Aldehydes, Ketones and Carboxylic Acids Test

Result

Aldehydes, Ketones and Carboxylic Acids Test - 6

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Weekly Quiz Competition

Question 1
4 / -1

Predict the major product in the given reaction,

A

B

C

D
Both (a) and (b)

Solution
Question 2
4 / -1

The major organic product in the following reaction is

A

B

C

D

Solution
Question 3
4 / -1

What is the major product in the following reaction ?

A

B

C

D

Solution
Question 4
4 / -1

The major organic product in the following reaction is

A

B

C

D

Solution
Question 5
4 / -1

In the reaction given below,
Q.
The final major product is

A

B

C

D

Solution
Question 6
4 / -1

Which of the following statements are correct in case of the carbonyl bond between carbon and oxygen?

A
Carbon is the nucleophilic centre and Oxygen is the electrophilic centre.

B
Oxygen is the nucleophilic centre and Carbon is the electrophilic centre.

C
Both 'b' and 'd' are correct

D
Carbon and Oxygen double bond is polarised.

Solution

In carbonyl bonds b/w O and C, C is electrophilic centre(centre which needs electron as it is deficient in it) and O is nucleophilic centre(centre which needs +ve charge as it has excess charge). Also, C=O bond is polarised with O having partial negative charge and C having partial positive charge.
Question 7
4 / -1

In the reaction given below,

Q.

which reagent(s) will bring about nucleophilic addition at carbonyl carbon?

A
NH₃

B
HBr

C
CH₃MgBr

D
None of these

Solution

Strong nucleophiles (CH₃MgBr) undergo direct addition.
Question 8
4 / -1

Correct IUPAC name of the following compound is :

A
3-(Hepta-2,4,6-trienyl)-4 bromo cyclopenta-2, 4, -dien-1-ol

B
7-(2-Bromo-4-hydroxy cyclopenta-1,4-dienyl)hepta-1,3,5-triene

C
7-(5-Bromo-3-hydroxycyclopenta-1,4-dienyl)hepta-1,3,5-triene

D
3-Bromo-4-(hepta-2,4,6-trienyl)cyclopenta-2,4-dien-1-oll

Solution

The correct answer is option D
The IUPAC name for the given compound is:
3-Bromo-4-(hepta-2,4,6-trienyl)cyclopenta-2,4-dien-1-oll
according to the rule of nearly attached halogen count first.so we count the the chain where bromo is near
Question 9
4 / -1

A hydrocarbon (R) has six membered ring in which there is no unsaturation. Two alkyl groups are atttached to the ring adjacent to each other. One group has 3 carbon atoms with branching at 1st carbon atom of chain and another has 4 carbon atoms. The larger alkyl group has main chain of three carbon atoms of which second carbon is substituted. Correct IUPAC name of compound (R) is

A
1-(1-Methylethyl)-2-(1-methylpropyl)cyclohexane

B
1-(2-Methylethyl)-2-(1-methylpropyl)cyclohexane

C
1-(1-Methylethyl)-2-(2-methylpropyl)cyclohexane

D
1-(1-Methylethyl)-2-butylcyclohexane

Solution
Question 10
4 / -1

Comprehension Type
Direction (Q. Nos. 10-12) This section contains a paragraph, describing theory, experiments, data, etc.
Three questions related to the paragraph have been given. Each question has only one correct answer among the four given options (a), (b), (c) and (d).
Passage
Consider the following multistep synthesis :

Q.
The hydrocarbon X is

A
C₂H₄

B
C₂H₂

C

D

Solution

Y has 2 carbon extra than unsaturated ketone, hence starting compound must be acetylene and nucleophile undergoing conjugate addition is
Question 11
4 / -1

Consider the following multistep synthesis :

Q.
The structure of compound Y is

A

B

C

D

Solution
Question 12
4 / -1

Consider the following multistep synthesis :

Q.
If X is replaced by pentane -2 ,4 -dione, product equivalent to Y would be

A

B

C

D

Solution
Question 13
4 / -1

Direction (Q. Nos. 13-15) This section contains 3 questions. When worked out will result in an integer from 0 to 9 (both inclusive).

Q.

In the reaction given below, how many different stereoisomers of major product are possible?

A
4

B
5

C
7

D
9

Solution
Question 14
4 / -1

In the reaction given as,

some of the hydrogen undergo exchange by deuterium. At the most, how many deuterium atoj*is incorporation are possible per molecule of keton ?

A
5

B
6

C
7

D
8

Solution
Question 15
4 / -1

Consider the following sequence of reaction,

Q.

How many different stereoisomers of diol are formed ?

A
4

B
7

C
3

D
8

Solution