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Q.

(A): Water is a liquid whereas Sulphur dioxide is a gas at room temp
(R) : Molecular mass of SO2 is more than that of H2O

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a

Both (A) and (R) are true and (R) is not the correct explanation of (A)
 

b

(A) is false but (R) is true

c

Both (A) and (R) are true and (R) is the correct explanation of (A)

 

d

(A) is true but (R) is false
 

answer is B.

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Detailed Solution

  • Inter molecular Hydrogen bonding is present in H2O molecule so it exists as a liquid at 250C  with high B.p
  • Absence of Hydrogen bonding in SO2 molecule so it exist as a gas at 250

 Both (A) and (R) are true and (R) is not the correct explanation of (A)

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