Aldehydes, Ketones & Carboxylic Acids
.JPG "Aldehydes, Ketones & Carboxylic Acids")
Time: 30 Minute
- 1.
![Identify the product Y in the following reaction sequence:
- ProProfs]( "Identify the product Y in the following reaction sequence:")
Identify the product Y in the following reaction sequence:- A.
Pentane
- B.
Cyclobutane
- C.
Cyclopentane
- D.
Cyclopentanone
- 2.Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of:
- A.
A vinyl group
- B.
An isopropyl group
- C.
An acetylene triple bond
- D.
Two ethylenic double bonds
- 3.Which of the following on heating with aqueous KOH, produces acetaldehyde:
- A.
CH3CH2Cl
- B.
CH2Cl.CH2Cl
- C.
CH3CHCl2
- D.
CH3COCl
- 4.The dipole moment is the highest for
- A.
Trans-2-butene
- B.
1, 3-dimethylbenzene
- C.
Acetophenone
- D.
Ethanol
- 5.During reduction of aldehydes with hydrazine and potassium hydroxide, the first is formation of:
- A.
R-C≡N
- B.
R-CO-NH2
- C.
R-CH=NH
- D.
R-CH=N-NH2
- 6.If the enolate ion combines with the carbonyl group of an ester, we get:
- A.
Aldol
- B.
α, β-unsaturated ester
- C.
β-ketoaldehyde
- D.
Acid
- 7.
![- ProProfs]()
- A.
![]()
- B.
![]()
- C.
![]()
- D.
![]()
- 8.Which of the following combination of aldehydes gives cross Cannizzaro reaction?
- A.
CH3CHO, HCHO
- B.
C6C5CHO, CH3CHO
- C.
C6C5CHO, HCHO
- D.
All of these
- 9.Among the following acids which has the lowest pKa value?
- A.
CH3COOH
- B.
HCOOH
- C.
(CH3)2CHCOOH
- D.
CH3CH2COOH
- 10.Which of the following compound will have the smallest pKa value?
- A.
Benzoic acid
- B.
Formic acid
- C.
Acetic acid
- D.
Phenylacetic acid
- 11.Which one of the following pairs gives effervescence with aq. NaHCO3? I. CH3COCl II. CH3COCH3 III. CH3COOCH3 IV. CH3CO.O.COCH3
- A.
I and II
- B.
I and IV
- C.
II and III
- D.
I and III
- 12.
![Consider
The correct decreasing order of their reactivity towards hydrolysis is: - ProProfs]( "Consider
The correct decreasing order of their reactivity towards hydrolysis is:")
Consider The correct decreasing order of their reactivity towards hydrolysis is:- A.
(ii) > (iv) > (i) > (iii)
- B.
(ii) > (iv) > (iii) > (i)
- C.
(i) > (ii) > (iii) > (iv)
- D.
(iv) > (ii) > (i) > (iii)
- 13.When CH2 = CH–COOH is reduced with LiAlH4, the compound obtained will be:
- A.
CH3–CH2–CHO
- B.
![]()
- C.
CH2–CH–CH2OH
- D.
CH3–CH2–COOH
- 14.Which of the following acids on heating loses a molecule of H2O to from and α, β-unsaturated acid?
- A.
CH3CHOHCOOH
- B.
HOCH2COOH
- C.
CH3CHOHCH2COOH
- D.
HOCH2CH2CH2COOH
- 15.Which of the following reagents may be used to distinguish between phenol and benzoic acid?
- A.
Tollens’ reagent
- B.
Molisch reagent
- C.
Neutral FeCl3
- D.
Aqueous NaOH
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The correct decreasing order of their reactivity towards hydrolysis is:")
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