MCQ
In iodine charge transfer test the color of ether compound formed is:
- ABlue
- BPale yello
- ✓Brown
- DDark red
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$E^o_{Cl_2/Cl^-} = 1.36\,V,$ $E^o_{Cr^{3+}/Cr}= -0.74\,V,$
$E^o_{Cr_2/O_7^{2-}/Cr^{3+}}=1.33\,V,$ $E^o_{MnO^-_4/Mn^{2+}} = 1.51\,V$
Among the following, the strongest reducing agent is
Statement $I:$ The boiling points of aldehydes and ketones are higher than hydrocarbons of comparable molecular masses because of weak molecular association in aldehydes and ketones due to dipole - dipole interactions.
Statement $II:$ The boiling points of aldehydes and ketones are lower than the alcohols of similar molecular masses due to the absence of $H$-bonding.
In the light of the above statements, choose the most appropriate answer from the options given below :
Reason : Lower the activation energy, faster is the reaction.