Q.1.
C2H5CHO and (CH3)2CO can be distinguished by testing with
-
9%
a) Phenyl hydrazine
-
27%
b) Hydroxylamine
-
55%
c) Fehling solution
-
9%
d) Sodium bisulphite
Q.2.
Which will form two oximes with NH2OH?
-
33%
a) H2C=O
-
22%
b) CH3COCH3
-
22%
c) CH3CH2COCH2CH3
-
22%
d) CH3CH2COCH3
Explanation
Q.3.
ion Q93) On vigorous oxidation by permanganate solution gives .... [ AIEEE 2002]
-
25%
a)
-
12%
b)
-
25%
c)
-
38%
d)
Q.4.
ion Q94) Muscone ( an explosive perfume secreted by musk deer) has the structure Its IUPAC name is
-
29%
a) methyl cyclopentadecan-3-one
-
57%
b) 3-methyl cyclopentadecanone
-
14%
c) 3-methyl cyclohexdecan-3-one
-
0%
d) 3-methyl cyclotetradecanone
Q.5.
Clemmensen's reduction of ketones is carried out in presence of
-
44%
a) Zn-Hg with conc. HCl
-
11%
b) LiAlH4 in water
-
44%
c) Glycol with KNO
-
0%
d) H2with Pd catalyst
Explanation
Q.6.
When sodium formate is heated it gives
-
14%
a) water
-
57%
b) carbon dioxide
-
14%
c) sodium hydroxide
-
14%
d) hydrogen
Explanation
Q.7.
On heating acetaldehyde with ammonical silver nitrate solution, we get
-
12%
a) HCHO
-
12%
b) Silver acetate
-
62%
c) Silver mirror
-
12%
d) CH3OH
Q.8.
Which of the following does not react with phenyl hydrazine?
-
38%
a) Acetophenone
-
12%
b) Acetone
-
25%
c) Ethanol
-
25%
d) Ethanal
Q.9.
Formula of diacetone alcohol is
-
12%
a) (CH3)2C(OH)CH2COCH3
-
50%
b) (CH3)2CHOHCH2COCH3
-
12%
c) CH3CHOHCH2COCH3
-
25%
d) none of the above
Q.10.
Which of the following is hypnotic?
-
25%
a) Acetaldehyde
-
25%
b) Metaldehyde
-
50%
c) Paraldehyde
-
0%
d) None
Q.11.
han One Correct Answer Q101) Among the following compounds, which will react with acetone to give a product containing >C=N- ?
-
25%
a) C6H5NH2
-
12%
b) (CH3)3N
-
25%
c) C6H5NHC6
-
38%
d) C6NHNH2
Explanation
Q.12.
Which compounds will not reduce Fehling's solution?
-
71%
a) Benzaldehyde
-
0%
b) Ethanal
-
0%
c) Methanal
-
29%
d) Trichloroethanal
Q.13.
Chloral belongs to the class of
-
14%
a) alcohols
-
57%
b) aldehydes
-
14%
c) amides
-
14%
d) ketones
Q.14.
3-Hydroxybutanal is formed when (X) reacts with (Y) in dilute (Z) solution. What are X, Y and Z
-
38%
a) CH3CHO, (CH3)2CO, NaOH
-
12%
b) CH2CHO, CH3CHO, NaCl
-
12%
c) (CH3)2CO, (CH3)2CO, HCl
-
38%
d) CH3CHO, CH3CHO, NaOH
Explanation
Q.15.
Which one of the following undergoes reaction with 50% sodium hydroxide solution to give the corresponding alcohol and acid? [ AIEEE 2004]
-
17%
a) Phenol
-
50%
b) Benzaldehyde
-
33%
c) Butanol
-
0%
d) Benzoic acid
Explanation
Q.16.
han One Correct Answer Q106) Which compound(s) has have active methylene group?
-
0%
a) CH3-CH2-NO2
-
0%
b)
-
71%
c)
-
29%
d)
Q.17.
An organic compound X on treatment with acidified K2Cr2O7 gives compound Y which reacts with I2 and sodium carbonate to form triiodomethane. The compound X can be ... ..
-
0%
a) CH3CH(OH)CH3
-
29%
b) CH3CH2CHO
-
57%
c) CH3CHO
-
14%
d) CH3COCH3
Explanation
Q.18.
The best oxidising agent for oxidation of CH3CH=CHCHO to CH3CH=CH-COOH
-
0%
a) Acidified KMnO4
-
29%
b) Alkaline KMnO4
-
29%
c) Acidified K2Cr2O7
-
43%
d) Ag(NH3)2+
Q.19.
Which of the following compounds does not react with NaHSO3
-
29%
a) HCHO
-
14%
b) Acetone
-
43%
c) Acetophenone
-
14%
d) Acetaldehyde
Q.20.
Acetaldehyde is produced from the following in the presence of aqueous KMnO4 solution ... ..[ Punjab CET 1998]
-
29%
a) Ethyl chloride
-
0%
b) Methyl alcohol
-
14%
c) Ethane
-
57%
d) Ethyl alcohol
Explanation
Q.21.
Alkaline hydrolysis of 1,1-dichloroalkane yields
-
14%
a) alkyne
-
29%
b) alkanol
-
14%
c) alkanal
-
43%
d) alkanone
Explanation
Q.22.
Schiff's reagent is
-
43%
a) magenta solution decolourised with sulphurous acid
-
14%
b) magenta solution decolourised with chlorine
-
14%
c) ammoniacal cobalt chloride solution
-
29%
d) ammoniacal manganese sulphate solution
Q.23.
han One Correct Answer Q113) Which is/are not mixed ketone(s)?
-
29%
a) Butan-2-one
-
0%
b) Propan-2-one
-
43%
c) Pentan-3-one
-
29%
d) Pentan-2-one
Q.24.
Collin's reagent causes the conversion
-
0%
a) >CO → >CHOH
-
33%
b) >CHO → -COOH
-
17%
c) >CHOH → >CO
-
50%
d) >CHOH → -COOH
Q.25.
han One Correct Answer Q115) Which of the following will undergo aldol condensation?
-
50%
a) Acetaldehyde
-
38%
b) Benzaldehyde
-
12%
c) Propanaldehyde
-
0%
d) Trideutero acetaldehyde
Q.26.
on Q116) This reaction given is ... ... [ DEC 2002]
-
57%
a) Cannizzaro reaction
-
0%
b) Aldol candensation
-
14%
c) Knoevengel reaction
-
29%
d) Non of these
Q.27.
Assertion: Chloral hydrate CCl3CH(OH)2 is a stable molecule. Reason: An organic compound having two -OH groups on one carbon atom is unstable
-
0%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
-
14%
b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
-
86%
c) Assertion is true but, Reason is false
-
0%
d) Assertion is false but, Reason is true
Q.28.
Paraldehyde is a trimer of
-
17%
a) Acetaldehyde
-
33%
b) Benzaldehyde
-
33%
c) Propionaldehyde
-
17%
d) Formaldehyde
Q.29.
Calcium propanoate on refluxing yields
-
17%
a) propanol - 2
-
0%
b) pentanone-2
-
33%
c) propanone-2
-
50%
d) pentanone-3
Q.30.
Aldehyde used in the manufacture of perfumes is
-
14%
a) HCHO
-
29%
b) C6H5CHO
-
29%
c) CCL3CHO
-
29%
d) CH3CHO