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AIIMS MBBS 2018 Higher Questions and Answers with Solutions Part 5

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Q: 43. Trien is

(1) Hexa dentate, Mono anionic

(2) Tetradentate, neutral

(3) Tetradentate, dianion

(4) Mono dentate, anion

Ans. (2)

Q: 44.

Title

Description:

Electrophone

(1)

Electrophone Option-A

(2)

Electrophone Option-B

(3)

Electrophone Option-C

(4)

Electrophone Option-D

Answer: (2)

Solution:

Electrophone Occurs

group is more activating so attack of (electrophone) occurs at ortho position of group during ESR

Q: 45. Which is incorrect statement (Exact) ?

(1) Amylopectin is insoluble in water

(2) Fructose is reducing sugar

(3) Cellulose is the polymer B-D-glucose

(4) D-ribose sugar present in DNA

Ans. (4)

Solution:

D-ox ribose sugar present in DNA is correct sugar

Q: 46. What is final product

(1)

(2)

(3)

(4)

Ans. (2)

Solution:

Reduces imine into Amine but does not reduces double bond

Q: 47.

The Sequence of Reagent

Title: Q-47-Find the sequence of reagent uses to convert

Description: Q-47-Find the sequence of reagent uses to convert

What is sequence of reagent use to convert following

(1) , ,

(2)

(3)

(4)

Ans. (2)

Solution:

The Sequence of Reagent

Title: Q-47 - 1-Find the sequence of reagent uses to convert

Description: Q-47 - 1-Find the sequence of reagent uses to convert

Q: 48. Match the following

The Biodegradable Polymer

Title: Q-48-Find the Biodegradable Polymer

Description: Q-48- Find the Biodegradable Polymer

The Biodegradable Polymer
(I)Biodegradable Polymer(P)3-Hydroxybutanoic acid
(II)Bakelite(Q)Phenol
(III)Neoprene(R)2-chlorobuta-1,3-diene
(IV)Glyptal(S)Phthalic acid
The Biodegradable Polymer
(1)I. P; II. Q; III. R; IV. S
(2)I. Q; II. P; III. R; IV. S
(3)I. P; II. Q; III. R; IV. R
(4)I. S; II. R; III. P; IV. Q

Ans. (1)

Solution:

(I)

(II)

(III)

(IV)

Q: 49. Order of increasing acidic strength

(1)

(2)

(3)

(4)

Ans. (3)

Solution:

The Stable Due to Aromaticity

Title: Q-49 - 1-The stable due to Aromaticity

Description: Q-49 - 1-The stable due to Aromaticity

The Anti Aromatic

Title: Q-49 - 2-The Anti Aromatic

Description: Q-49 - 2- The Anti Aromatic

The Stable by Resonance

Title: Q-49 - 3-The Stable by Resonance

Description: Q-49 - 3- The Stable by Resonance

Acidic nature stability of conjugate anion (Base)