1. : Resonance energy of benzene is
(A) 100 kJ/mol
(B) 150 kJ/mol
(C) 200 kJ/mol
(D) 300 kJ/mol
2. : Alkaline KMnO4 oxidizes acetylene to which of the following?
(A) Acetic acid
(B) Glyoxal
(C) Oxalic acid
(D) Ethylene glycol
3. : The hemolytic fission of hydrocarbon results in the formation of
(A) Carbocation
(B) Carbene
(C) Carboanion
(D) Free radical
4. : Which reactions can be used to prepare alkane from an alkyl halide?
(A) Wurtz reaction
(B) Kolbe reaction
(C) Fittig reaction
(D) None of these
5. : Which cannot be prepared by Wurtz reaction?
(A) C2H6
(B) C4H10
(C) C3H8
(D) CH4
6. : Which alkanes cannot be synthesized by Kolbe reaction of sodium salt of carboxylic acid?
(A) Butane
(B) Hexane
(C) Ethane
(D) Methane
7. : Cetane is a _________.
(A) n-Hexane
(B) n-Hexadecane
(C) n-Octane
(D) n-pentadecane
8. : Coal is mainly a source of
(A) Aromatic compounds
(B) Cyclohexanes
(C) Inorganic compounds
(D) Aliphatic compounds
9. : Which is not present in crude naphtha?
(A) Gasoline
(B) Petroleum ether
(C) Paraffin wax
(D) Hexane
10. : What is an Octane number of iso-octane?
(A) 70
(B) Zero
(C) 1
(D) 100
11. : Petroleum is mainly a source of
(A) Inorganic compounds
(B) Aliphatic compounds
(C) Aromatic compounds
(D) Cyclohexanes
12. : Gasoline contains hydrocarbons in the range
(A) C-5 to C-8
(B) C-12 to C-15
(C) C-4 to C-6
(D) C-7 to C-12
13. : How Successive alkanes differ?
(A) CH
(B) CH2
(C) CH3
(D) C2H5
14. : Which reactions can be employed to get unsymmetrical alkanes in good yield?
(A) Corey-House reaction
(B) Wurtz reaction
(C) Birch reaction
(D) None of A, B, and C
15. : Alcoholic solution of caustic potash is a specific reagent for which technique?
(A) Dehydration
(B) Hydration
(C) Dehydrogenation
(D) Dehydrohalogenation
16. : According to ____, When an alkyl halide is treated dry ether, a symmetry alkane with Na in dry ether, a symmetry alkane is obtained.
(A) Wurtz reaction
(B) Grignard reaction
(C) Fischer-Tropsch reaction
(D) None of A, B, and C
17. : The reduction of an alkyne to alkene using Lindlar’s catalyst results into
(A) A mixture obtained by syn and anti-addition of hydrogen
(B) Anti-addition of hydrogen atoms
(C) Syn addition of hydrogen atoms
(D) None of A, B, and C
18. : The addition of HCl to 2-pentene gives which of the following?
(A) 2-chloropentane
(B) 3-chloropentane
(C) 2-chloropentyne
(D) 2-chloro-2-methyl butane
19. : When propyne is treated with aqueous H₂SO4 in the presence of HgSO4, Which is the functional isomer of the major product obtained?
(A) Propanal
(B) propan-2-ol
(C) Propanol
(D) Acetone
20. : What is the relative order of stability of carbocations RC=CH₂, RCH2 and RCH=CH RCH CH?
RCH=CH” onclick=”checkAnswer(‘q20’, ‘RC= CH₂ > RCH₂ >RCH=CH’)”> (A) RC=CH₂ < RCH₂ > RCH=CH
RCH₂ >RCH=CH’)”> (B) RC CH₂ < RCH₂ < RCH=CH
RCH₂ < RCH=CH" onclick="checkAnswer('q20', 'RC= CH₂ > RCH₂ >RCH=CH’)”> (C) RC=CH₂ > RCH₂ < RCH=CH
RCH₂ >RCH=CH” onclick=”checkAnswer(‘q20’, ‘RC= CH₂ > RCH₂ >RCH=CH’)”> (D) RC= CH₂ > RCH₂ >RCH=CH
21. : Which is most suitable reagent to distinguish compound (III) from the rest of the compounds?
