Choose the weakest add among the following

• (CH₃)₂CH—COOH

• F₃C—COOH

• F—CH₂—COOH

• CH₃—COOH

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

Which of the following is the least basic amine?

• Ethylamine

• Diethylamine

• Aniline

• Benzylamine

Which of the following bases is not present in DNA?

• Uracil

• Adenine

• Thymine

• Guanine

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

49.

Cetyltrimethyl ammonium bromide is a popular

• anionic detergent

• cationic detergent

• non-ionic detergent

• sweetener