Q.1
Elimination of HBr from 2-bromobutane results in the formation of [AIEEE 2005]
  • a) equimolar mixture of 1- and 2-butene
  • b) predominantly 2-butene
  • c) predominantly 1-butene
  • d) predominantly 2-butyne
Q.2
Among the following, the molecule with the highest dipole moment is ...[ IIT 2003]
  • a) CH3Cl
  • b) CH2Cl2
  • c) CHCl3
  • d) CCl4
Q.3
Iodoform can be prepared from all except : [ AIEEE 2012]
  • a) isopropyl alcohol
  • b) 3-methyl-2-butanone
  • c) isobutyl alcohol
  • d) ethyl methyl ketone
Q.4
Elimination reaction of 2-Bromo-pentane to form pent-2-ene is (a) β-Elimination reaction (b) Follows Zaitsev rule (c) Dehydrohalogenation reaction (d) Dehydration reaction .... [ NEET 2020]
  • a) (b), (c), (d)
  • b) (a), (b), (d)
  • c) (a), (b), (c)
  • d) (a), (c), (d)
Q.5
The reaction of C6H5CH = CHCH3 with HBr produces ... [ AIPMT 2015
  • a)
    ch-24_qn-3choice_img_no1.png
  • b)
    ch-24_qn-3choice_img_no2.png
  • c) C6H5CH2CH2CH2Br
    ch-24_qn-3choice_img_no4.png
  • d)
Q.6
Which of the following reaction(s) can be used for the preparation of alkyl halides? [ AIPMT 2015] I. CH3CH2OH + HCl ( in presence of anh ZnCl2) → II.CH3CH2OH + HCl → III. (CH3)3COH + HCl → IV. (CH3)2CHOH + HCl ( in presence of anh ZnCl2) →
  • a) I, III and IV
  • b) I and II
  • c) Only IV
  • d) III and IV
Q.7
In the following sequence of reactions, the end product C is .... [ AIPMT 2012]
ch-24_que_no-5_img_no1.png
  • a) acetone
  • b) methane
  • c) acetaldehyde
  • d) ethyl alcohol
Q.8
In a SN2 substitution reaction of the type Which one of the following has the highest relative rate? [ AIPMT 2008]
ch-24_que_no-6_img_no1.png
  • a) CH3CH2CH2Br
    ch-24_qn-6choice_img_no3.png
  • b) CH3CH2Br
    ch-24_qn-6choice_img_no4.png
  • c)
  • d)
Q.9
Non-sticking frying pans are coated with ... [ ISM 1993]
  • a) ethylene
  • b) styrene
  • c) tetrafluoroethylene (Teflon)
  • d) chlorofluoro methane
Q.10
The -OH group of an alcohol or the -COOH group of a carboxylic acid can ne replaced by -Cl using ...[ AIPMT 2004]
  • a) phosphorous pentachloride
  • b) hypochlorous acid
  • c) chlorine
  • d) hydrochloric acid
Q.11
Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere? [ AIPMT 2004]
  • a) polyhalogens
  • b) Ferrocenes
  • c) Fullerens
  • d) Freons
Q.12
Reactivity order of halides for dehydrohalogenation is ...[ AIPMT 2002]
  • a) R-F > R - Cl > R - Br > R - I
  • b) R - I > R - Br > R - Cl > R - F
  • c) R - I > R - Cl > R - Br > R - F
  • d) R - F > R - I > R - Br > R - Cl
Q.13
An organic compound A[C4H9Cl] on reaction with Na/diethyl ether gives a hydrocarbon which on monochlorination gives a hydrocarbon which on monochlorination gives only one chloro derivative, then A is [AIPMT 2001]
  • a) t-butyl chloride
  • b) s-butyl chloride
  • c) iso- butyl chloride
  • d) n- butyl chloride
Q.14
Gammexane is [ AIPMT 1999]
  • a) chlorobenzene
  • b) benzyl chloride
  • c) bromobenzene
  • d) benzene hexachloride
Q.15
(CH3)3CMgCl on reaction with D2O gives ...[ IIT 1997]
  • a) (CH3)3CD
  • b) (CH3)3OD
