Q.1.
ion Q61) Identify the product in the reaction ...[ DUMET 2010]
-
0%
a) PhCH2CH2CHO
-
62%
b) PhCOCH2CH3
-
25%
c) PhCH2COCH3
-
12%
d) PhCOCOMe
Explanation
Q.2.
n-Propyl bromide on treatmnet with ethanolic potassium hydroxide produces ...[ IIT 1987]
-
22%
a) Propanol-1
-
22%
b) Propene
-
11%
c) Propanoil-2
-
44%
d) Ethyl propyl ether
Q.3.
Elimination of bromine from 2-bromobutane results in the formation of ...[ JCECE 2008]
-
10%
a) equimolar mixture of 1- and 2-butene
-
90%
b) predominantly -2- butene
-
0%
c) predominantly-1-butene
-
0%
d) predominantly-2-butyne
Explanation
Q.4.
The treatment of benzene with isobutene in the presence of sulphuric acid gives ...[ AIIMS 2003]
-
14%
a) Isobutylbenzene
-
57%
b) tert-Butytlbenzene
-
14%
c) n-butylbenzene
-
14%
d) No reaction
Explanation
Q.5.
The ortho/para directing group among the following is ...[ AIIMS 2003]
-
0%
a) COCH3
-
78%
b) NHCOCH3
-
0%
c) COOH
-
22%
d) CN
Q.6.
X is heated with sodalime and gives ethane, X is ... [ AFMC 2005]
-
0%
a) ethanoic acid
-
12%
b) methanoic acid
-
50%
c) propanoic acid
-
38%
d) ether (a) or (c)
Q.7.
When acetylene reacts with water in the presence of HgSO4, the compound actually isolated is
-
25%
a) CH3COCH3
-
25%
b) CH3-CHO
-
12%
c) CH2 + CH2
-
38%
d) CH2= CH(OH)
Explanation
Q.8.
Propyne anad propene can be distinguished by ...[ IIT 2000 ]
-
12%
a) conce. H2SO4
-
25%
b) Br2 in CCl4
-
12%
c) dil. KMnO4
-
50%
d) AgNO3 in ammonia
Explanation
Q.9.
Which of the following compounds reacts with sodium toliberate hydrogen gas? [ Pb CET 1986]
-
14%
a) Ethane
-
14%
b) Propylene
-
57%
c) Acetylene
-
14%
d) Benzene
Q.10.
When propyne is treated is treated with aqueous H2SO4 in presence of HgSO4, the major product is ...[ IIT 1983]
-
14%
a) Propanal
-
29%
b) n-Propyl hydrogen sulphate
-
57%
c) Acetone
-
0%
d) Propanol
Explanation
Q.11.
The decreasing order of reactivity towards electrophilic substitution reaction of the following compounds,Benzene;Chlorobenzene;Nitrobenzene;Toluene is ...[ Kerala PMT 2008]
-
25%
a) 1 > 3 > 4 > 2
-
12%
b) 4 > 1 > > 3 > 2
-
50%
c) 4 > 1 > 2 > 3
-
12%
d) 4 > 2 > 1 > 3
Q.12.
Coke is obtained by heating coal in the ... [ Pb CET 1988]
-
0%
a) Presence of air
-
43%
b) Restricted supply of air
-
43%
c) Absence of air
-
14%
d) Presence of catalyst
Q.13.
In the preparation of alkene from alcohol using Al2O3 which is effective factor? [ AIPMT 2001]
-
0%
a) Porosity of Al2O3
-
22%
b) Temperature
-
33%
c) Concentration
-
44%
d) Surface area of Al2O3
Explanation
Q.14.
The conversion of ClCH=CH-Cl to Cl2CH - CHCl2 can be carried out with ... [ DEC 2000]
-
14%
a) Cl2
-
71%
b) Cl2/>hν
-
0%
c) Cl2/AlCl3
-
14%
d) Cl2/aq.NaOH
Q.15.
Liquid hydrocarbons is converted into a mixture of gaseous hydrocarbon by ...[ AIPMT (Prelims) 2010]
-
29%
a) cracking
-
29%
b) hydrolysis
-
29%
c) oxidation
-
14%
d) distillation
Q.16.
