Correct order of electron affinities of halogens is
F> Cl> Br> I
I> Br> Cl> F
Cl> F>I>Br
Cl>F>Br>I
If NO2(N2O4) is dissolved in NaOH, we get solution of
NaNO2
NaNO3
mixture of NaNO2 and NaNO3
NaNO4
Which of the following is strongest base?
Perkin's reaction
Knoevenagel reaction
Reformatsky reaction
Benzoin condensation
Which of the following will not respond to iodoform test?
Ethyl alcohol
Propanol-2
Propanol-1
Ethanal
Which of the following acids will have lowest value of pKa?
CH3CH2COOH
CH3CHBrCOOH
CH3CHFCOOH
FCH2CH2COOH
A.
CH3CH2COOH
Strongerthe acid, higher the Ka value and lower the pKa value. The order of acidity of given acids is as
CH3CHFCOOH > CH3CHBrCOOH> FCH2CH2COOH > CH3CH2COOH
Since CH3CH2COOH is the weakest acid among the given, its pKa value will be highest.
Which of the following does not contain chiral carbon atom?
Lactic acid
2-chlorobutanoic acid
Tartaric acid
Succinic acid
What will be the compound if two valencies of carbonyl group are satisfied by two alkyl groups?
Aldehyde
Ketone
Acid
Acidic anhydride