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
The hydroxyl compound that gives a precipitate immediately when treated with concentrated hydrochloric acid and anhydrous zinc chloride is
3-methyl-2-butanol
3-methyl-1-butanol
1-butanol
2-methyl-2-butanol
Which set of term correctly identifies the carbohydrate show?
1.Pentose
2. Hexose
3. Aldose
4. Ketose
5. Pyranose
6. Furanose
1, 3 and 6
1, 3, and 5
2, 3 and 5
2, 3 and 6
Which of the following is a better reducing agent for the following reduction ?
RCOOH → RCH2OH
SnCl2/HCl
NaBH4/ ether
B2H6/ H3O+
H2/ Pd
The IUPAC name of the compound is :
HOOC–CH2–CH(COOH)–CH2-CH2-COOH
2(carboxymethyl)-pentane-1, 5-dioic acid
3-carboxyhexane-1, 6-dioic acid
butane-1, 2, 4-tricarboxylic acid
4-carboxyhexane-1, 6-dioic acid
The reagent with which both acetaldehyde and acetophenone react easily are :
2, 4-dinitrophenylhydrazine
Fehling's solution
Schiff's reagent
Tollen's reagent
Aniline first reacts with acetyl chloride producing compound' A'. 'A' reacts with nitric acid/ sulphuric acid mixture and produces compound 'B', which hydrolyses to compound 'C'. What is the identity of 'C' ?
Acetanilide
p-nitroacetanilide
p-nitroaniline
Aniline