Multiple Choice QuestionsChoose the weakest add among the following
(CH3)2CH—COOH
F3C—COOH
F—CH2—COOH
CH3—COOH
A.
(CH3)2CH—COOH
The acidity of carboxylic acids depends upon the nature of the aikyl group attached to -COOH. The presence of an electron-withdrawing (-I effect) group weakens the O-H bond in the acid and increases the acidity, while the presence of an electron releasing ( + I effect) group strengthens the O-H bond of acid and thus, decreases the acidity. Thus, the weakest acid is,
CH3—(CH)CH3—COOH
(2-Methylpropanoic acid)
Aldehydes that do not undergo aldol condensation are
1.propanal
2.Trichloroethane
3. methanal
4. benzaldehyde
3 and 4 only
1,2and 3 only
3 and 4 only
2,3 and 4 only
Which compound among the following give/s positive iodoform test?
1. Ethanol
2. Ethanal
3. 1-butanol
4. 2-butanol
1,2 and 4
1, 3 and 4
1, 2 and 3
1 and 2
Amine that cannot be prepared by Gabriel phthalimide synthesis is
aniline
benzylamine
methylamine
iso-butylamine
Lactose is made of
α-D-glucose only
α-D-glucose and β-D-glucose
α-D-galactose and β-D-glucose
β-D-galactose and β-D-glucose
The artificial sweetener containing chlorine that has the appearance and taste as that of sugar and stable at cooking temperature is
aspartame
saccharin
sucrolose
alitame
Cetyltrimethyl ammonium bromide is a popular
anionic detergent
cationic detergent
non-ionic detergent
sweetener
Switch
