Select the correct option based on statements below:
Assertion (A): | The α -hydrogen atom in carbonyl compounds is less acidic. |
Reason (R): | The anion formed after the loss of the α -hydrogen atom is resonance stabilized. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | (A) is false but (R) is true. |
Select the correct option based on statements below:
Assertion (A): | Aromatic aldehydes and formaldehydes undergo the Cannizzaro reaction. |
Reason (R): | Aromatic aldehydes are almost as reactive as formaldehyde. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | (A) is false but (R) is true. |
Select the correct option based on statements below:
Assertion (A): | Aldehydes and ketones both react with Tollen’s reagent to form a silver mirror. |
Reason (R): | Both aldehydes and ketones contain a carbonyl group. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | (A) is false but (R) is true. |
Select the correct option based on statements below:
Assertion (A): | Compounds containing —CHO group are easily oxidised to corresponding carboxylic acids. |
Reason (R): | Carboxylic acids can be reduced to alcohol by treatment with LiAlH4. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | (A) is false but (R) is true. |
Select the correct option based on the statements below:
Assertion (A): | The geometry of formaldehyde molecule is planar. |
Reason (R): | Formaldehyde molecule contains sp2 hybridized carbon atom. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Match the example in Column I with the name of the reaction in Column II.
Column l (Example) |
Column ll (Reaction) |
A. |
1. Friedel-Crafts acylation |
B. |
2. HVZ reaction |
C. \(\small{2 \mathrm{CH}_{3} \mathrm{CHO} \stackrel{\mathrm{NaOH}}{\longrightarrow} \mathrm{CH}_{3}-\mathrm{CH}=\mathrm{CHCHO}}\) | 3. Aldol condensation |
D. |
4. Rosenmund Reaction |
A | B | C | D | |
1. | 2 | 3 | 4 | 1 |
2. | 3 | 1 | 4 | 2 |
3. | 3 | 4 | 1 | 2 |
4. | 4 | 1 | 3 | 2 |
Match the reactions given in Column I with the suitable reagents given in Column II.
Column l (Reactions) |
Column ll (Reagents) |
A. Benzophenone → Diphenylmethane | 1. LiAlH4 |
B. Benzaldehyde → 1-Phenylethanol | 2. DlBAL-H |
C. Cyclohexanone → Cyclohexanol | 3. Zn(Hg)/Conc.HCl |
D. Phenyl benzoate → Benzaldehyde | 4. CH3MgBr |
Codes
A | B | C | D | |
1. | 2 | 3 | 4 | 1 |
2. | 3 | 4 | 1 | 2 |
3. | 1 | 4 | 3 | 2 |
4. | 4 | 3 | 2 | 1 |
Match the acids given in Column I with their correct IUPAC names given in Column II and mark the appropriate option:
Column l (Acids) |
Column ll (IUPAC names) |
A. Phthalic acid | 1. Hexane-1,6-dioic acid |
B. Glutaric acid | 2. Benzene-1,2-dicarboxylic acid |
C. Succinic acid | 3. Pentane-1,5-dioic acid |
D. Adipic acid | 4. Butane-1,4-dioic acid |
Codes
A | B | C | D | |
1. | 2 | 3 | 4 | 1 |
2. | 3 | 1 | 4 | 2 |
3. | 1 | 4 | 3 | 2 |
4. | 4 | 3 | 2 | 1 |
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 |
Benzophenone can be obtained by:
a. Benzoyl chloride + benzene
b. Benzoyl chloride + diphenyl cadmium
c. Benzoyl chloride + phenyl magnesium chloride
d. Benzene + carbon monoxide
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)