Mechanism Test

Result

Mechanism Test - 1

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Heterolysis of a carbon-chlorine bond produces

A
Two free radicals

B
Two carbocations

C
One cation and one anion

D
Two carbanions

Solution

In C - Cl bond, the electron pair is carried away by Cl atom due to higher electronegativity.
C - Cl → C⁺ + Cl^-
Hence, carbon cation and chlorine anion are formed.
Question 2
1 / -0

Which of the following is an electrophilic reagent?

A
H₂O

B
NH₃

C
OH^-

D
NO⁺₂

Solution

Electron deficient species act as electrophiles i.e., NO⁺₂.
Question 3
1 / -0

Which of the following sets of groups contains only electrophiles?

A
NH^-₂, NO⁺₂, H₂O, NH₃

B
F^-,OH^-,NH₃,SO₃

C
NO⁺₂, AlCl₃> SO₃,CH₃C⁺=O

D
NH₃, BF₃> AlCI₃, H₂O

Solution

NO₂⁺,AlCl₃,SO₃and CH₃C⁺= O are electrophiles.
Question 4
1 / -0

Inductive effect involves

A
Displacement of σ-electrons resulting in polarisation

B
Displacement of π-electrons resulting in polarisation

C
Delocalisation of σ-electrons

D
Delocalisation of π-electrons

Solution

Due to displacement of a-electrons towards more electronegative atom the bond becomes polar. The polar bond induces polarityto the adjacent bonds, this is inductive effect.
Question 5
1 / -0

The increasing order of electron donating inductive effect of alkyl groups is

A
- H < - CH₃ < - C₂H₅ < - C₃H₇

B
- H > - CH₃ > - C₂H₅ > - C₃H₇

C
- H < - C₂H₅ < - CH₃ < - C₃H₇

D
-H>-C₂H₅>-CH₃>-C₃H₇

Solution

The order of +I effect of alkyl group is given as
Question 6
1 / -0

Inductive effect of which atom or group is taken as zero to compare inductive effect of other atoms?

A
Hydrogen

B
Chlorine

C
Carbon

D
Oxygen

Solution

Hydrogen does not exert I-effect. Its inductive effect is taken as zero. Electron releasing or electron withdrawing capability of other atoms are compared by hydrogen.
Question 7
1 / -0

Maximum -I effect is exerted by the group

A
-C₆H₅

B
-OCH₃

C
-Cl

D
-NO₂

Solution

-NO₂ shows maximum electron with drawing or - I effect.
Question 8
1 / -0

Which one of the following acids would you expect to be the strongest?

A
I-CH₂COOH

B
CI-CH₂COOH

C
Br-CH₂COOH

D
F-CH₂COOH

Solution

Fluorine is most electronegative atom and exerts maximum -I effect Hence F - CH₂COOH is the strongest acid.
Question 9
1 / -0

Few pairs of molecules are given below. Which bond of the molecule of the pairs is more polar?
(i) H₃C - H, H₃C - Br
(ii) H₃C-NH₂,H₃C-0H
(iii) H₃C - OH, H₃C - SH
(iv) H₃C - Cl, H₃C - Br

A
C-Br,C-N,C-O,C-Br

B
C-Br,C-O,C-O,C-Cl

C
C-Br,C-N,C-S,C-Cl

D
C-Br,C-O,C-S,C-Br

Solution

(i) Br is more electronegative than H.
(ii) O is more electronegative than N.
(iii) O is more electronegative than S.
(iv) C1 is more electronegative than Br.
Question 10
1 / -0

Which of the following is the correctorder of acidity of carboxylic acids?
(i) CI₃CCOOH > CI₂CHCOOH > CICH₂COOH
(ii) CH₃CH₂COOH > (CH₃)₂CHCOOH > CCH₃)₃CCOOH
(iii) F₂CHCOOH > FCH₂COOH > CICH₂COOH

A
(i) and (ii)

B
(ii) and (iii)

C
(i) and (iii)

D
(i), (ii) and (iii)

Solution

The strength of the acid increases with the inductive effect of the electronegative group attached to it (-I effect). The strength of the acid decreases with the presence of electron releasing group.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Mechanism Test - 1

Result

Mechanism Test - 1

Score

-

Rank

-

SHARING IS CARING

Question 1

Two free radicals

Two carbocations

One cation and one anion

Two carbanions

Solution

Question 2

H2O

NH3

OH-

NO+2

Solution

Question 3

NH-2, NO+2, H2O, NH3

F-,OH-,NH3,SO3

NO+2, AlCl3> SO3,CH3C+=O

NH3, BF3> AlCI3, H2O

Solution

Question 4

Displacement of σ-electrons resulting in polarisation

Displacement of π-electrons resulting in polarisation

Delocalisation of σ-electrons

Delocalisation of π-electrons

Solution

Question 5

- H < - CH3 < - C2H5 < - C3H7

- H > - CH3 > - C2H5 > - C3H7

- H < - C2H5 < - CH3 < - C3H7

-H>-C2H5>-CH3>-C3H7

Solution

Question 6

Hydrogen

Chlorine

Carbon

Oxygen

Solution

Question 7

-C6H5

-OCH3

-Cl

-NO2

Solution

Question 8

I-CH2COOH

CI-CH2COOH

Br-CH2COOH

F-CH2COOH

Solution

Question 9

C-Br,C-N,C-O,C-Br

C-Br,C-O,C-O,C-Cl

C-Br,C-N,C-S,C-Cl

C-Br,C-O,C-S,C-Br

Solution

Question 10

(i) and (ii)

(ii) and (iii)

(i) and (iii)

(i), (ii) and (iii)

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.

H₂O

NH₃

OH^-

NO⁺₂

NH^-₂, NO⁺₂, H₂O, NH₃

F^-,OH^-,NH₃,SO₃

NO⁺₂, AlCl₃> SO₃,CH₃C⁺=O

NH₃, BF₃> AlCI₃, H₂O

- H < - CH₃ < - C₂H₅ < - C₃H₇

- H > - CH₃ > - C₂H₅ > - C₃H₇

- H < - C₂H₅ < - CH₃ < - C₃H₇

-H>-C₂H₅>-CH₃>-C₃H₇

-C₆H₅

-OCH₃

-NO₂

I-CH₂COOH

CI-CH₂COOH

Br-CH₂COOH

F-CH₂COOH