Which of the following compounds is most acidic?
The correct order of acidic strength is
Phenols are stronger acids than alcohols because the phenoxide ion left after the release of a proton is stabilised by resonance but the alkoxide ion is not. Further, the electron-withdrawing groups (-NO2) whch stabilise the phenoxide, on by dispersing the negative charge relative to phenol increase the acidic strength of phenols, whereas electron donating group (-CH3) which destabilise the phenoxide ion by intensifying the negative charge relative to phenol tend to decrease the acidity of phenols.
Phenol + CCl4 + KOH → X;
Which of the following statement is true for X?
It gives effervescence with NaHCO3
Gives silver mirror with Tollen's reagent
Does not give the red colour with FeCl3
All of the above
Which of the following compounds contain atleast one secondary alcohol?
(i), (ii), (iii), (v)
(i), (iii), (v)
(i), (ii), (iv), (vi)
(i), (ii), (iii)
In aldol addition reaction product is always
β - hydroxyketone
α, β - unsaturated aldehyde
α, β - unsaturated ketone
β - hydroxyaldehyde
IUPAC name of the following is
2, 3-diethyl butenal
2-ethyl, 3-methyl pentanal
8-methyl, 2-ethyl pentanal
2, 5 butyl butenal