QUIZ FIITJEE ALKANE

1 Which one of the following compounds has maximum octane number?

(A) n-Hexane (B) n-Heptane
(C) 2, 2-Dimethyl pentane (D) 2, 2,4-Trimethylpentane

2 Anti-knocking compound used for unleaded gasoline is

(A) BXT (B) TBA
(C) MTBE (D) all of these

3 Which among the following alkanes cannot be prepared by reduction of alkyne?

(A) Methane (B) Isobutane
(C) Neopentane (D) Ethane

4 Which among the folowing reagents converts alkyl halide into alkane?
(A)Bu,SnH (B) Na/dry ether
(C) R,CulL0 (D) All of these

5 In the reaction:
)TsCI
CH, -CH, -OH JLAH,
[X] will be
(A) H, C = CH, (B) CH, - CH,- CH,- CH,
(C) CH, - CH, (D) CH,-CH = CH-CH,
6. In the given reaction,

c,H, -C-CH cH, -CH, -CH,

[X] will be:
(A) LIAIH4 (B) NaBH,
(C) Bu,SnH (D) NH, NH, /OH
7. Which among the following compounds will give Wurtz reaction?
(A) H,C = CH- Br (B) C,Hs - Br
(C) H,C = CH- CH, - Br (D) None of these
8 In the given reaction
CH, -CH, -Br ,CH, -CH, -D
(R] is:
(A) BuSnD/ln (B) LIAID,
(C) Mglether followed by D,0 (D) all of these

Which among the following methods gives pure alkane from alkyl halides?
(A) Wurtz reaction (B) Corey- House synthesis
(C) Frankland reaction (D) All of these
10.
Of these three isomeric bicyclic hydrocarbons below, which do you expect to the most
reactive?

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 (U) (IU) (I)
(B) II
(A) I (D) All have same reactivity
(C) II

11 In the given reaction

CH3
H,C
HC CH3 CH(P]
Br Br
(P] is:
CH3 CHg
HgC HgC CHa
(A) H3C CH3 (B) HC
Lí Br Li

HgC CH3 CH,

(c) H,c
Br
CHg (D
Chsc=G=
CH, cHs
12 In commercial gasoline, the type of hydrocarbons which is more desirable is:
(A) branched chain (B) straight chain
(C) linear unsaturated (D) toluene

13 Consider the scheme given below

D.
A

C,H,COCI

CH,-C-CH,

Fumin g
(D]
H,so,
In the above sequence A, B, C, D and E are respectively as follows:

(A)
D,SOD,0, CgHs- C- CgHs, (CH),CCUAICls, CaHs-SO,H, H,o»IA
(B) RMgX followed by D,O, (CH,),CCUAICh, CoHs-SO,H, H,0'A

(C) D,SOJD,0, CgHs-C- CHs. Cos - CH,-CoHs. (CHs),CCVAICI, HPd

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 (D) (CHs)2Zn followed by D,0; CeH,COCsH,, (CH),CIhv; CoHs- SO,CI; H,0A
Comprehension Type
Paragraph for question 14 - 16

3
14. Azulene is
(A) aromatic (B) non-aromatic
(C) benzenoid (D) non- benzenoid
15 When azulene is treated with electrophile, it attacks which position?
(A) position -1 (B) position-4
(C) position -1 and 3 (B) position-1 and4

16. Nucelophile can attack azulene at which position?

(A) position -1 (B) position-2
(C) position -3 (D) position-4

17. Which of the following has minimum boiling point?

(A) n-Butane (B) Iso-butane
(C) 1-Butene (D) 1-Butyne

18. Which one of the following is reduced with Zn-HgHCI to give the corresponding
hydrocarbon?
(A) Ethyl acetate (B) Butan-2-one
(C) Acetamide (D) Acetic acid
19. 2-Methylbutane on reacting with bromine in the presence of sunlight gives mainly:
(A) 1-bromo-2-methylbutane (B) 2-bromo-2-methylbutane
(C) 2-bromo-3-methylbutane (D) 1-bromo-3-methylbutane

20 Of the five isomeric hexanes, the isomer which can give two monochlorenated compounds is
(A) n-hexane (B) 2, 3-dimethylbutane
(C) 2, 2-dimethylbutane (D) 2, methylpentane
21. What will be the produce of the following reaction?
CHz
NBS/hv

Br
CH
(A) (B)

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 Br

CH
C (D)
Br

22 ldentify the produce Y in the following reaction sequence:

CH, -CH, -CO0
A,X Zn-Hg
Ca HCL A
CH, -CH, -cOo
(A) pentane (B) cyclobutane
(C) cyclopentane (D) cyclopentanone

23. Methyl bromide is converted into ethane by heating it in ether medium with:
(A) AI (B) Zn
(C) Na (D) Cu
24 Which of the following has highest knocking property?
(A) Aromatic hydrocarbons (B) Olefins
(C) Branched chain paraffins (D) Straight chain paraffins
25 The compound [X] in the given reaction is:

ICI AnhyA AIClhX

(A) Cas -CI (B) CoHs -|

CI

(C) (D

26 Sequence of carbon-carbon bond length of the following is:

ethane (iü) ethene (ii) ethyne
(A) i > ii > ii (B) ii> i > ii
(C) ii > i >i (D) ii > iü >i
27
The compounds formed at anode in the electolysis of an aqueous solution of CH,COOK are:
(A) CaHe and CO, (B) CH, and CO,
(C) CH, and Ha (D) CH, and CO2
28 In cyclopropane, cyclobutane and cyclohexane, the common group is:
(A) (B) -CH,
(C) -CH

29 2-chloro-3-methylbutane is treated with sodium in etherial solution, then it will give

(A) 2, 4-dimethylhexane (B) 3, 5-dimethylhexane
(C) 2, 3,4, 5-tetramethylhexane (D) 2, 6-dimethyloctane
30. Cycloalkanes are isomeric with
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 (A) alkanes (B) alkenes
(C) alkynes (D) arenes

31 A
dibromo derivative of an alkane reacts with sodium metal to form an alicyclic hydrocarbon.
The derivative is

(A) 1, 1-dibromopropane (B) 2, 2-dibromopropane

(C) 1, 2-dibromopropane (D) 1, 4-dibromopropane

32. In the reaction

Oxidation NaOH R 5oda l m e C
C,H,CH, A

The product C is
(A) CsH;OH (B) CoHs
(C) CsH,COONa (D) CsH,ONa

33 Propyne on passing through red hot copper tube forms

(A) benzene (B) toluene
(C) mesitylene (D) none of these
34 Ethyl benzene cannot be prepared by
(A) Wurtz reaction (B) Wurtz-Fitting reaction
(C) Friedel-Craft's reaction (D) Clemmensen reduction

35 Show how one may accomplish each of the following transformations in a practical manner.
(a) CH, -CHBr-CH, ’CH, -CH, -CH,Br
(b) CH, -CHOH-CH, CH, -CH, - CH,OH
(c) OH OH

***OH

(d) CH, -CH, -C= CH, CH, -CH, -ÇH-CH,OCH,

H3
(e) CH2 H CH,D

CHs

() CH2

36
Give the structure of (A) through () in the following series of reactions:
 CH3
CH- CH -C-C
CH ’ (A) oB)
H,SO,
Zn(Hg)
HCI

C) KMnO, (D)

Br, /hv

()NH (CH)}, COK -(G)

(exces) (E)

NaOCH, HBr

(F) (H)

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