Q.1.
The substance employed as tear gas is
-
0%
a) westron
-
40%
b) chloretone
-
50%
c) Chloropicrin
-
10%
d) none of the above
Q.2.
grignard reagent shows addition on
-
0%
a) - C≡N
-
38%
b) >C=O
-
0%
c) >C=S
-
62%
d) all of these
Q.3.
Replacement of Cl of chlorobenzene to give phenol requires drastic conditions but chlorine of 2, 4-dinitrochlorobenzene is readily replaced because
-
11%
a) NO2 makes the electron rich ring at ortho and para position
-
22%
b) NO2 withdraw electrons at meta
-
11%
c) NO2 donate electrons at m-position
-
56%
d) NO2 withdraws electrons at ortho and para position
Q.4.
The correct order of melting and boiling points of the primary (1°), secondary (2°) and tertiary (3°) alkyl halides
-
70%
a) P > S > T
-
30%
b) T > S > P
-
0%
c) S > T > P
-
0%
d) T > P > S
Q.5.
The C-Mg bond in CH3CH2MgBr is
-
11%
a) polar covalent bond
-
22%
b) non-polar covalent bond
-
44%
c) ionic bond
-
22%
d) hydrogen bond
Q.6.
Which one is the most reactive towrds SN1 reaction?
-
12%
a) C6H5CH( C6H5)Br
-
0%
b) C6H5CH( CH3)Br
-
75%
c) C6H5C(CH3)( C6H5)Br
-
12%
d) C6H5CH2Br
Q.7.
CO2 on reaction with C2H5MgBr and H2O gives
-
14%
a) ethane
-
43%
b) propionic acid
-
29%
c) acetic acid
-
14%
d) none of these
Q.8.
Ethyl alcohol gives ethyl chloride on treatment with
-
0%
a) KCl
-
67%
b) SOCl2
-
17%
c) NaCl
-
17%
d) Cl2
Q.9.
Which of the following does not give yellow precipitate with AgNO 3 ?
-
29%
a) (CH3)3-CH2-I
-
0%
b) CH2=CH2-I
-
71%
c) CH2=C-CH3
-
0%
d) CHI3
Q.10.
Isocyanide test is used to detect
-
43%
a) primary amines
-
14%
b) primary alcohol
-
29%
c) secondary amines
-
14%
d) secondary alcohol
Q.11.
Phenol is heated with CHCl3 and alckoholic KOH when salicylaldehyde is produced. The reaction is kknown as ...
-
0%
a) Sommelete reaction
-
12%
b) Friedel-Craft reaction
-
25%
c) Rosenmund's reaction
-
62%
d) Reimer-Tiemann
Q.12.
The Mg - Br bound in CH3CH2MgBr is
-
43%
a) Covalent
-
14%
b) non-polar
-
29%
c) ionic
-
14%
d) none of these
Q.13.
Pick up the correct statement about alkyl halide.
-
0%
a) They show H-bonding
-
0%
b) They are soluble in water
-
33%
c) They do not contain any polar bond.
-
67%
d) They are soluble in organic solvents
Q.14.
Which of the following are arranged in decreasing order of dipole moment?
-
0%
a) CH3Cl, CH3Br, CH3F
-
43%
b) CH3Cl, CH3F, CH3Br
-
43%
c) CH3Br, CH3Cl, CH3F
-
14%
d) CH3Br, CH3F, CH3Cl
Q.15.
The following reaction is known as
-
17%
a) Wurtz reaction
-
17%
b) Fitting reaction
-
0%
c) Frankland's reaction
-
67%
d) Finkelstein's reaction
Q.16.
Methyl chloride reacts with silver acetate to yield
-
33%
a) Ethyl acetate
-
17%
b) acetic acid
-
33%
c) Methyl acetate
-
17%
d) Formic acid
Q.17.
Which of the following is the reason for insolubility of CCl4 in water
-
71%
a) CCl4 is non-polar
-
0%
b) Water is non-polar
-
29%
c) Water and CCl4 are polar
-
0%
d) None of the above
Q.18.
In the reaction below 'X' stands for
-
14%
a) an oxidant
-
43%
b) light and air
-
43%
c) a reductant
-
0%
d) none of these
Q.19.
Propyl iodide and isopropyl iodide are
-
29%
a) chain isomers
-
0%
b) metamers
-
57%
c) position isomers
-
14%
d) functional isomers
Q.20.
In order to get ethanethiol from C2H5Br
-
14%
a) Na2S
-
43%
b) NaHS
-
29%
c) KCNS
-
14%
d) K2S
Q.21.
A yellow precipitate is obtained when aqueous AgNO3 is added to a solution of the compound
-
0%
a) CCl3CHO
-
20%
b) CHCl3
-
80%
c) CH2 = C - CH2I
-
0%
d) C6H5CH2Cl
Q.22.
2-chlorobutane obtained by chlorination of butane, will be
-
0%
a) meso-form
-
83%
b) racemic form
-
17%
c) d-form
-
0%
d) l-form
Q.23.
Which of the following is primary halide?
-
17%
a) Isopropyl halide
-
0%
b) Sec.butyl halide
-
17%
c) Tert.butyl halide
-
67%
d) Neo-hexyl chloride
Q.24.
Which group is displaced by a halogen group
-
67%
a) Hydroxyl (OH) group
-
0%
b) Aldehyde (-CHO) group
-
33%
c) Nitro (-NO2) group
-
0%
d) Keto (C=O) group
Q.25.
When CCl4 is boiled with KOH, the product formed is
-
17%
a) formic acid
-
17%
b) carbon dioxide
-
17%
c) methl alcohol
-
50%
d) formaldehyde
Q.26.
Which is finally produced when acetylene reacts with HCF?
-
60%
a) CH3CHCl2
-
20%
b) CH2=CHCl
-
20%
c) ClCH=CHCl
-
0%
d) None of the above
Q.27.
The alkyl group of Grignard reagent acts as
-
0%
a) free radical
-
60%
b) carbanion
-
20%
c) carbonium ion
-
20%
d) none of the above
Q.28.
The phosphrous pentachloride reacts with ethanol to give
-
50%
a) ethyl chloride
-
17%
b) ethylidene chloride
-
17%
c) ethylene chloride
-
17%
d) all of these
Q.29.
Chlorine is most reactive towards NaOH in
-
0%
a) CH3Cl
-
0%
b) CH2 = CHCl
-
40%
c) C6H5Cl
-
60%
d) C6H5CH2Cl
Q.30.
Ethyl bromide reacts with sodium lead alloy to form?
-
33%
a) Tetraethyl lead
-
17%
b) Ethyl sodium
-
17%
c) Ethane
-
33%
d) Wthene