Q.1. Hybridization of carbon in ethane is
(A) sp³
(B) sp²
(C) sp
(D) sp³d²
Ans :- (A)
Q.2. The hybridisation of carbon in diamond is
(A) sp³
(B) sp²
(C) sp
(D) dsp²
Ans :- (A)
Q.3. Ethylidene chloride is a/an …………
(A) Vic – dihalide
(B) gem – dihalide
(C) α – elimination
(D) racemisation
Ans :- (B)
Q.4. Which one of these is formed on heating sodium phenoxide with ethyl iodide ?
(A) Phenetole
(B) ethyl phenyl alcohol
(C) phenone
(D) none of these
Ans :- (A)
Q.5. Which of the following molecules has highest dipole moment ?
(A) CH₃Cl
(B) CH₂Cl₂
(C) CHCl₅
(D) CCl₄
Ans :- (A)
Q.6. A primary alkyl halide would prefer to under go ……
(A) Sₙ1 reaction
(B) Sₙ2 reaction
(C) α- elimination
(D) racemisation
Ans :- (B)
Q.7. The chemical formula of tear gas is
(A) COCl₂
(B) CO₂
(C) Cl₂
(D) CCl₃NO₂
Ans :- (D)
Q.8. The compound having general formula CₙH₂ₙ+₂ is
(A) Alkene
(B) Alkyne
(C) Alkane
(D) None of these
Ans :- (C)
Q.9. Which of the following reactions follows markovnikov’s rule ?
(A) C₂H₄ + HBr
(B) C₃H₆ + Cl₂
(C) C₃H₆ + HBr
(D) C₃H₆ + Br₂
Ans :- (C)
Q.10. Primary, secondary and tertiary alcohols are distinguished by ?
(A) Oxidation method
(B) Lucas reagent method
(C) Victor meyer’s method
(D) All of these
Ans :- (D)
Q.11. Organic compound must contain an element
(A) Oxygen
(B) Carbon
(C) Hydrogen
(D) nitrogen
Ans :- (B)
Q.12. Alkene given which of the following reactions ?
(A) Addition reaction
(B) Substitution reaction
(C) Both ‘A’ and ‘B’
(D) None of these
Ans :- (C)
Q.13. Criteria for purity of organic solid is
(A) boiling point
(B) melting point
(C) specific gravity
(D) none of these
Ans :- (B)
Q.14. The alkyl halide is converted in to an alcohol by
(A) elimination
(B) dehydrohalogenation
(C) addition
(D) substitution
Ans :- (D)
Q.15. Good conductor of electricity and heat is
(A) Anthracite coke
(B) Diamond
(C) Graphite
(D) Charcoal
Ans :- (C)
Q.16. Which of the following undergoes nucelophilic substitution exclusively by Sₙ 1 mechanism ?
(A) ethyl chloride
(B) isopropyl chloride
(C) chlorobenzene
(D) benzyl chloride
Ans :- (B)
Q.17. The antiseptic action of CHI₃ is
(A) due to ido form
(B) due to liberation of free iodine
(C) partially due to iodine and partially due to CHI₃
(D) None of these
Ans :- (B)
Q.18. Alkyl halide is converted in to alcohol by
(A) elimination reaction
(B) addition reaction
(C) substitution reaction
(D) all of these
Ans :- (C)
Q.19. Toluene reacts with chlorine in the presence of sunlight and gives
(A) Benzalchloride
(B) Benzyl chloride
(C) p – chlorobenzene
(D) O – Chlorotoluene
Ans :- (A)
Q.20. The hybridisation of carbon in diamond is
(A) sp³
(B) sp²
(C) sp
(D) dsp²
Ans :- (A)
Q.21. The product of the reaction between primary amine , Chloroform and alcoholic KOH is
(A) Cyanide
(B) isocyanide
(C) nitroamine
(D) alkane
Ans :- (B)
Q.22. A Grignard reagent is prepared by the action of magnesium in dry ether on ?
(A) C₂H₅OH
(B) C₂H₆
(C) C₂H₅Cl
(D) C₂H₅CN
Ans :- (C)
Q.23. Number of π bond in ethyne is
(A) one
(B) two
(C) three
(D) four
Ans :- (B)
Q.24. Which of the following compounds will have highest melting point ?
(A) Chlorobenzene
(B) O – Dichlorobenzene
(C) m – Dichlorobenzene
(D) p – Dichlorobenzene
Ans :- (D)
Q.25. DDT is formed by the reaction between
(A) Benzene and Chlorobenzene
(B) Chloral and Chlorobenzene
(C) Chloral and Benzene
(D) Chlorobenzene and chlorine
Ans :- (B)
Q.26. Which of the following is most reactive towards aqueous NaOH ?
(A) C₆H₆Cl
(B) C₆H₅CH₂Cl
(C) C₆H₅Br
(D) BrC₆H₄Br
Ans :- (B)
Q.27. Reaction between alkyl halide and sodium metal is called
(A) Wurtz reaction
(B) Kolbe’s reaction
(C) clem menson’s reaction
(D) none of these
Ans :- (A)
Q.28. Which of the following haloalkanes reacts with apoeous KOH most easily ?
(A) 1- Bromo butane
(B) 2- Bromo butane
(C) 2- bromo – 2- methyl propane
(D) 2- Chlorobutane
Ans :- (C)
Q.29. Ethyl alcohol is obtained whn ethyl chloride is boiled with
(A) alcoholic KOH
(B) aqueous KOH
(C) water
(D) aqueous KMnO₄
Ans :- (B)
Q.30. Valency of carbon is
(A) 1
(B) 2
(C) 3
(D) 4
Ans :- (D)
Q.31. Single bond length between carbon – carbon is
(A) 1.34 A
(B) 1.20 A
(C) 1.54 A
(D) None of these
Ans :- (C)
Q.32. The IUPAC name of CH₃OC₂H₅ is
(A) Methoxy methane
(B) Ethoxy ethane
(C) Ethoxy methane
(D) None of these
Ans :- (D)
Q.33. In which of the following allotropes of carbon percentage of carbon is maximum ?
(A) Wood charcoal
(B) Coconut charcoal
(C) Graphite
(D) none of these
Ans :- (C)
Q.34. Which among the following give allyl Chloride on hydrohalogenation reaction
(A) Propadiyne
(B) Propylene
(C) Allyl alcohol
(D) Acetone
Ans :- (A)
Q.35. Number of π bond in ethyne is
(A) one
(B) two
(C) three
(D) four
Ans :- (B)
Q.36. Phosgene is the common name of
(A) Phophoryl chloride
(B) Thionyl chloride
(C) Carbon dioxide and phosphene
(D) Carbonyl chloride
Ans :- (D)