Q.1.
The reagent used for following conversion is CH3CH2COOH → CH3CH2CH3 ...[DEC 1994]
-
11%
a) LiAlH4
-
11%
b) Soda Lime
-
44%
c) Red P and concentrated HI
-
33%
d) Amalgamated zinc and concnetrated HCl
Q.2.
The only alcohol that can be prepared by the indirect hydration of alkene us ...[ AFMC 2005]
-
25%
a) ethyl alcohol
-
0%
b) propyl alcohol
-
38%
c) isobutyl alcohol
-
38%
d) methyl alcohol
Q.3.
Bayer's reagent is ... [ BHU ]
-
0%
a) Saturated KMnO4 solution
-
12%
b) Neutral KMnO4 solution
-
62%
c) Alkaline KMnO4 solution
-
25%
d) Acidic KMnO4 solution
Q.4.
The compound which do not have any primary hydrogen atoms is ... [ AIIMS 2004]
-
12%
a) butane
-
12%
b) iso-butane
-
62%
c) cyclohexane
-
12%
d) 2,3-dimenthylbutane
Q.5.
Which of the following reacts fastest with Br2 + anhyd.AlCl3?
-
43%
a) Anisole
-
57%
b) Toluene
-
0%
c) Benzene
-
0%
d) Nitrobenzene
Q.6.
Pheyl magnesium bromide reacts with methanol to give ...[ DPMT 2009]
-
0%
a) a mixture of anisole and Mg(OH)Br
-
43%
b) a mixture of benzene and Mg(OMe)Br
-
43%
c) a mixture of toluene and Mg(OH)Br
-
14%
d) a mixture of phenol and Mg(Me)Br
Q.7.
StatementI:Dimethyl sulphide is commonly used for the reduction of an ozonide of an alkene to get the carbonyl compound Statement II: It reduces the ozonide giving water soluble dimethyl sulphoxide and excess of it evaporates ...[ IIT 2001]
-
80%
a) Statement I is correct Statement II is correct Satement II is a correct explanation of statement I
-
0%
b) Statement I is correct statement II is correct statement II is not the correct explanation of statement I
-
20%
c) Statement I is correct, statement II is incorrect
-
0%
d) Statement I is incorrect statement II is correct
Explanation
Q.8.
The compound with molecular formula C8H10 which will give only two isomers on electrophilic substitution with Cl2/FeCl3 or with HNO3/H2SO4 is ..[ DUMET 2010]
-
14%
a) p-dimethylbenzene
-
14%
b) m-dimethylbenzene
-
43%
c) o-dimethylbenzene
-
29%
d) ethylbenzene
Explanation
Q.9.
In which reaction, polysubstitution takes place? [AMU 2006]
-
22%
a)
-
33%
b)
-
33%
c)
-
11%
d)
Q.10.
The major organic compound formed by the reaction of 1,1,1-trichloroethane with silver powder is ...[ IIT 2014]
-
38%
a) acetylene
-
0%
b) ethene
-
50%
c) 2-butyne
-
12%
d) 2-butene
Explanation
Q.11.
When one mole of an alkene on ozonolysis produces 2 moles of propanone the alkene is ...[ Kerala PMT 2011]
-
14%
a) 2,3-dimethyl-1-butene
-
14%
b) 2,3-dimethyl-2-pentene
-
71%
c) 2,3-dimethyl-2-butene
-
0%
d) 3-methyl-1-butene
Explanation
Q.12.
Formation of alkanes by action of Zn on alkyl halides is called ... [ DPMT 1994]
-
44%
a) Frankland reaction
-
11%
b) Cannizzaro reaction
-
11%
c) Wurtz ereaction
-
33%
d) Kolbe's reaction
Q.13.
on Q133) In this reaction, the final product (C) is ... [ DPMT 2005]
-
100%
a) CH3CH(Br)CH3
-
0%
b) CH3CH2CH2Br
-
0%
c) CH2 = CHBr
-
0%
d) BrHC=CH-CH3
Explanation
Q.14.
on Q134) Among the following compound (I - III), the correct order in reaction with electrophile is ...[ CBSE 1997]
-
29%
a) II > III > I
-
14%
b) III < I < II
-
57%
c) I >II > III
-
0%
d) I = II > III
Q.15.
