Chemistry XII - Principle of Organic Chemistry

Chemistry XII - Principle of Organic Chemistry

1. Organic compounds having same molecular formula but different structures are called:

a) Isomers
b) x
c) y
d) z

2. The state of hybrdization of carbon atom in ethene is:

a) Sp2
b) x
c) y
d) z

3. Alkenes show geometric isomersisom due to restricted rotation around a carbon - carbon

a) x
x
b) y
c) z
d) Double bond

4. Heating an organic compound in the absence of oxygen and in the presence of sio2/Al2o3 as a catalyst is called

a) x
b) y
c) cracking
d) z

5. A group of atoms which confers characteristics properties to an organic compound is called

a) Functional group
b) x
c) y
d) z

6. 2-Butene is position isomer of

a) x
b) y
c) 1-Butene
d) z

7. Carbonal functional group is present in both alclehydes and

a) Ketones
b) x
c) y
d) z

8. A heterocyclic compound contains an atom other than carbon in its

a) z
b) y
c) x
d) Ring

9. The quality of gasoline can be checked by finding out its

a) z
b) x
c) Octane number
d) y

10. A carboxylic acid contains -COOH or Carbooxylic aid group as a

a) Functional group
b) z
c) y
d) x

11. The state of hybridization of carbon atom in methene is :

a) sp3
b) sp2
c) dsp2
d) sp

12. In t-butyl alcohol, the teritary carbon is bonded to :

a) Two hydrogen atom
b) Three hydrogen atom
c) No hydrogen atom
d) One hydrogen atom

13. Which set of hybird orbitals has planar triangular shape :

a) sp2
b) sp3
c) dsp2
d) sp

14. The chemist who synthesized urea from ammonium cyanate was :

a) Berzelius
b) Kolbe
c) Lavoisier
d) Wholer

15. Linear shape is associated with which set of hybird orbitals?

a) sp
b) dsp2
c) sp2
d) sp3

16. A double bond consists of :

a) Two sigma bonds
b) Two pi bonds
c) One sigma and two pi bonds
d) One sigma and one pi bonds

17. Eithers show the phenonenom of :

a) cis-trans isomerism
b) Metamerism
c) Functional group isomerism
d) Position isomerism

18. Select from the following the one which is alcohol

a) CH3-CH2-Br
b) CH3COOH
c) CH3-O-CH3
d) CH3-CH2-OH

19. Ozone reacts with ethene to form

a) x
b) y
c) z
d) Ethene ozonid

20. Mustard gas is a highly boiling

a) x
b) y
c) Liquid
d) z

21. Preparation of vegetable ghee involves :

a) Halogenation
b) Hydroxylation
c) Dehydration
d) Hydrogenation

22. Formula of chloroform is :

a) CH3Cl
b) CCI4
c) CH2CI2
d) CHCI3

23. The presence of a double bond in a compound is the sign of :

a) Saturation
b) None
c) Substitution
d) Unsaturation

24. Vinyl acetylene combines with HCI to form :

a) Poly acetylene
b) Benzene
c) Chloroprene
d) Divinyl acetylene

25. The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with the rule :

a) Hund's rule
b) Markownikov's rule
c) Pauli's Exclusion Principle
d) Auf bau Principle

26. Synthesis rubber is made by polymerization of :

a) Choloroform
b) Acetylene
c) Divinylacetylene
d) Butene

27. Beta-Beta'-dichloroethyl Sulpide is commonly known as :

a) Bio-gas
b) Laughing gas
c) Phosgene gas
d) Mustard gas

28. When methane reacts with CI2 in the presence of diffused light the products Obtained are :

a) Chioroform Only
b) Chlomethane
c) Carbon tetrachloricle
d) Mixture of a,b,c

29. Which one of the following gases is used artifical ripening of fruits

a) Ethene
b) Propane
c) Ethyne
d) Methane

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