Organic Chemistry Some Basic Principles and Techniques Test

Result

Organic Chemistry Some Basic Principles and Techniques Test - 44

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Weekly Quiz Competition

Question 1
1 / -0

$$ \xrightarrow [ { H }^{ + } ]{ } A$$, $$A$$ is:

A

B

C

D

Solution
Question 2
1 / -0

Compound A is:

A
$$CH_3-\overset{\overset{OH}{|}}{C}-CH-\overset{\overset{O}{||}}{C}-OC_2H_5$$

B
$$CH_3-\overset{\overset{O}{||}}{C}-CH=\overset{\overset {OH}{|}}{C}-OC_2H_5$$

C
$$CH_3-\overset{\overset{OD}{|}}{C}=CH-\overset{\overset{O}{||}}{C}-OC_2H_5$$

D

Solution
Question 3
1 / -0

Predict the product of reaction below:

A

B

C

D

Solution
Question 4
1 / -0

In the given equation X is?

A

B

C

D

Solution

$$Br_2 | FeBr_3 $$ is a nucleophilic substitution reagent where $$FeBr_3$$ is a lewis acid. It attacks the more electron deficient site so it attaches by the carbon.
Question 5
1 / -0

A

B

C

D
Question 6
1 / -0

An organic compound 'X' is a constituent of wine. On heating with acidified potassium dichromate it gives a compound 'Y' which gives brisk effervescence with sodium bicarbonate. Identify 'X' and 'Y'

A
$$C_2H_6, CH_3COOH$$

B
$$CH_3COOH, C_2H_5OH$$

C
$$CH_3COOH, C_2H_4$$

D
$$C_2H_5OH, CH_3COOH$$

Solution

$$(A)\ C_{2}H_{6}, CH_{3}COOH$$
Because wine contains $$C_{2}H_{2}$$ and on heating it gives $$y$$
$$C_{2}H_{6}\xrightarrow [ potassium ]{ \Delta } CH_{3}COOH\rightarrow Na_{2}HCO_{3}$$
dichromats (acidified) $$\downarrow$$
gives brisk effervesce
Question 7
1 / -0

$$R-\overset{O}{\overset{||}{C}}-Cl+N\overset{-}{u}\rightarrow R-\overset{O}{\overset{||}{C}}-Na+Cl^-$$
The correct expansion for the below reactions is?

A
$$A\xrightarrow{H_3O^+}\,\xrightarrow[\Delta]{NH_3}\,\xrightarrow[\Delta]{KOBr}B$$

B

C

D
$$R-\overset{O}{\overset{||}{C}}-Cl\xrightarrow{-Cl^-}\,R-\overset{O}{\overset{||}{C^{\oplus}}}\xrightarrow{N\overset{-}{u}}-\overset{O}{\overset{||}{C}}-Nu$$

Solution

Nucleophile being negative attack the deficit C of carbonyl group and after that the electron withdrawing group Cl separated with two electrons with it and cabonyl group again forms. Tihs reaction is nucleophilic addition reaction to a compound containing carbonyl group.
Question 8
1 / -0

What is the major product of the reaction ?

A

B

C

D

Solution

The (i) reaction is nucleophilic addition reaction in presence of Grignard's reagent and the (ii) reaction is an electrophilic substitution reaction.
Product in option $$A$$ is formed.
Question 9
1 / -0

Compound $$(B)$$ is:
$$C_6H_5(CH_2)_5\overset{\overset{O}{||}}{C}-Cl\overset{AlCl_3}{\underset{CS_2}{\longrightarrow}}\underset{C_{12}H_{14}O}{(A)}$$$$\overset{KMnO_4,D}{\underset{H_3O^{\oplus}}{\longrightarrow}}(B);$$

A

B

C

D
Question 10
1 / -0

Which of the following represents an intermediate formed in reaction of toluene and chlorine at elevated temperature in sunlight?

A

B

C

D

Solution

Refer to Image 1)
This reaction occurs via radical mechanism and intermediate is (Refer to Image 2).