After heating, the product formed by the reaction of propanal with 2-methylpropanal in the presence of dilution NaOH is:
1. | |
2. | |
3. | Both products mentioned in options (1) and (2) |
4. | None of the above |
An organic compound (A) (molecular formula (C8H16O2) gives a carboxylic acid (B) upon hydrolysis by dilute sulphuric acid and an alcohol (C). Oxidation of(C) with chromic acid produces(B). (C) on dehydration gives but-1-ene. Compound B is:
1. | Butanoic acid | 2. | Propanoic acid |
3. | Butanol | 4. | Propanoic acid |
Phthalic acid on heating with SOCl2 gives:
1. | Phthalic anhydride | 2. | Phthalamide |
3. | Phthaloyl chloride | 4. | None of the above |
An organic compound (A) contains 69.77% carbon, 11.63% hydrogen, and rest oxygen. The molecular mass of the compound is 86. It does not reduce Tollens’ reagent but forms an addition compound with sodium hydrogen sulphite and gives a positive iodoform test. On vigorous oxidation, it gives ethanoic and propanoic acid. Compound A would be:
1. Pentan-2-one
2. Butanone
3. 3-Methylbutanone
4. Propan-2-ol
The correct sequence of increasing orders of reactivity in nucleophilic addition reaction is:
1. Butanone < Propanone < Propanal < Ethanal
2. Butanone > Propanone > Propanal > Ethanal
3. Butanone < Propanal < Propanone < Ethanal
4. Propanal < Propanone < Ethanal < Butanone
Cannizzaro’s reaction is not given by:
1. | 2. | ||
3. | HCHO | 4. | CH3CHO |
The compound below is treated with a concentrated aqueous KOH solution. The products obtained are:
1. | ![]() |
2. | ![]() |
3. | ![]() |
4. | ![]() |
What is the most suitable reagent for the below mentioned conversion?
\(\mathrm{CH_{3} — CH = CH — CH_{2} — \overset{\Large{O} \\~ ||}{C}—CH_{3} \rightarrow}\)
\(\mathrm{CH_{3} — CH = CH — CH_{2} — \overset{\Large{O} \\~ ||}{C}—OH}\)
1. Tollens' reagent
2. Benzoyl peroxide
3. \(\mathrm I_{2}\) and NaOH solution
4. Sn and NaOH solution
The conversions can be used for Clemmensen reduction are:
a. Benzaldehyde into benzyl alcohol.
b. Cyclohexanone into cyclohexane.
c. Benzoyl chloride into benzaldehyde.
d. Benzophenone into diphenyl methane.
1. | a and b | 2. | b and c |
3. | c and d | 4. | b and d |
Match the common names given in Column I with the IUPAC names given in Column II.
Column l (Common names) |
Column ll (IUPAC names) |
A. Cinnamaldehyde | 1. Pentanal |
B. Acetophenone | 2. Prop-2-enal |
C. Valeraldehyde | 3. 1-Phenylethanone |
D. Acrolein | 4. 3-Phenylprop-2-en-al |
Codes:
A | B | C | D | |
1. | 2 | 3 | 4 | 1 |
2. | 3 | 1 | 4 | 2 |
3. | 1 | 4 | 3 | 2 |
4. | 4 | 3 | 1 | 2 |