that in H2O

The correct option is D A is false but R is true Due to stronger hydrogen bonding in water, it has a higher boilind point.

$A s s e r t i o n - --------- -$ (A): The boiling point of HF is higher than that of $H_{2} O$
$R e a s o n - ------- -$ (R): The hydrogen bond strength in HF is lower than that in $H_{2} O$

The correct option is D
A is false but R is true

Due to stronger hydrogen bonding in water, it has a higher boilind point.