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.
What will be the compound if two valencies of carbonyl group are satisfied by two alkyl groups?
Aldehyde
Ketone
Acid
Acidic anhydride
Which of the following compounds is oxidised to prepare methyl ethyl ketone?
2-propanol
1-butanol
2-butanol
t-nutyl alcohol
Which pair of the following carbonyl compounds can be diifferentiated by I2/NaOH?
C6H5-CHO and C6H5-CO-CH2-CH3
C6H5-CO-CH3 and CH3-CH2-CO-CH3
CH3-CH2-CO-CH2-CH3 and C6H5COCH2CH3
C6H5-CO-CH(CH3)-CH3 and C6H5-CO-CH3
In the reaction sequence,
CH3CN . The products [A] and [B] are
(CH3)3COH, (CH3)2C=CH2
(CH3)2CHOH, CH3CH=CH2
CH3COCH3, CH3CH=CH2
In the reaction,
CH3CHO D
The end product D is
crotonic acid
lactic acid
malonic acid
tartaric acid