Q.1.
Which of the following reactions can produce R-CO-Ar?
-
20%
a) R + CrO3 →
-
80%
b) COCl + RMgX →
-
0%
c)
-
0%
d)
Q.2.
Which structural unit is possessed by aldehyde and not ketone?
-
33%
a) α-H atom
-
17%
b) H-atom and carbonyl group
-
50%
c) OH and carbonyl group
-
0%
d) None of the above
Q.3.
The IUPAC name of CH3COCH(CH3)2 is .... ... [ AIEEE 2004]
-
20%
a) 4-Methyliso-propyl ketone
-
20%
b) 3-Methyl-2-butanone
-
60%
c) iso-propylmethyl ketone
-
0%
d) 2-methyl-3-butanone
Q.4.
Compound (A) C5H10O forms a phenyl hydrazone and gives negative Tollens and iodoform tests. Compound (A) on reduction gives n-pentane. Compound (A) is
-
0%
a) a primary alcohol
-
25%
b) an aldehyde
-
50%
c) a ketone
-
25%
d) a secondary alcohol
Q.5.
on Q125) Identify the product Y in the sequence
-
50%
a) (CH3)2CHOH
-
25%
b) CH3CH2OH
-
25%
c) CH3OH
-
0%
d) CH3CH2OH
Explanation
Q.6.
Stephen's reaction is reduction of
-
0%
a) acyl halide in the presence of Pd/BaSO4
-
25%
b) alkyl cyanide with LiAlH4
-
50%
c) alkyl cyanide with SnCl2 and HCl
-
25%
d) alkyl isocyanide with Na and alcohol
Explanation
Q.7.
han One Correct Answers Q127) Benzaldehyde in Clemmensen reduction form(s)
-
33%
a) methyl benzene
-
0%
b) phenyl methane
-
67%
c) toluene
-
0%
d) none of these
Q.8.
on Q128) In the given reaction X is
-
33%
a) C2H5COOH
-
33%
b) CH3COOH
-
33%
c) (COOH) - CH=CH-(COOH)
-
0%
d) CH3CH = CH - COOH
Explanation
Q.9.
on Q129) The correct order of reactivity of PhMgBr with
-
0%
a) I > II > III
-
0%
b) III > II > I
-
100%
c) II > III > I
-
0%
d) I > III > II
Q.10.
Formaldehyde is not used in
-
0%
a) adhesives
-
0%
b) bakelite
-
50%
c) tooth powders
-
50%
d) explosives
Q.11.
Which of the following will react with water? [ IIT 1998]
-
0%
a) CHCl3
-
33%
b) Cl3CCHO
-
33%
c) CCl4
-
33%
d) ClCH2CH2Cl
Explanation
Q.12.
Which of the following is correct for carbonyl compounds?
-
0%
a)
-
33%
b)
-
67%
c)
-
0%
d)
Q.13.
Treatment of acetaldehyde with ethyl magnesium bromide and subsequently hydrolysis gives
-
0%
a) 1-butanol
-
75%
b) 2-butanol
-
25%
c) 1-propanol
-
0%
d) tert-butanol
Explanation
Q.14.
Propan-2-ol on treatment with copper at 300°C forms
-
0%
a) Ethane
-
67%
b) Acetone
-
0%
c) Acetaldehyde
-
33%
d) Both a and b
Q.15.
The compound which does not give aldol condensation is ... .. [ DEC 2005]
-
0%
a) CH3CHO
-
100%
b) (CH3)3C - CHO
-
0%
c) CH3 - CH2 - CHO
-
0%
d) CH3COCH3
Q.16.
han One Correct Answer Q136) Which of the following reaction is/are used in the preparation of alcohol?
-
0%
a) C2H5Br + KOH(aq) →
-
33%
b)
-
67%
c)
-
0%
d)
Q.17.
on Q137) The above reaction is called ... ..[ Haryana CEET 1998]
-
0%
a) Perkin's reaction
-
67%
b) Reimer-Tiemann reaction
-
33%
c) Duff's reaction
-
0%
d) Gattermann reaction
Q.18.
on Q138) End product of the following sequence of reaction is
-
0%
a) CH2(COOH)2
-
67%
b)
-
0%
c)
-
33%
d)
Explanation
Q.19.
The reagent used for the separation of acetaldehyde from acetophenone is
-
0%
a) NaOH/I2
-
25%
b) C6H5NHNH2
-
50%
c) NaHSO3
-
25%
d) NH2OH
Q.20.
When vapour of iso-propyl alcohol are passed over heated copper, the major product obtained is ... ... [ Punjab CET 1998]
-
0%
a) Propylene
-
0%
b) Acetone
-
33%
c) Propane
-
67%
d) Acetyldehyde
Q.21.
Ketones are prepared by
-
0%
a) Cannizzaro's reaction
-
50%
b) Rosenmund's reduction
-
0%
c) Clemmensen's reduction
-
50%
d) Oppenauer's oxidation
Explanation
Q.22.
Acetone when saturated with dry acid gives
-
0%
a) diacetone alcohol
-
33%
b) mesityl oxide
-
0%
c) mesitylene
-
67%
d) propane
Explanation
Q.23.
han One Correct Answer Q143) Which of the following aldehydes undergo(es) aldol condensation?
-
0%
a) p-ClC6H4CHO
-
33%
b) CH3CHO
-
0%
c) C6H5CHO
-
67%
d) C6H5CH2CHO
Q.24.
Acetaldehyde undergoes self condensation in presence of aluminium ethoxide to give ethyl acetate. This reaction is called
-
0%
a) Aldol condensation
-
0%
b) Perkin reaction
-
50%
c) Tischenko's reaction
-
50%
d) Cannizaro's reaction
Explanation
Q.25.
han One Correct Answer Q145) Which has/ have acidic hydrogen?
-
33%
a) CH3C ≡ CH
-
0%
b) C6H5COCH2CN
-
33%
c) CH3COCH2COCH3
-
33%
d) CH3COCH2CN
Q.26.
When ethanal reacts with CH3MgBr and C2H5OH/ dry HCl the product formed are ....
-
33%
a) Propane and methyl acetate
-
33%
b) 2-propanol and acetal
-
0%
c) ethane and hemiacetal
-
33%
d) ethyl alcohol and 2-propanol
Explanation
Q.27.
han One Correct Answers Q147) Which of the following statements is/are correct regarding benzaldehyde?
-
0%
a) On reduction it yield phenol
-
25%
b) On oxidation it yield benzoic acid
-
50%
c) It is used in perfumary
-
25%
d) It is known as oil of bitter almonds
Q.28.
When m-chlorobenzaldehyde is treated with 50% KOH solution, the product(s) obtained is(are)
-
33%
a)
-
33%
b)
-
0%
c)
-
33%
d)
Explanation
Q.29.
Ketones (R1COR2); R1=R2=alkyl group, can be obtained in one step by
-
0%
a) Oxidation of primary alcohol
-
33%
b) Oxidation of secondary alcohols
-
33%
c) Reaction of acid halides and alcohol
-
33%
d) Hydrolysis of ester
Explanation
Q.30.
on Q150) The structure of compound B is
-
33%
a)
-
33%
b)
-
33%
c)
-
0%
d)
Explanation
