IIT JEE Chemistry Solved Paper | IIT JEE Chemistry Sample Paper

IIT JEE Chemistry Sample Paper 1

1.Ethanol containing some methanol is called
a) absolute spirit b) rectified spirit c) power alcohol d) methylated spirit
2.Glycerol is a
a) primary alcohol b) monohydric alcohol c) secondary alcohol d) trihydric alcohol
3.Which of the following can work as a dehydrating agent for alcohols?
a) H2SO4 b) Al2O3 c) H3PO4 d) all
4.Primary and secondary alcohols on action of red hot copper give
a) aldehydes and ketons respectively b) ketones and aldehydes respectively c) only aldehydes d) only ketones
5.Which of the following groups will increase the acidity of phenol?
a) NO2 b) CN c) Xhalogens d) all
6.C2H5OH can be differentiated from CH3OH by
a) reaction with HCl b) reaction with NH3 c) Iodoform test d) solubility in water
7.Which of the following compound does not react with metallic sodium?
8.Grignard reagent on reaction with acetone forms
a) tertiary alcohol b) secondary alcohol c) acetic acid d) acetaldehyde
9.Which of the following does not give yellow ppt.with I2NaOH?
a) C2H5OH b) CH3CHO c) CH3COCH3 d) HCHO
10.Which of the following statements is correct?
a) phenol is less acidic than ethyl alcohol b) phenol is more acidic than ethanol c) phenol is more acidic than carbonic acid d) phenol is more acidic than CH3COOH
11.Which one has highest boiling point?
a) Butan-2-ol b) Ethane c) Butane d) Pentane
12.Conversion of ethyl alcohol into acetaldehyde is an example of
a) reduction b) molecular rearrangement c) hydrolysis d) oxidation
13.When wine is put in air, it becomes sour due to
a) Bacteria b) Oxidation of C2H5OH into CH3COOH c) virus d) Formic acid formation
14.In the Libermann’s nitroso reaction, sequential changes in the colour of phenol occurs as
a) Brown or redgreen deep blue b) Red deep blue green c) Red green white d) White red green
15.Glycerol, on heating with oxalic acid at 110C gives
a) Ethanol b) Methanoic acid c) Ether d) Acetone
16.Phenol gives ………..colour with neutral FeCl3 solution
a) violet b) green c) red d) blue
17.Which of the following has maximum hydrogen bonding?
a) ethyl amine b) ammonia c) ethyl alcohol d) diethyl ether
18.Which of the following is the most suitable method for removing the traces of water from ethanol?
a) Heating with Na metal b) Passing dry HCl through it c) Distilling it d) Reacting with Mg.
19.Which of the following is most acidic
a) phenol b) benzyl alcohol c) m- chlorophenol d) cyclohexanol
20.A fruity smell is obtained by the reaction of ethanol with
a) PCl5 b) CH3COCH3 c) CH3COOH d) none of these
21.Silver mirror is a test for
a) aldehydes b) thioalcohols c) acids d) ethers
22.In Cannizzaro’s reaction
a) aldehyde is converted into alcohol b) alcohol is converted into aldehyde c) a primary amine is converted into isocyanide d) aldehyde is converted into alcohol and sodium carboxylate
23.Aldehydes may be distinguished from ketones by the use of
a) Conc.H2SO4 b) Fehling solution c) Pyrogallol d) Grignard’s reagent
24.In public urinals, we observe some nascent smell. This smell is due to
a) hydrolysis of urea of urine by urease of atmosphere into NH3and CO2 b) formation of sulphamic acid by urea of urine c) reaction of CO2 of atmosphere with urea mononitrate in urine d) hydrogen present in air reacts with nitrogen forming NH3
25.Identify Z in the series CH 2 CH 2 HBr X Hydrolysis Y l 2 excess Na 2CO 3
a) C2H5I b) C2H5OH c) CHI3 d) CH3CHO
26.Aldehydes can be distinguished from ketones by using
a) Schiff’s reagent b) Conc.H2SO4 c) Anhy.ZnCl2 d) Resorcinol
27.Which of the following gives iodoform on heating with a solution of I2 containing Na2CO3?
a) ethyl alcohol b) acetone c) ethyl alcohol as well as acetone d) methyl alcohol
28.Benzyl alcohol is obtained from benzaldechyde by
a) Fitting’s reaction b) Clemenson’s reduction c) Kolbe’s reaction d) Reduction with LiAlH4
29.Haloform reaction can be used for preparing
a) Halogens b) CCl4 c) CHCl3 d) Halides
30.Ethyl alcohol n oxidation with K2Cr2O7 gives
a) Acetic acid b) Acetaldehyde c) Formaldehyde d) Formic acid
31.Heating a mixture of sodium benzoate and soda lime gives
a) Methane b) Benzene c) Sodium benzoate d) Calcium benzoate
32.Which of the following is least acidic?
a) C2H5OH b) CH3COOH c) C6H5OH d) ClCH2COOH
33.Among the following the strongest acid is
34.Ethyl alcohol reacts with acetyl chloride to form
a) Ethyl chloride b) Acetic acid c) Methyl acetate d) Ethyl acetate
35.Which of the following statement about benzaldehyde is not true?
a) reduces Tollen’s reagent b) undergoes Aldol condensation c) undergoes Cannizzaro’s reaction d) forms an addition compound with sodium hydrogen sulphite
36.Acyl halide is formed by reacting PCl5 with
a) Alcohol b) Ester c) Amide d) Both carboxylic acids as well as esters
37.Formation is an aqueous solution of
a) Furfural b) Fluorescein c) Formaldehyde d) Formic acid
38.From the following values of dissociation constants of four acids which value represents the strongest acid?
a) 2102 b) 0.02101 c) 3104 d) 2104
39.Cyanohydrin of which of the following forms lactic acid
40.Paraaldehyde is a trimer of
a) Formaldehyde b) Acetaldehyde c) Benzaldehyde d) Propionaldehyde
41.If N and S elements are presentin organic compound, then during Lassaigne’s test both change into
a) Na2S and NaCN b) NaSCN c) Na2SO3 and Na2CO3 d) Na2S and NaCNO
42.The type of isomerism exhibited byC6H5CC6H5NC is
a) position b) functional c) enantiomerism d) functional as well as tautomerism
43.Dye test can be used to distinguish between
a) Ethylamine and acetamide b) Ethylamine and aniline c) Urea and acetamide d) Methylamine and ethylamine
44.Aniline on heating with conc.HNO3+ conc.H2SO4 mixture yields
a) o- and p-Nitroanilines b) m-Nitroaniline c) A black tarry matter d) No reaction
45.On reduction secondary amine is given by
a) nitrobenzene b) methyl cyanide c) nitroethane d) methyl isocyanide
46.In the presence of acid, the hydrolysis of methyl cyanide gives
a) methanoic acid b) ethanoic acid c) methylamine d) methyl alcohol
47.Gabriel synthesis is used for the preparation of
a) 1 Aromatic amines b) 1 Aliphatic amines c) 2 Amines d) Tertiary amines
48.Reduction of nitrobenzene in the presence of Zn/NH4Cl gives
a) Hydrazobenzene b) N-Phenyl hydroxylamine c) Aniline d) Azobenzene
49.Primary and secondary amines can be distinguished by
a) Br2/KOH b) HClO c) HNO2 d) NH3
50.Which of the following is produced by reaction of RCN in sodium and alcohol?
a) RCONH2 b) RCOONH4 c) RCH2NH2 d) RCH23NH2

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