Q.1
Ethanal reacts with alkali to give 3-hydroxybutanal. This reaction is
  • a) Aldol condensation
  • b) Reimer-Tiemann reaction
  • c) Claisen condensation
  • d) Polymerisation
Q.2
Ethane can be obtained from ethanal in one step b
  • a) Na-Hg + water
  • b) LiAlH4 + ether
  • c) aluminium isopropoxide and isopropyl alcohol
  • d) Zn-Hg + conc. HCl
Q.3
Reduction of    >C=O to CH can be carried out with ... .... [ DEC 2000 ]
  • a) Catalytic reduction
  • b) Na/C2H5OH
  • c) NH2NH2/KOH
  • d) LiAlH4
Q.4
Magenta is
  • a) methyl red
  • b) red litmus
  • c) alkaline phenolphthalein
  • d) p-rosaniline hydrochloride
Q.5
Formaldehyde when reacted with methyl magnesium bromide gives
  • a) CH3CHO
  • b) CH3COOH
  • c) HCHO
  • d) C2H5OH
Q.6
ion Q66) The following reaction is example of
ch-28_que_no-66_img_no1.png
  • a) Wagner-Meerwin rearrangement
  • b) Wolf rearrangement
  • c) Facorskii rearrangement
  • d) Steven's rearrangement
Q.7
Acetophenone when reacted with a base C2H5ONa, yield a stable compound which has the structure
  • a)
    ch-28_qn-67choice_img_no1.png
  • b)
    ch-28_qn-67choice_img_no2.png
  • c)
    ch-28_qn-67choice_img_no3.png
  • d)
    ch-28_qn-67choice_img_no4.png
Q.8
During reduction of carbonyl compounds by H2NNH2 and KOH the first intermediate is
  • a) RC=N
  • b) RCH=NNH2
  • c) RCH≡NH
  • d) RCONH2
Q.9
The product formed by the reaction of chlorine with benzaldehyde in the absence of a catalyst is ... ..[ Tamil Nadu CET 2002]
  • a) Chlorobenzne
  • b) Benzyl chloride
  • c) Benzoyl chloride
  • d) o- Chlronenzaldehyde
Q.10
Aldehydes are produced in atmosphere by
  • a) Oxidation of secondary alcohols
  • b) Reduction of alkenes
  • c) Reduction of oxygen atoms with hydrocarbons
  • d) Reaction of oxygen atoms with ozone
Q.11
CH3CHO + H2NOH → CH3-CH=N-OH . The above reaction occurs at .... ... [ IIT 1997]
  • a) pH = 1
  • b) pH = 3.5
  • c) Any value of pH
  • d) pH = 12
Q.12
Hexamethylene tetramine is used as an
  • a) antipyretic
  • b) urinary antiseptic
  • c) analgesic
  • d) all of these
Q.13
Both acetaldehyde and ketone react with
  • a) rochelle salt
  • b) 2,4-dintro phenylhydrazine
  • c) ammonical AgNO3
  • d) all of the above
Q.14
ion Q74) The major organic product formed from the following reaction
ch-28_que_no-74_img_no1.png
  • a)
    ch-28_qn-74choice_img_no1.png
  • b)
    ch-28_qn-74choice_img_no2.png
  • c)
    ch-28_qn-74choice_img_no3.png
  • d)
    ch-28_qn-74choice_img_no4.png
Q.15
ion Q75) What is X in the equation below
ch-28_que_no-75_img_no1.png
  • a) K2Cr2O7/H+
  • b) NaBH4
  • c) H2/Ni
  • d) Both a and b
Q.16
Than One Correct Answer Q76) Which show(s) nucleophilic addition reaction(s)
  • a) Methanal
  • b) Ethanal
  • c) Propanone
  • d) None of these
Q.17
From which of the following, tertiary butyl alcohol is obtained, by the action of methyl magnesium iodide? ... ... [ MP CET 2000 ]
  • a) HCHO
  • b) CO2
  • c) CH3COCH3
  • d) CH3CHO
Q.18
ion Q78)
ch-28_que_no-78_img_no1.png
  • a)
    ch-28_qn-78choice_img_no1.png
  • b)
    ch-28_qn-78choice_img_no2.png
  • c)
    ch-28_qn-78choice_img_no3.png
  • d)
    ch-28_qn-78choice_img_no4.png
Q.19
When calcium benzoate and calcium formate are heated they form
  • a) acetophenone
  • b) benzaldehyde
  • c) benzophenone
  • d) formaldehyde
Q.20
When vapour of acetic acid are passed over .... at 300°C we get acetone
  • a) Al2O3
  • b) CuO
  • c) MoO
  • d) Cu
Q.21
Alkaline hydrolysis R2C.Cl2 forms
  • a) alkanal
  • b) alkanone
  • c) propane
  • d) propanone
Q.22
Fehling's solution is
  • a) acidified copper sulphate solution
  • b) ammoniacal cuprous chloride solution
  • c) copper sulphate, Richelle salt + NaOH
  • d) none of the above
Q.23
Than One Correct Answer Q83) Which of the following would not undergo aldol condensation?
  • a) CCl3CHO
  • b) HCHO
  • c) CH3CHO
  • d) (CH3)3CCHO
Q.24
Than One Correct Answer Q84) Which statement(s) is /are correct in the case of acetaldehyde and acetone?
  • a) Both can be reduced into alcohols
  • b) Both react with NaOH to form polymer
  • c) Both give iodoforms test
  • d) Both react with HCN
Q.25
Assertion: Cannizzaro's reaction is a disproportion reaction Reason: One molecule of aldehyde is oxidised on the cost of other
  • a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
  • b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
  • c) Assertion is true but, Reason is false
  • d) Assertion is false but, Reason is true
Q.26
The order of susceptibility of nucleophilic attach on aldehydes follos the order ... ..[ DCE 2002]
  • a) 2° > 3° > 1°
  • b) 3° > 2° > 1°
  • c) 1° > 2° > 3°
  • d) 1° > 3° > 2°
Q.27
Assertion: Salicylaldehyde is less soluble in water than p-hydroxy benzaldehyde Reason: The former shows intermolecular H-bonding
  • a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
  • b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
  • c) Assertion is true but, Reason is false
  • d) Assertion is false but, Reason is true
Q.28
Which one of the following pairs is not correctly matched?
  • a)
    ch-28_qn-88choice_img_no1.png
  • b)
    ch-28_qn-88choice_img_no2.png
  • c)
    ch-28_qn-88choice_img_no3.png
  • d)
    ch-28_qn-88choice_img_no4.png
Q.29
Oxidation of Butan-2-one can be achived by ....
  • a) Tollen's reagent
  • b) Atmospheric oxidation
  • c) Br2 water
  • d) Conc. HNO3
Q.30
Which of the follwoing compounds will show positive silver mirror test?
  • a) HCOOH
  • b) CH3(CHOH)3CHO
  • c) CH3COCHOCH3
  • d) All
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