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Tetravalence of Carbon: Shapes of Organic Compounds
1. Arrange the following in the increasing order of electronegativity.
a) sp2 < sp < sp3
b) sp3 < sp2 < sp
c) sp < sp2 < sp3
d) sp3 < sp < sp2
Answer: sp3 < sp2 < sp
2. σ bonds are stronger than π bonds.
a) True
b) False
Answer: True
3. How many σ and π bonds are present in the following molecule?
N≡C-CH-C≡N
a) σ = 5; π = 4
b) σ = 6; π = 3
c) σ = 4; π = 2
d) σ = 3; π = 5
Answer: σ = 5; π = 4
4. What is the valency of carbon?
a) Pentavalent
b) Divalent
c) Trivalent
d) Tetravalent
Answer: Tetravalent
5. What is the hybridization of CH3CH2CH2CN?
a) sp, sp3
b) sp2, sp3
c) sp
d) sp, sp2
Answer: sp, sp3