MCQ
Given below are two statements :

Statement $I :$ The boiling points of the following hydrides of group $16$ elements increases in the order -
$H _{2} O < H _{2} S < H _{2} Se < H _{2} \text { Te. }$

Statement $II :$ The boiling points of these hydrides increase with increase in molar mass.
In the light of the above statements, choose the most appropriate answer from the options given below

  • Both Statement $I$ and Statement $II$ are incorrect
  • B
    Statement $I$ is correct but Statement $II$ is incorrect
  • C
    Statement $I$ is incorrect but Statement $II$ is correct
  • D
    Both Statement $I$ and Statement $II$ are correct

Answer

Correct option: A.
Both Statement $I$ and Statement $II$ are incorrect
a
Hydrides of group $16^{\text {th }}$

$H _{2} O \,\,\,\,\,\,\,\,\,\,\,\,\,\, \underbrace{ H _{2} S \,\,\, H _{2} Se \,\,\, H _{2} Te}$

$\,\,$H-Bond $\,\,\,\,\,\,\,\,\,\,$ VMA $\propto$ mol.wt.

$\text { B.P. } \rightarrow H _{2} S < H _{2} Se < H _{2} Te < H _{2} O$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free