Q.1
on Q241) The following reaction is known by the name of
ch-28_que_no-241_img_no1.png
  • a) Rosenmund's reaction
  • b) Cannizzaro's reaction
  • c) Stephen's reduction
  • d) none of these
Q.2
Acetone may be produced from starch by the action of
  • a) acid
  • b) certain bacteria
  • c) oxidising agents
  • d) none of these
Q.3
Which of the following compounds is oxidised to prepare ethyl methyl ketone? [ IIT 1988]
  • a) 2-propanol
  • b) 1-butanol
  • c) 2-butanol
  • d) t-butyl alcohol
Q.4
Ketone reacts with Mg-Hg over water to give
  • a) Pinacolone
  • b) Pinacols
  • c) Alcohols
  • d) None of these
Q.5
Which of the following reagents is used to distinguish acetone and acetophenone?
  • a) NaHSO3
  • b) Na2SO4
  • c) NH4Cl
  • d) Grignard reagent
Q.6
Aldehydes behave as
  • a) Oxidising as well as reducing agent
  • b) reducing agent
  • c) oxidising agent
  • d) dehydrating agent
Q.7
han One Correct Answers Q247) Which is /are generally used for preparing derivatives of aldehydes and ketones?
  • a) Hydrogen cyanide
  • b) Hydroxylamine hydrochloride
  • c) 2,4-Dinitrophenyl hydraine
  • d) Phenylhydrazinehydrochloride
Q.8
A compound possessing α-hydrogen atom, in the presence of dilute alkali forms β-hydroxy aldehyde. This product on cortonaldehyde. The compound us
  • a) CH3CH2CHO
  • b) CH2=CH-CHO
  • c) HC≡C-CHO
  • d) CH3CHO
Q.9
Benzaldehyde and acetaldehyde can be distinguished by
  • a) NH3 reaction
  • b) iodoform test
  • c) 2:4 DNP test
  • d) Wolff-Kishner's reduction
Q.10
on Q250) The product of following reaction is
ch-28_que_no-250_img_no1.png
  • a)
    ch-28_qn-250choice_img_no1.png
  • b)
    ch-28_qn-250choice_img_no2.png
  • c)
    ch-28_qn-250choice_img_no3.png
  • d)
    ch-28_qn-250choice_img_no4.png
Q.11
Which of the following has the most acidic hydrogen? [ IIT 2000 ]
  • a) 3-Hexanone
  • b) 2, 4-Hexanedione
  • c) 2, 5-Hexanedione
  • d) 2, 3-Hexaedione
Q.12
han One Correct Answer Q252) Which is/are correct statement(s)?
  • a) Cannizzaro's reaction is proton-hydride transfer reaction
  • b) Hofmann-degradation of acid amid involves intra-molecular migration is intramolecular
  • c) Fries migration is intramolecular
  • d) Cannizzaro's reaction is disproportionation reaction
Q.13
HCHO and HCOOH are distinguished by treating with
  • a) Benedict solution
  • b) NaHCO3
  • c) Tollens reagent
  • d) Fehling's solution
Q.14
Wacker method involves the conversion of alene using PdCl2 into corresponding
  • a) Alcohol
  • b) Aldehyde
  • c) Ether
  • d) Ketone
Q.15
How will you convert butan-2-one to propanoic acid? ... ... [ IIT 2005]
  • a) Tollen's reagent
  • b) Fehling's solution
  • c) NaOH/I3/H+
  • d)NaOH/NaI/H+
Q.16
han One Correct Answer Q256) Which compound(s) react(s) with PCl5?
  • b) C2H5OH
  • c) CH3COCH3
  • a) HCHO
  • d) CH3CHO
Q.17
The addition of HCN to carbonyl compounds is an example of ... ... [ Haryana EET 2000 ]
  • a) Nucleophilic substitution
  • b) Electrophilic addition
  • c) Nucleophilic addition
  • d) Electrophilic substitution
Q.18
The important step in Cannizzaro's reaction is the intermolecular shift of
  • a) H-atom
  • b) proton
  • c) hydronium ion
  • d) hydride ion
Q.19
Nucleophilic addition reaction will be most favoured in
  • a) CH3CHO
  • b) CH3CH2CHO
  • c) (CH3)2C = O
  • d) CH3CH2CH2COCH3
Q.20
Which of the following does not give brick red ppt. with Fehling's solution?
  • a) Formalin
  • b) Acetone
  • c) Acetaldehyde
  • d) D-glucose
Q.21
Consider the following statements. Acetopgenone can be prepared by I. Oxidation of 1-phenylethanol II. Reaction of benzaldehyde with methyl magnesium bromide III. Friedel crafts reaction of benzene with acetyl chloride IV. Distillation of calcium benzoate Which of the above satements are correct?
  • a) I and II
  • b) I and IV
  • c) I and III
  • d) III and IV
Q.22
C6H5CHO + HCN → C6H5CN(CN)OH, the product is
  • a) optically active
  • b) raccemate
  • c) a meso compound
  • d) mixture of distereoisomers
Q.23
han One Correct Answer Q263) Which react(s) with Fehling's solution
  • a) Acetone
  • b) Formic acid
  • c) Acetaldehyde
  • d) Formaldehyde
Q.24
Acetals are
  • a) Aldehyde
  • b) Ketone
  • c) diether
  • d) hydroxy aldehyde
Q.25
Tear gas is
  • a) C6H5COCH2Cl
  • b) C6H5COCH3
  • c) C6H5COCl
  • d) C6H5OC6H5
Q.26
Cyclohexene on ozonolysis followed by reaction with zinc dust and water gives compound E. Compound E on further treatment with aqueous KOH yields compound F. Compound F is .... [ IIT 2007]
  • a)
    ch-28_qn-266choice_img_no1.png
  • b)
    ch-28_qn-266choice_img_no2.png
  • c)
    ch-28_qn-266choice_img_no3.png
  • d)
    ch-28_qn-266choice_img_no4.png
Q.27
Dialkyl cadmium reacts with compound to form a ketone. The compound is
  • a) CO
  • b) acid chloride
  • c) acid
  • d) ester
Q.28
Aldehydes and ketones do not give addition reaction with
  • a) HCN
  • b) HCl(aq)
  • c) NaHSO4
  • d) Both a and b
Q.29
General formula of carbonyl compound is ...
  • a) CnH2nP
  • b) CnH2n+2O
  • c) CnH2n+1O
  • d) CnH2n+2P2
Q.30
C2H5OH and RCOOC2H5 can be separated from CH3CHO using .... ... [ DEC2006]
  • a) Tollen's reagent
  • b) I2/NaoH
  • c) NH2NH2
  • d) NaHSO3
0 h : 0 m : 1 s