Q.1.
Chromyl chloride and toluene react to produce
-
27%
a) p-chlorotoluene
-
45%
b) Benzoic acid
-
18%
c) Benzaldehyde
-
9%
d) Benzyl chloride
Q.2.
The term hypnone is used for
-
8%
a) acetaldehyde
-
42%
b) acetophenone
-
50%
c) benzophenone
-
0%
d) none of these
Q.3.
Reaction of cyclohexanone with dimethylamine in the presence of catalytic amount of an acid forms a compound if water during the generally known as .... ... [ AIEEE 2005]
-
29%
a) A Schiff's base
-
43%
b) An enamine
-
29%
c) An imine
-
0%
d) An amine
Explanation
Q.4.
Calcium acetate when dry distilled gives
-
12%
a) Acetaldehyde
-
38%
b) Acetic anhydride
-
25%
c) Formaldehyde
-
25%
d) Acetone
Explanation
Q.5.
han One Correct Answer Q185) Cannizzaro's reaction will be give by
-
20%
a)
-
40%
b)
-
0%
c)
-
40%
d) CCl3CHO
Q.6.
Which of the following does not undergo polymerization
-
0%
a) HCHO
-
33%
b) CH3CHO
-
67%
c) CH3COCH3
-
0%
d) None of these
Q.7.
han One Correct Answers Q187) The new carbon-carbon bond(s) formation is/are possible in
-
0%
a) Clemmensen reduction
-
50%
b) Reimer-Tiemman reaction
-
50%
c) Friedel-Craft's alkyalation
-
0%
d) Cannizzaro's reaction
Q.8.
RCH = O + H2 → RCH2OH. For this reaction catalyst is
-
29%
a) Pd only
-
29%
b) Pt only
-
0%
c) Ni only
-
43%
d) Any of the above
Q.9.
Aldol condensation will not occur in
-
0%
a) HCHO
-
17%
b) CH3CH2CHO
-
17%
c) CH3CHO
-
67%
d) CH3CH(OH)CH3
Q.10.
Ketones can be prepared by
-
50%
a) Rosenmund's reduction
-
17%
b) Stephen's reduction
-
33%
c) both (a) and (b)
-
0%
d) none of the above
Q.11.
The enol form of acetone, after treatment with D2O gives ... .. [ IIT 1999]
-
20%
a)
-
40%
b)
-
40%
c)
-
0%
d)
Explanation
Q.12.
Aldehydes can be conveniently separated from alcohols by treating with
-
0%
a) NaCN
-
50%
b) NaHSO3
-
33%
c) Na2SO4
-
17%
d) Schiff's reagent
Q.13.
An organic compound C5H10O forms phenyl bydrozone, gives positive iodoform test and undergoes Wolff-Kishner's reaction to give isopentane. It is
-
0%
a) pentan-2-one
-
60%
b) pentan-3-one
-
0%
c) pentanol
-
40%
d) 3-methylbutan-2-one
Q.14.
A compound A has a molecular formula C2Cl3OH. It reduces Fehling solution and on oxidation produces a monocarboxylic acid B. A can laso be obtained by the action of Cl2 on ethanol. A is
-
0%
a) CHCl3
-
0%
b) CH3Cl
-
80%
c) Chloral hydrate
-
20%
d) Chloroacetic acid
Q.15.
Which of the following reagent is Clemmensen's reduction? [ DEC 2005]
-
60%
a) Zn-Hg/conc. HCl
-
0%
b) Zn/HCl
-
40%
c) Red P/HI
-
0%
d) Zn/NaOH
Q.16.
han One Correct Answer Q196) Which of the following reagents react in same manner with HCHO, CH3CHO and CH3COCH3?
-
0%
a) HCN
-
50%
b) NH2OH
-
50%
c) C6H5NHNH2
-
0%
d) NH3
Q.17.
Which of the following aldehydes is more reactive towards nucleophilic addition reaction? ... ...[ Haryana CEET 1998]
-
0%
a) CCl3CHO
-
33%
b) CH3CHO
-
50%
c) C2H5CHO
-
17%
d) CH3COCH3
Q.18.
Which is mixed ketone?
-
20%
a) Benzophenone
-
20%
b) Acetophenone
-
20%
c) Pentanone
-
40%
d) All of these
Q.19.
In Cannizzaro reaction given below, 2Ph-CHO + OH- → Ph-CH2OH + PhCO2- the slowest step is ... ... [ IIT 1996]
-
0%
a) The attack of -OH at the carbonyl group
-
80%
b) The transfer of hydride ion to the carbonyl group
-
0%
c) The abstraction pf proton from the carbonyl group
-
20%
d) The abstraction of proton from the carboxylic acid
Explanation
Q.20.
Which of the following reactants in presence of AlCl3 give acetophenone? ... ... [ Punjab CET 1994]
-
0%
a) Benzene and Acetone
-
40%
b) Phenol and Acetone
-
20%
c) Phenol and AcOH
-
40%
d) Benzene and AcCl
Explanation
Q.21.
Which of the following react with NaOH to produce an acid and an alcohol?
-
0%
a) CH3COOH
-
60%
b) C6H5COOH
-
20%
c) HCHO
-
20%
d) CH3CH2COOH
Q.22.
Which of the following reaction is a condensation reaction?
-
20%
a) CH2=CH2 → Polyethylene
-
20%
b) HCHO → para-formaldehyde
-
60%
c) CH3COCH3 → mesityl oxide
-
0%
d) CH3CHO → paraldehyde
Q.23.
han One Correct Answer Q203) When dry calcium formate is heated, it give(s)
-
50%
a) CaCO3
-
25%
b) CaHCO3
-
25%
c) H2
-
0%
d) CH2O
Q.24.
on Q204) Identify X in the sequence
-
50%
a) (CH3)2CHCHO
-
50%
b) CH3CH2CH2CH2OH
-
0%
c) CH3CH2CH2CHO
-
0%
d)
Q.25.
han One Correct Answer Q205) Which can show tautomerism?
-
50%
a) CH3CH2NO2
-
25%
b) HCN
-
0%
c)
-
25%
d)
Q.26.
3HCHO(aq) ⇋ X, X is ... .... [ DCE 2006]
-
20%
a) Formalin
-
0%
b) Paraformaldehyde
-
20%
c) Paraldehyde
-
60%
d) Metaformaldehyde
Explanation
Q.27.
Assertion: Acetophenone and benzophenone can be bistinguished by iodoform test. Reason: Acetophenone and benzophenone both are carbonyl compounds
-
0%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
-
75%
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.28.
Concentrated sodium hydroxide and benzaldehyde react to produce
-
0%
a) Hydrobenzamide
-
0%
b) Benzophenone
-
20%
c) Cinnamic acid
-
80%
d) Benzyl alcohol
Explanation
Q.29.
With hot conc. KOH brown black resinous product is given by
-
25%
a) HCHO
-
25%
b) CH3CHO
-
0%
c) C2H5OH
-
50%
d) CH3COCH3
Q.30.
Which of the following statement about bezaldehyde is not true
-
50%
a) Forms an addition compound with sodium hydrogen sulphate
-
50%
b) Undergoes Aldol condensation
-
0%
c) Reduces Tollen's reagent
-
0%
d) Undergoes Cannizzaro's reaction