Q.1.
on Q301) A is
-
29%
a)
-
14%
b)
-
29%
c)
-
29%
d)
Explanation
Q.2.
han One Correct Answer Q302) Which of the following show(s) Cannizzaro's reaction?
-
50%
a)
-
25%
b)
-
25%
c)
-
0%
d)
Q.3.
on Q303) Here P is .... [ IIT 1995]
-
29%
a)
-
29%
b)
-
43%
c)
-
0%
d) None of the above
Q.4.
Acetone is prepared by
-
20%
a) oxidation of n- propyl alcohol
-
30%
b) oxidation of acetic acid
-
30%
c) pyrolysis of acetic acid
-
20%
d) pyrolysis of calcium acetate
Q.5.
An organic compound 'A' has the molecular formula C3H6O, it undergoes iodoform test. When saturated with HCl it gives 'B' of molecular formula C9H14O. A and B respectively are ..
-
14%
a) Propanal and mesitylene
-
29%
b) Propanone and mesityl oxide
-
57%
c) Propanone and 2,6-dimethyl-2, 5-heptadien-4-one
-
0%
d) Proanone and mesitylene oxide
Explanation
Q.6.
In Tischenko's reaction an aldehyde is heated with catalyst
-
33%
a) Mg/Hg
-
0%
b) Al(OC2H5)3
-
67%
c) Al2O
-
0%
d) NaOH
Q.7.
Glucose forms a silver mirror with Tollen's reagent. This shows the presence of
-
0%
a) Alcoholic group
-
25%
b) Ketonic group
-
50%
c) Aldehydic group
-
25%
d) Acidic group
Q.8.
on More Than One Correct Answer Q309) In the given reaction A will
-
33%
a) A can show free radical and electrophilic substitution
-
33%
b) contains two carbonyl group
-
0%
c) is oxidised to carboxylic acid
-
33%
d) is an aromatic organic compound
Q.9.
Aromatic aldehydes in the presence of cyanide on as ctalyst, are converted to acyloins. This reaction is called
-
0%
a) Claisen condensation
-
50%
b) Cannizzaro reaction
-
0%
c) Benzoin condensation
-
50%
d) Perkin reaction
Q.10.
A mixture of benzenaldehyde and formaldehyde on heating with aqueous NaOH solution gives ... ... [ IIT 2001]
-
33%
a) Benzyl alcohol and sodium formate
-
0%
b) Sodium benzoate and methyl alcohol
-
0%
c) Sodium benzoate and sodium formate
-
67%
d) Benzyl alcohol and methyl alcohol
Explanation
Q.11.
Which of the following aldehydes can ive Cannizzaro reaction with base?
-
33%
a) CH3 - CH2 - CH2 - CHO
-
0%
b) (CH3)3C - CHO
-
67%
c) H3C - CH = CH - CHO
-
0%
d)
Q.12.
Formaldehyde can be manufactured from
-
0%
a) Watergas
-
67%
b) natural gas
-
33%
c) both a and b
-
0%
d) none of these
Explanation
Q.13.
Which of the following is a method of converting a unsaturated ketone into unsaturated hydrocarbon?
-
33%
a) Reimer Tiemann reaction
-
0%
b) Cannizzaro's reaction
-
33%
c) Wolff-Kishner reduction
-
33%
d) Aldol condensation
Q.14.
Which reaction yield Bakelite
-
0%
a) Phenol and HCHO
-
0%
b) Ethylene glycol and Dimethylterephthalate
-
33%
c) Urea with HCHO
-
67%
d) Tetramethyl glycol with Hexamethylene diisocyanate
Q.15.
han One Correct Answer Q316) Which of the follwoing do/does not react with Fehling's solution?
-
67%
a) Acetaldehyde
-
0%
b) Acetophenone
-
0%
c) Benzaldehyde
-
33%
d) Glucose
Q.16.
Benzophenone can be converted into benzene using .... .. [ Tamil Nadu CET 2001]
-
0%
a) Fused alkali
-
0%
b) Anhydrous AlCl3
-
50%
c) Sodium amalgam in water
-
50%
d) Acidified dichromate
Explanation
Q.17.