(I) CH3C≡CCH3
(II) CH3CH2CH2CH3
(III) CH3CH2C=CH
(IV) CH3-CH=CH-CH3
22. : __________ proved that all the six hydrogen atoms in benzene are equivalent?
(A) Ladenburg
(B) Kekule
(C) Faraday
(D) Wohler
23. : Each of the following compound aromatic excluding which of the following?
(A) Benzene
(B) Cyclopentadienyl cation
(C) Naphthalene
(D) Cyclopentadienyl anion
24. : Sodium propionate on decarboxylation with soda-lime gives ______.
(A) Propane
(B) Pentane
(C) Butane
(D) Ethane
25. : Ethyne can be prepared from a single step from
(A) Calcium carbide
(B) Ethylene bromide
(C) Ethylidene bromide
(D) All of A, B, and C
26. : Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives _____________ .
(A) Benzoic acid
(B) p-cresol
(C) 2,4-dihydroxy toluene
(D) o-cresol
27. : Among the following statements on the nitration of aromatic compounds, the false one is
(A) The rate of nitration of benzene is almost the same as that of hexadeutero-benzene
(B) The rate of nitration of toluene is greater than that of benzene
(C) The rate of nitration of benzene is greater than that of hexadeutero benzene
(D) Nitration is an electrophilic substitution
28. : Nitrobenzene can be prepared from benzene by using a mixture of conc. HNO3 and conc. H2SO4. In the nitrating mixture, as a/an
(A) Base
(B) Electrophile
(C) Oxidizing agent
(D) Acid
29. : The electrophile in the sulphonation of benzene is
(A) SO2
(B) SO3H
(C) HSO4
(D) SO3
30. : Benzene on ozonolysis yields
(A) Ethanal
(B) Acetone
(C) Glyoxal
(D) Methanal
31. : Chlorination of an alkane involves the attack of
(A) A base
(B) A free radical
(C) A nucleophile
(D) An electrophile
32. : Complete oxidation of ethane yields
(A) Ethanal
(B) Ethanol
(C) CO2 and H2O
(D) Ethanoic acid
33. : Which compound is liquid at room temperature?
(A) C4H10
(B) C15H32
(C) C3H8
(D) C20H42
34. : What is the state of hybridization of carbon in methane?
(A) sp
(B) sp3
(C) sp2
(D) dsp2
35. : ___________ is the formation of alkane by the action of Zn dust.
(A) Wittig reaction
(B) Wurtz reaction
(C) Kolbe reaction
(D) Frankland’s reaction
36. : Which catalyst is used in the reduction of carbonyl group to -CH2?
(A) Zn dust
(B) Ni
(C) Pt
(D) Zn/Hg
37. : Which of the following is the process of heating coal in the absence of air?
(A) Cracking
(B) Decarbonization
(C) Decarboxylation
(D) Isomerization
38. : The percentage of carbon is higher in ______.
(A) Peat
(B) Anthracite
(C) Lignite
(D) Bituminous
39. : During distillation of coal tar, anthracene is mainly present in
(A) Light oil
(B) Heavy oil
(C) Middle oil
(D) Green oil
40. : (CH3)3CMgCl on reaction with D₂O produces
(A) (CD3)CD
(B) (CH3)3COD
(C) (CH3)3CD
(D) (CD3)3OD
41. : 1-Butyne on oxymercuration-demercuration would give
(A) Propanol and methanol
(B) Butanal
(C) Butanone
(D) Propanoic acid and formic acid
42. : Preparation of vegetable ghee involves
(A) Hydrogenation
(B) Hydroxylation
(C) Dehydrogenation
(D) Halogenation
43. : Ethyl bromide reacts with Zn and HCl to form
(A) Ethene
(B) Propyne
(C) Ethyne
(D) Ethane
44. : The most reactive hydrocarbon is
(A) Ethene
(B) Heptane
(C) Acetylene
(D) Ethane
45. : Toluene is o/p-orienting with respect to an electrophilic substitution reaction due to
(A) +I effect of the methyl group
(B) +I as well as +R effect of the methyl group
(C) Hyperconjugation between the methyl group and phenyl ring
(D) +R effect of the methyl group