MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
NEET
NEET Chemistry MCQ
Haloalkanes And Haloarenes Mcq Neet Chemistry
Quiz 2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Q.1
Alkyl halides reacts with dialkyl lithium cuprate to give ...[ AIEEE 2005]
0%
a) alkenes
0%
b) alkyl Cu halide
0%
c) alkanes
0%
d) alkenyl halide
Explanation
Answer:(c)
Q.2
An alkyl halides may be converted into an alcohol by [ CET 1997]
0%
a) addition
0%
b) substitution
0%
c) dehydrohalogenation
0%
d) elimination
Explanation
Answer:(b)
Q.3
Compound formed, when methyl amine is heated with chloroform in the presence of KOH is ...[ IIT 2006]
0%
a) CH3 - C ≡ N
0%
b) CH3N+ ≡ C-
0%
c) CH3 - N- ≡ C+
0%
d) CH3NHCH3
Explanation
Answer:(b)
Q.4
1-chlorobutane onreaction with alcoholic KOH gives ... [IIT 1991]
0%
a) 1-butene
0%
b) 1-butanol
0%
c) 2-butene
0%
d) 2-butanol
Explanation
Answer:(a)
Q.5
In the reaction of phenol with CHCl3 and aqueous NaOH at 70°C, the electrophile attacking the ring is ...[ IIT 1991]
0%
a) CHCl3
0%
b) CHCl2
0%
c) CCl2
0%
d) COCl2
Explanation
Answer:(c)
Q.6
Butane nitrile may be prepared by heatiing ...[ IIT 1992]
0%
a) propyl alcohol with KCN
0%
b) butyl alcohol with KCN
0%
c) butyl chloride with KCN
0%
d) propyl chloride with KCN
Explanation
Answer:(d)
Q.7
The products of reaction of alcohol silver nitrite with ethyl bromide are ...[IIT 1991]
0%
a) ethane
0%
b) ethene
0%
c) ethyl alcohol
0%
d) nitroethane
Explanation
Answer:(d)
Q.8
Iodoform is formed when ethanol is heated with [ KCET 1992]
0%
a) potassium iodide and sodium hydroxide
0%
b) iodine and aqueous potassium hydroxide
0%
c) chloroform and iodide
0%
d) iodine and potassium iodide
Explanation
Answer:(b)
Q.9
m- chlorobenzaldehyde on reaction with conc.KOH at room temperature gives: [IIT 1991]
0%
a) potassium m-chlorobenzoate and m- hydroxy benzaldehyde
0%
b) m-hydroxybenzaldehyde and m- chlorobenzylalcohol
0%
c) m- chlorobenzylalcohol and m-hydroxy benzylalcohol
0%
d) potassium m-chlorobenzoate and m-chlorobenzyl alcohol
Explanation
Answer:(d)
Q.10
Aryl halides are less reactive towards nucleophilic substitution reaction as compared to alkyl halides due to ... [ IIT 1990]
0%
a) the formation of less stable carbonium ion
0%
b) resonance stabilization
0%
c) longer carbon-halogen bond
0%
d) the inductive effect
Explanation
Answer:(b)
Q.11
Fluorobenzene (C6H5F) can be synthesised in the laboratory ...[ AIEEE 2006]
0%
a) by heating phenol with HF and KF
0%
b) from aniline by diazotisation followed by heating the diazonium salt with HBF4
0%
c) by direct fluorination of benzene with F2 gas
0%
d) by reacting bromobenzene with NaF solution
Explanation
Answer:(b)
Q.12
Isobutyl magnesium bromide with dry ether and absolute alcohol gives ... [ IIT 1995]
0%
0%
b)
0%
c)
0%
d)
Explanation
Answer:(d)
Q.13
Among the following the one that gives positive iodoform test upon reaction with I2 and NaOH is ...[ AIEEE 2006]
0%
a) CH3CH2CH(OH)CH2CH3
0%
b) C6H5CH2CH2OH
0%
c) PhCHOHCH3
0%
d)
Explanation
Answer:(c)
Q.14
nsider the following reaction Identify the structure of the major product 'X'
0%
a)
0%
b)
0%
c)
0%
d)
Explanation
Answer:(b)
Q.15
The reaction of chloroform with alc. KOH and p-toluidine forms: [AIEEE 2003]
0%
a)
0%
b)
0%
c)
0%
d)
Explanation
Answer:(b)
Q.16
20% of aqueous solution of sodium chloride containing ethyl alochol on electrolysis gives
0%
a) chloroform
0%
b) acetaldehyde
0%
c) ethyl chloride
0%
d) sodium ethonate
Explanation
Answer:(a)
Q.17
Most readily hydrolysed is
0%
a) C6H5Cl
0%
b) (C6H5)2CHCl
0%
c) C6H5CH2Cl
0%
d) (C6H5)3CCl
Explanation
Answer:(d)
Q.18
Following compounds are given (i) CH3CH2OH (ii) CH3 COCH3 (iv) CH3OH Which of the above compound(s) , on being warmed with iodine solution and NaOH, will give iodoform?
