MCQ
Aldehydes are produced in atmosphere by
- AOxidation of secondary alcohols
- BReduction of alkenes
- ✓Reaction of oxygen atoms with hydrocarbons
- DReaction of oxygen atoms with ozone
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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
$[Figure]$ $\xrightarrow{{HBr}}$
$FeCr _{2} O _{4}+ Na _{2} CO _{3}+ O _{2} \rightarrow A + Fe _{2} O _{3}+ CO _{2}$
$A + H ^{+} \rightarrow B + H _{2} O + Na ^{+}$
