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12th Grade > Chemistry

ALDEHYDES AND KETONES MCQs

Total Questions : 30 | Page 3 of 3 pages
Question 21. In a set of reaction acetic acid yields a product [D]. The structure of [D] would be:
CH3CH2COOHSOCl2−−−−→AC6H6−−−−−−→Anhy.AlCl3BHCN−−−→CHOH−−−→D
 Discuss Question
Answer: Option A. ->
:
D
In A Set Of Reaction Acetic Acid Yields A Product [D]. The S...
Question 22. In a set of reactions propionic acid yielded a compound D. CH3CH2COOHSOCl2−−−−→BNH3−−−→CKOH−−−→Br2D The structure of D would be:
  1.    CH3CH2NHCH3
  2.    CH3CH2NH2
  3.    CH3CH2CH2NH2
  4.    CH3CH2CONH2
 Discuss Question
Answer: Option B. -> CH3CH2NH2
:
B
In A Set Of Reactions Propionic Acid Yielded A Compound D. C...
Question 23. CH3CHO+H2NOH−→CH3CH=N−OH The above reaction occurs at:
  1.    pH = 1 
  2.    pH = 4.5
  3.    any value of pH
  4.    pH = 12
 Discuss Question
Answer: Option B. -> pH = 4.5
:
B
In highly acidic medium, NH2OH forms salt with the acid molecules and loses its ability to act as a nucloephile.
Question 24. Ethyl esterEthyl Ester. The Product P Will Be  . The product P will be
 
 
 Discuss Question
Answer: Option B. -> pH = 4.5
:
A
Ethyl Ester. The Product P Will Be  
Question 25. CH3CHO+CH2(COOH)2△−−−−→PyridineX; X Is :CH3CHO+CH2(COOH)2△−−−−→PyridineX; X is :
  1.    CH3COOH
  2.    C2H5COOH
  3.    CH3CHCHCOOH
  4.    (COOH)CHCH(COOH)
 Discuss Question
Answer: Option C. -> CH3CHCHCOOH
:
C
CH3CHO+CH2(COOH)2△−−−−→PyridineX; X Is :
Question 26. Reaction between diethyl cadmium and acetyl chloride leads to the formation of
  1.    Dimethyl ketone
  2.    Ethyl methyl ketone
  3.    Diethyl ketone
  4.    Acetaldehyde
 Discuss Question
Answer: Option B. -> Ethyl methyl ketone
:
B
Reaction Between Diethyl Cadmium And Acetyl Chloride Leads T...
Question 27. Identify Z in the series, CH3CHOMnO−4−−−−−−→Dil.H2SO4 X SOCl2−−−−→ Y CH3COONa−−−−−−−−→Heat Z:
  1.    CH3.CO.CH2COONa
  2.    (CH3CO)2O
  3.    CH2Cl.CO.O.COCH3
  4.    CHCl2.CO.O.COCH3
 Discuss Question
Answer: Option B. -> (CH3CO)2O
:
B
H3C−CHOMnO−4−−−−−→dil.H2SO4H3C−COOHSOCl2−−−−→H3C−COClCH3COONa−−−−−−−−→Identify Z In The Series, CH3CHOMnO−4−−−−−−→...
Question 28. Identify the correct order of boiling points of the following compounds.
1. CH3(CH2)2CH2OH
2. CH3(CH2)2CHO
3. CH3(CH2)2COOH
  1.    1>2>3
  2.    3>1>2
  3.    1>3>2
  4.    3>2>1
 Discuss Question
Answer: Option B. -> 3>1>2
:
B
Greater the tendency for h-bonding, higher is the B.P.
Question 29. The increasing order of the rate of HCN addition to compounds A-D is:
(A) HCHO (B) CH3COCH3
(C) PhCOCH3 (D) PhCOPh
  1.    A
  2.    D
  3.    D
  4.    C
 Discuss Question
Answer: Option C. -> D
:
C
Due to steric hindrance
Question 30. Identify X in the reaction below :
Identify X In The Reaction Below :
  1.    alkane nitrile
  2.    alkyl isonitrile
  3.    aldoxime
  4.    alkyl halide
 Discuss Question
Answer: Option A. -> alkane nitrile
:
A
RCOOHH3O⊕←−−−RCN[H]−−→RCH2NH2

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