  • c) (CD3)3CD
  • d) (CD3)3OD
Q.16
2-bromopentane is heated with potassium ethoxide in ethanol. the major prodct obtained is ...[ AIPMT 1998]
  • a) 1-ethoxypentane
  • b) pentene-1
  • c) trans - pentene - 2
  • d) cis-pentene-2
Q.17
The alkyl halide is converted into an alcohol by ... [ AIPMT 1997]
  • a) addition
  • b) substitution
  • c) dehydrohalogenation
  • d) elimination
Q.18
When chlorine is passed through propene at 400°C, which of the following is formed? [ AIPMT 1993]
  • a) PVC
  • b) Allyl chloride
  • c) Nickel chloride
  • d) 1, 2-dichloro ethane
Q.19
Industrial preparation of chloroform employs acetone and ... [AIPMT 1993]
  • a) phosgene
  • b) clacium hypochlorite
  • c) chlorine gas
  • d) sodium chloride
Q.20
When hydrochloric acid gas is treated with propene in presence of benzoyl peroxide, it gives ... [ AIPMT 1993]
  • a) 2-chloropropane
  • b) alkyl chloride
  • c) no reaction
  • d) n- propyl chloride
Q.21
Chlorobenzne reacts with Mg in dry ether to give a compound [A] which further reacts with ethanol to yiled .... [ AIPMT 1993]
  • a) phenol
  • b) benzene
  • c) ethyl benzene
  • d) phenyl ether
Q.22
In compound 'X' all the bond angles are exactly 109°28', 'X' is ... [ AIPMT 1991]
  • a) Chloromethane
  • b) Carbon tetrachloride
  • c) Iodoform
  • d) Chloroform
Q.23
The Cl- C - Cl angle in 1,1,2,2-tetra-chloroethane and tetrachloromethae will be about ...[ AIPMT 1988]
  • a) 120° and 109°28'
  • b) 90° and 109.5°
  • c) 109.5° and 90°
  • d) 109.5° and 120°
Q.24
What products are formed when the following compound is treated with Br2 in the presence of FeBr3? [ AIPMT 2014]
ch-24_que_no-23_img_no1.png
  • a)
    ch-24_qn-23choice_img_no1.png
  • b)
    ch-24_qn-23choice_img_no2.png
  • c)
    ch-24_qn-23choice_img_no3.png
  • d)
    ch-24_qn-23choice_img_no4.png
Q.25
Fires result from the combustion of alkali metals can be extinguished by ... [ KCET 1994]
  • a) CCl4, ,
  • b) sand
  • c) water
  • d) kerosene
Q.26
Identify the set of reagents/reaction conditions 'X' and 'Y' in the following set of transformations: [IIT 2002]
  • a) X = dilute NaOH aq: 20°C Y = HBr/acetic acid: 20°C
  • b) X = conc. alc. NaOH; 80°C Y = HBr/ acetic acid; 20°C
  • c) X = dilute aqueous NaoH; 20°C Y = Br2/CHCl3; 0°C
  • d) X = conc. alc. NaoH; 80°C Y = Br2/CHCl3; 0°C
Q.27
Which of the following undergoes nucleophilic substitution exclusively by SN1 mechanism? [ AIPMT 2005]
  • a) Benzyl chloride
  • b) Ethyl chloride
  • c) Chlorobenzene
  • d) Isopropyl chloride
Q.28
If chloroform left open in air in presence of sun-rays ... [ MLNR 1994]
  • c) polymerization takes place
  • a) explosion takes place
  • b) poisonous phosgene gas is formed
  • d) no reaction takes place
Q.29
Which is finally produced when acetylene reacts with HCl ...
  • a) CH2 = CHCl
  • b) CH3CHCl2
  • c) ClCH=CHCl
  • d) None of these
Q.30
Phenol is heated with CHCl3 and alcoholic KOH when salicylaldehyde is produced. The reaction is known as
  • a) Rosenmund's reaction
  • b) Reimer Tiemann reaction
  • c)
  • d)
0 h : 0 m : 1 s