Organic Chemistry Some Basic Principles and Techniques Test

Result

Organic Chemistry Some Basic Principles and Techniques Test - 70

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Weekly Quiz Competition

Question 1
1 / -0

During the estimation of C and H, the $$CO_{2}$$ produced is absorbed in

A
$$KOH$$

B
$$Anhydrous\ CaCl_2$$

C
$$CuO$$

D
$$O_2$$

Solution
Question 2
1 / -0

How may $$\pi$$-bonds in following molecules:
a) $$C_{2}H_{6}$$ b) $$C_{2}H_{4}$$ c) $$C_{2}H_{2}$$

A
$$0$$,$$2$$,$$1$$

B
$$0$$,$$1$$,$$2$$

C
$$2$$,$$0$$,$$1$$

D
$$1$$,$$1$$,$$1$$

Solution
Question 3
1 / -0

The number of $$\pi $$ electrons in butadiene is

A
2

B
4

C
6

D
8

Solution
Question 4
1 / -0

The members of homologous series have.......

A
different general formulae

B
different molecular weight

C
different methods of prepartion

D
different chemical properties
Question 5
1 / -0

How many $$\sigma$$ & $$\pi$$ bonds are present in $$C_{2}H_{4}$$ molecule?

A
$$5\sigma$$, $$1\pi$$

B
$$1\sigma$$, $$5\pi$$

C
$$6\sigma$$, $$1\pi$$

D
$$8\sigma$$, $$1\pi$$
Question 6
1 / -0

The IUPAC name of the compound is:

A
2 - Ethyl - 1 , 1 - dimethylcyclopentane

B
1 - Ethyl - 2 , 2 - dimethylcyclopentane

C
1 , 1 - Dimethyl - 2 - ethylcyclopentane

D
2 , 2 - Dimethyl - 1 - ethylcyclopentane

Solution
Question 7
1 / -0

Which of the following diamagnetic species having only $$\pi$$ bond in the vapor phase?

A
$$O_2$$

B
$$O_2^{2-}$$

C
$$B_2$$

D
$$C_2$$
Question 8
1 / -0

The cyclic polymerization of methyl acetylene gives mesitylene. The number of sigma bonds in mesitylene is:

A
16

B
12

C
18

D
21

Solution
Question 9
1 / -0

The number of $$\pi $$ - bonds and $$\sigma $$ bonds in the above structure respectively are:

A
8, 5

B
8, 6

C
5, 8

D
5, 13
Question 10
1 / -0

The members of homologous series have:

A
different general formula

B
different molecular weight

C
different methods of preparation

D
different chemical properties

Solution