Assertion(A): Aldol condensation is usually carried out in a dilute solution of a strong base.
Reason(R): Concentrated solution of strong base involves Cannizzaro reaction.
 
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 statements.
Subtopic:  Name Reaction |
 80%
Level 1: 80%+
Hints

Consider the given two statements:
Assertion(A): Formic acid reduces Tollen's reagent.
Reason(R): Compounds containing the —CHO group reduce Tollen's reagent.
 
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
Subtopic:  Name Reaction |
 50%
Level 3: 35%-60%
Hints

Given below are two statements:
 
Assertion(A): Lower aldehydes and ketones are soluble in water, but their solubility decreases with increase in molecular mass.
Reason(R): Aldehydes and ketones can be distinguished by Tollens' test.

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 a true statement but R is false.
4. Both A and R are false statements.
Subtopic:  Aldehydes & Ketones: Preparation & Properties | Name Reaction |
 88%
Level 1: 80%+
Hints

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Given below are two statements: 
Assertion (A): Isobutanal does not give an iodoform test.
Reason (R): It does not have \(\alpha-\)hydrogen.
 
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.
Subtopic:  Name Reaction |
 59%
Level 3: 35%-60%
Hints

Assertion (A): \(~~~~~~~~~~~~O\\ ~~~~~~~~~~~~\|\\ HO-C-CH_3 \) does not undergo haloform reaction.
Reason (R): It has no \(\alpha-\)hydrogen 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.
Subtopic:  Name Reaction |
 54%
Level 3: 35%-60%
Hints

Match the chemical composition in List-I with its name in List-II.
List-I 
(Chemical Composition)
List-II 
(Reagent)
(A) Benzenesulphonyl chloride (I) Tollen's reagent
(B) Anhydrous ZnCl2 + Conc. HCl (II) Fehling A solution
(C) Ammoniacal silver nitrate (III) Hinsberg's reagent
(D) Aqueous CuSO4 solution (IV) Lucas reagent
Choose the correct answer from the options given below:
(A) (B) (C) (D)
1. (IV) (III) (I) (II)
2. (III) (IV) (I) (II)
3. (III) (IV) (II) (I)
4. (I) (II) (IV) (III)
Subtopic:  Name Reaction |
 89%
Level 1: 80%+
Hints

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Assertion(A): In crossed Cannizarro's reaction, HCHO is oxidized while C6H5CHO is reduced.
Reason(R): Nucleophile (OH-) attacks on HCHO. Hence, formaldehyde is oxidized.

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 a true statement but R is false.
4. Both A and R are false statements.
Subtopic:  Name Reaction |
 83%
Level 1: 80%+
Hints

Identify the reaction(s) which do not give n-propyl benzene as a major product:
 
A.
B.
C.
D.

Choose the correct answer from the options given below: 
1. A only 
2. A and B only 
3. C and D only 
4. D only 
Subtopic:  Name Reaction |
Level 3: 35%-60%
Hints