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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:
(1)
(2)
(3)
(4)
Answer: (2)
Solution:
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.
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:
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
Title: Q-48-Find the Biodegradable Polymer
Description: Q-48- Find 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 |
| (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:
Title: Q-49 - 1-The stable due to Aromaticity
Description: Q-49 - 1-The stable due to Aromaticity
Title: Q-49 - 2-The Anti Aromatic
Description: Q-49 - 2- The Anti Aromatic
Title: Q-49 - 3-The Stable by Resonance
Description: Q-49 - 3- The Stable by Resonance
Acidic nature stability of conjugate anion (Base)