Organic Chemistry Some Basic Principles and Techniques Test

Result

Organic Chemistry Some Basic Principles and Techniques Test - 67

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Weekly Quiz Competition

Question 1
1 / -0

How many number of enolic form are possible for the compound

A
1

B
2

C
3

D
4

Solution

(Refer to Image)
So there are three enolic forms possible for this compound. Keto-enol conversion takes place where there is a presence of alpha-Hydrogen.
Question 2
1 / -0

In the given compound, the number of $$\sigma$$ and $$\pi$$ bonds, respectively, are:

A
$$19, 11$$

B
$$19, 5$$

C
$$13, 11$$

D
$$7, 3$$

Solution
Question 3
1 / -0

The species having no p$$\pi$$ - p$$\pi$$ bond is:

A
ClO$$_3$$

B
SO$$_3$$

C
COCl$$_2$$

D
NO$$_2$$

Solution
Question 4
1 / -0

Main axis of diatomic molecule is z. The orbitals $${p_x}$$ and $${p_y}$$ overlap to form

A
$$\pi $$ molecular orbital

B
$$\sigma $$ molecular orbital

C
$$\delta $$ molecular orbital

D
No bond will be formed.

Solution
Question 5
1 / -0

How many pi (n) electrons are there in the following molecules?

A
4

B
6

C
8

D
10
Question 6
1 / -0

Among the following:
The correct order of reactivity towards $$ArS_N$$ mechanism is -

A
$$I > III > II >IV$$

B
$$I > II > IV >III$$

C
$$III > II > IV >I$$

D
$$I > IV > II >III$$
Question 7
1 / -0

The correct statement related to $$IUPAC$$ nomenclature is:

A
If 2 or more chains of equal length are seen in the compound then the chain with the minimum number of side chains is preferred.

B
If double and triple bonds are at symmetrical positions in a compound then triple bond gets lower preference.

C
The correct $$IUPAC$$ name of $$CH_{3}COC_{2}H_{5}$$ is ethyl ketone.

D
As far as possible, the $$IUPAC$$ name of a compound is written as a single word.
Question 8
1 / -0

The IUPAC name of the following compound is:

A
N,N-dimethylmethanal

B
N,N-dimethylmethanamide

C
N,N-dimethylcarbaldehyde

D
None

Solution
Question 9
1 / -0

In which of the following pair of elements the pi-bond formation tendency is maximum.

A
S and O

B
Si and O

C
P and O

D
Cl and O

Solution
Question 10
1 / -0

In the reaction of HBr to propene in presence of peroxide most stable free radical formed is

A
$${\text{C}}{{\text{H}}_{\text{3}}}\mathop {\text{C}}\limits^{\bullet} {\text{HC}}{{\text{H}}_{\text{3}}}\,$$

B
$$\,{\text{BrC}}{{\text{H}}_{\text{2}}}\mathop {\text{C}}\limits^{ \bullet } {\text{HC}}{{\text{H}}_{\text{3}}}$$

C
$$\mathop {\text{C}}\limits^{ \bullet } {{\text{H}}_{\text{2}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{C}}{{\text{H}}_{\text{3}}}$$

D
$$\mathop {\text{C}}\limits^{\bullet } {{\text{H}}_{\text{2}}}\mathop {\text{C}}\limits_{\mathop {{{ \displaystyle \text {Br}}}}\limits^{\text{|}} } {\text{HC}}{{\text{H}}_{\text{3}}}$$

Solution