Two molecules of an aldehyde react with a concentrated solution of caustic soda and produces one molecule of an alcohol and acid each, which one is the aldehyde?
-
25%
a) Propionaldehyde
-
50%
b) Butyraldehyde
-
0%
c) Acetaldehyde
-
25%
d) Formaldehyde
Q.18.
A carbonyl compound reacts with hydrogen cyanide to form cyanohydrin which on hydrolysis forms a racemic mixture of α-hydroxy acid. The carbonyl compound is
-
0%
a) acetone
-
67%
b) acetaldehyde
-
0%
c) formaldehyde
-
33%
d) diethyl ketone
Explanation
Q.19.
Formaldehyde when treated with KOH (caustic potash) gives methanol and potassium formate, the reaction is known as ... ..[ Punjab CET 1997]
-
0%
a) Claisen's reaction
-
33%
b) Knoevenagel's reaction
-
33%
c) Cannizzaro's reaction
-
33%
d) Perkin's reaction
Q.20.
Which is not true about acetophenone?
-
0%
a) Reacts to form 2,4-dinitrophenyl hydrazone
-
25%
b) reacts with Tollen's reagent to form silver mirror
-
25%
c) Racts with I2/NaOH to form iodoform
-
50%
d) On oxidation with alkaline KMnO4 followed by hydrolysis give benzoic acid
Q.21.
Compound 'X' ( molecular formula C3H8O) is treated with acidified potassium dichromate to form a product 'Y' ( molecular formula C3H6O) 'Y' forms a shining silver mirror on warming with ammoniacal silver nitrate. 'Y' when treated with an aqueous solution of H2NCONHNH2 and sodium acetate gives a product 'Z'. The structure of 'Z' is ... [ IIT 2002]
-
33%
a) CH3CH2CH = NNHCONH2
-
33%
b) CH3CH2CH = NCONHNH2
-
0%
c)
-
33%
d)
Explanation
Q.22.
han One Correct Answer Q323) Which will form two oximes with NH2OH?
-
0%
a) CH3CHO
-
33%
b) CH3COCH2CH3
-
33%
c) HCHO
-
33%
d) CH3COCH2CH2CH3
Q.23.
han One Correct Answer Q324) In which reaction(s) chiral carbon is/are generated?
-
0%
a)
-
33%
b)
-
33%
c)
-
33%
d)
Q.24.
In nucleophilic addition reactions the reactivity of carbonyl compoundss follows order
-
33%
a) H2C=O >R2C=O > Ar2C = O > RCHO > ArCHO
-
0%
b) H2C=O > RCHO > ArCHO > Ar2C = O
-
33%
c) Ar2C = O > R2C=O > ArCHO > H2C=O
-
33%
d) ArCHO > Ar2C = O > RCHO > R2C=O > H2C=O
Q.25.
on Q326) In Cannizzaro reaction given below the slowest step is .... [ AIEEE 2009]
-
33%
a) The attack of :OH- at the carboxyl group
-
0%
b) The transfer of hydride to the carbonyl group
-
33%
c) The abstraction of proton from the carboxylic group
-
33%
d) The deportonation of PhCH2OH
Explanation
Q.26.
Assertion:Hydroxyketones are not directly used in Grignard reaction. Reaction: Grignard reagents react with hydroxyl group.
-
25%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
-
50%
b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
-
25%
c) Assertion is true but, Reason is false
-
0%
d) Assertion is false but, Reason is true
Q.27.
The final product formed when acetaldehyde is reduced with sodium and alcohol is
-
0%
a) Ethane
-
33%
b) Ethyl alcohol
-
67%
c) Ethylene
-
0%
d) All
Q.28.
Reductive ozonolysis of benzene produces
-
0%
a) Glyoxal
-
0%
b) Acetone
-
67%
c) Maleic anhydride
-
33%
d) Phthalic acid
Explanation
Q.29.
on Q330)
-
33%
a)
-
33%
b)
-
33%
c)
-
0%
d) None is correct
Q.30.
Which one of the following compounds in treatment with LiAlH4 will give a product that will give a positive iodoform test?
-
50%
a) CH3COCH3
-
25%
b) CH3CH2CHO
-
0%
c) CH3CH2COOCH3
-
25%
d) CH3CH2OCH2CH3
Explanation
