NEET Practice Questions - Chemistry - Aldehydes, Ketones and Carboxylic Acids

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  • Subject:

    Chemistry

  • Chapter:

    Aldehydes, Ketones and Carboxylic Acids


Aldehydes and ketones will not form crystalline derivatives with                            

(a) sodium bisulphite

(b) phenyl hydrazine

(c) semicarbazide hydrochloride

(d) dihydrogen sodium phosphate


Acetone reacts with iodine (I2) to form iodoform in the presence of

(a) CaCO3          (b) NaOH          (c) KOH            (d) MgCO3


Which of the following compounds with molecular formula, C5H10 yields acetone on ozonolysis? 

(a) 2-methyl-2-butene

(b) 3-methyl-1-butene

(c) Cyclopentane

(d) 2-methyl-1-butene


Among acetic acid, phenol and n-hexanol which one of the following compound will react with NaHCO3 solution to give sodium salt and CO2?                                             

(a) Acetic acid

(b) n-hexanol

(c) Acetic acid and phenol

(d) Phenol


The reagent used for the preparation of acetaldehyde from acetophenone is

(1) NaHSO3         (2) C6H5NHNH2            (3) NH2OH              (4) NaOH and I2

 


Iodoform test is not given by

(a) 2-pentanone                  (b) ethanol

(c) ethanal                          (d) 3-pentanone


Two isomeric ketones 3-Pentanones and 2-pentanone can be distinguished by

(a) I2/NaOH only               (b) NaHSO3 only

(c) NaCN/HCl                     (d) both of (a) and (b)   


Products of the following reaction                                   

  CH3CC.CH2CH3 (ii) hydrolysis(i) O3 ... are

(a) CH3CHO + CH3CH2CHO

(b) CH3COOH + CH3COCH3

(c) CH3COOH + HOOC.CH2CH3

(d) CH3COOH + CO2


Which alkene on ozonolysis gives CH3CH2CHO and CH3COCH3?                                          

(a) CH3CH2CH=C<CH3CH3

(b) CH3CH2CH=CHCH2CH3

(c) CH3CH2CH=CHCH3

(d) CH3-C|=CHCH3           CH3


The major organic product formed from the following reaction

 (ii) LiAlH4  (iii) H2O(i) CH3NH2 ... is

(a)                    (b) 

(c)                  (d)