0%
a) (i), (iii) and (iv)
0%
b) Only (ii)
0%
c) (i), (ii) and (iii)
0%
d) (i) and (ii)
Explanation
Answer:(c)
Q.19
When a solution of AgNO3 is added to pure CCl4
0%
a) Curdy white precipiitate is formed
0%
b) no precipitate is formed
0%
c) a pale yellow precipitate is form
0%
d) none of the above
Explanation
Answer:(b)
Q.20
Which of the following reagent is not used for preparation of alkyl halid from from an alcohol
0%
a) PCl5
0%
b) NaCl
0%
c) SOCl2
0%
d) HCl + ZnCl2
Explanation
Answer:(b)
Q.21
Carbon tetrachloride on treatment with Fe/H2O gives
0%
a) chloroform
0%
b) chloromethane
0%
c) methane
0%
d) mthyl chloride
Explanation
Answer:(a)
Q.22
Ethyl iodide on treatment with alcohol potash gives
0%
a) ethyl alcohol
0%
b) methyl alcohol
0%
c) ethylene
0%
d) acetylene
Explanation
Answer:(c)
Q.23
Methyl magnesium iodide on treatment with D2O furnishes a hydrocarbon, alongwith Mg(OD)I. The hydrocarbon is
0%
a) CH3D
0%
b) CH3CH2D
0%
c) CH4
0%
d) none of above
Explanation
Answer:(a)
Q.24
For the carbylamine reaction we need hot alcoholic KOH and
0%
a) any amine and chloroform
0%
b)any monoalkyl amine and trichloro methane
0%
c) a primary amine and an alyl halide
0%
d) chloroform and silver powder
Explanation
Answer:(b)
Q.25
Which statement is correct
0%
a) C2H5Br reacts with alcoholic KOH to form C2H5OH
0%
b) C2H5Br when treated with sodium ethoxide forms diethyl ether
0%
c) C2H5Br when treated with metallic sodium gives ethane
0%
d) C2H5Br with AgCN forms ethyl cyanide
Explanation
Answer:(b)
Q.26
1,2-dimromoethane is added to prevent deposition of lead metal in
0%
a) electric cell
0%
b) wtare pipes
0%
c) petrol engine
0%
d) electric heater
Explanation
Answer:(c)
Q.27
For the following reaction, the order of reactivity is
0%
a) HI > HCl > HBr
0%
b) HI > HBr > HCl
0%
c) HCl > HBr > HI
0%
d) HBr > HI > HCl
Explanation
Answer:(b)
Q.28
The product formed in the reaction of HX with (CH3)2C = CH2
0%
a) CH3)2CH.CH2X
0%
b) (CH3)2CXCH3
0%
c) CH3)2CXCH2X
0%
d) CH3)2CHCH3
Explanation
Answer:(b)
Q.29
In dihalogen derivatives if two halogenatoms are attached to the same carbon atom, the compound is called
0%
a) gem dihalide
0%
b) vicinal dihalide
0%
c) both (a) and (b)
0%
d) none of these
Explanation
Answer:(a)
Q.30
A sample of chloroform before being used as an anaesthetic is tested by
0%
a) AgNO3 solution
0%
b) Boiling with KOH
0%
c) AgNO3 solution after boiling with alc.KOH
0%
d) Fehling solution
Explanation
Answer:(c)
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page