Which of the following yields both alkane and alkene? [ AFMC 2004]
-
50%
a) Kolbe's reaction
-
38%
b) Williamson's synthesis
-
0%
c) Wurtz reaction
-
12%
d) Sandmeyer's reaction
Q.16.
Olefins can be hydrogenated by .... [ AIIMS 1991]
-
0%
a) Zinc and hydrochloric acid
-
62%
b) Raney nickel and hydrogen
-
12%
c) Nascent hydrogen
-
25%
d) Lithium aluminium hydride in ether
Q.17.
Identify a reagent from the following list which can easily distingusih between 1-butyne and 2-butyne [ IIT 2002 ]
-
14%
a) bromine, CCl4
-
14%
b) H2, Lindlar catalyst
-
43%
c) dilute H2SO4, HgSO4
-
29%
d) ammonical CuCl2Solution
Explanation
Q.18.
n-butylbenzene on oxidation will give [kerala MEE 2000 ]
-
56%
a) benzoic acid
-
11%
b) butanoic acid
-
11%
c) benzyl alcohol
-
22%
d) benzaldehyde
Q.19.
The strongest ortho-para and strongest meta-directing group respectively are ...[ Kerala PMT 2006]
-
12%
a) - NO2 and -NH2
-
0%
b) -COCNH2 and -NH2
-
75%
c) -NH2 and -CONH2
-
12%
d) -X and -CONH2
Q.20.
The compound with highest boiling point is ...[ IIT 1982]
-
12%
a) 2-methyl butane
-
0%
b) n-pentane
-
0%
c) 2,2-dimethyl propane
-
88%
d) n-hexane
Q.21.
Which of the following has lowest boiling point? [ AFMC 2009]
-
17%
a) CH3CH2CH=CHCH3
-
17%
b) CH3CH2CH2CH2CH3
-
0%
c) H2C = CH - CH2CH = CH2
-
67%
d)
Q.22.
Coal-tar is a main source of .... [ JIPMER 1994]
-
50%
a) Aromatic compounds
-
38%
b) Aliphatic compounds
-
12%
c) Cycloalkanes
-
0%
d) Heterocyclic compounds
Q.23.
3-phenyl propene on reaction with HBr gives (as a major product) [ AIIMS 2005]
-
43%
a) C6H5CH2CH(Br)CH3
-
57%
b) C6H5CH(Br)CH2CH3
-
0%
c) C6H5CH2CH2CH2Br
-
0%
d) C6H5CH(Br)CH=CH2
Explanation
Q.24.
What is formed when acetylene reacts with hypochlorous acids? [ AIEEE2002]
-
29%
a) CH3COCl
-
29%
b) ClCH2CHO
-
29%
c) Cl2CHCHO
-
14%
d) ClCH2COOH
Q.25.
Which of the following is not a green house gas ..[ CET (J&K) 2011]
-
29%
a) Nitrogen
-
29%
b) Carbondioxide
-
43%
c) Ozone
-
0%
d) Methane
Q.26.
The presence of unsaturation in organic compounds can be tested with
-
12%
a) Fehling's solution
-
12%
b) Tollen's reagent
-
25%
c) Schiff's reagent
-
50%
d) Bayers reagent
Q.27.
on Q147) Passage Based Question Q147A) Compound X is
-
22%
a)
-
22%
b)
-
56%
c)
-
0%
d)
Explanation
Q.28.
Which of the following alkenes will react faster with H2 under catalytic hydrogenation condition R is alkyl substituent
-
25%
a)
-
0%
b)
-
12%
c)
-
62%
d)
Q.29.
Most reactive compound towards electrophilic substitution is ...[ DPMT 2008]
-
43%
a)
-
43%
b)
-
0%
c)
-
14%
d) none of these
Q.30.
The C-H bond distance is the longest in ..[ IIT 1989]
-
17%
a) C2H2
-
33%
b) C2H4
-
33%
c) C2H6
-
17%
d) C2H5Br2