Number of isomers which can be theoretically obtained on monochlorination of 2-methylbutane is ... [ Pb. CET 1989]
-
0%
a) 1
-
17%
b) 2
-
50%
c) 3
-
33%
d) 4
Explanation
Q.17.
Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne? [ AIPMT 2012]
-
56%
a) NaNH2
-
22%
b) HCl
-
11%
c) O2
-
11%
d) Br2
Q.18.
eaction of propene with HOCl proceedsvia addition of ...[ IIT 2001]
-
0%
a) H+ in the first step
-
86%
b) Cl+ in the first step
-
14%
c) OH- in the first stape
-
0%
d) Cl+ and OH- in a single step
Explanation
Q.19.
A salt producing hydrocarbon among these compound is ... [ KCET 2002]
-
14%
a) Ethene
-
29%
b) Ethyne
-
57%
c) Methane
-
0%
d) Ethane
Q.20.
ion Q80) What is M and N in following reaction? [ IIT 2006]
-
33%
a) 6, 6
-
33%
b) 6, 4
-
17%
c) 4, 4
-
17%
d) 3, 3
Explanation
Q.21.
Meta-directing and deactivating group in aromatic electrophilic substitution is ...[ Kerala PMT 2012]
-
0%
a) NO3-
-
29%
b) NO2
-
43%
c) NO2-
-
29%
d) NO2+
Q.22.
Tetrabromoethane on heating with Zn gives ... ..[BHU 2000 ]
-
14%
a) Ethyl bromide
-
14%
b) Ethane
-
29%
c) Ethene
-
43%
d) Ethyne
Explanation
Q.23.
CH3COOH is reacted with HC ≡ CH in presence of Hg2+, the product is
-
29%
a)
-
43%
b) CH3CH2(OOC - CH3)
-
29%
c) CH3CH(OOC - CH3)2
-
0%
d) none of the above
Explanation
Q.24.
Which of the following will yield a mixture of 2-chlorobutene and 3-chlorobutene on treatment with HCl
-
17%
a) CH2=C=CH-CH3
-
67%
b) H2C= C(CH3)-CH=CH2
-
17%
c) CH3 = CH - CH = CH2
-
0%
d) HC + CH - CH = CH2
Explanation
Q.25.
Main constituent(s) of LPG is/ar ...[ AFMC 2009]
-
11%
a) methane
-
56%
b) H2, CH4, iso-butane
-
33%
c) iso-butane, propane
-
0%
d) none of these
Q.26.
he highest boiling point is expected for ...[ IIT 1986]
-
0%
a) Isooctane
-
62%
b) n-octane
-
12%
c) 2,2,3,3- tetramethylbutane
-
25%
d) n-butane
Q.27.
2-hexyne gives trans-2-hexene on treatment with ...[ IIT 2004]
-
43%
a) Li/NH3
-
43%
b) Pd/BaSO4
-
0%
c) LiAlH4
-
14%
d) Pt/H2
Explanation
Q.28.
Which is the most suitable reagent among the following to distinguish compound (3) from the rest of the compound? CH3 - C ≡ C - CH3 CH3 - CH2 - CH2 - CH3 CH3 - CH2 - C ≡ CH CH3 - CH = CH2
-
14%
a) Bromine in carbon tetrachloride
-
0%
b) Bromine in acetic acid
-
14%
c) Alk. KMnO4
-
71%
d) Ammoniacal silver nitrate
Q.29.
ion Q89) Arrange the following in increasing order of their release of energy on combusion
-
0%
a) III < IV
- 17%
b) I < II < IV < III- 67%
c) III < IV < II < I- 17%
d) I > II > III > IVQ.30.The catalyst used in the Wacker process of oxidation of ethene to ethanal is ...[ Kerala PMT 2012]-
33%
a) PdCl2
-
0%
b) V2O5
-
17%
c) Nickel complexes
-
50%
d) TiCl4 and Al(CH3)3
Explanation
- 17%
