1
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following statement is not true about glucose?

A
Glucose does not give Schiff's reagent test
B
Glucose on reaction with $$\mathrm{HI}$$ and red $$\mathrm{P}$$ at $$373 \mathrm{~K}$$ gives a mixture of cyclohexane and 1-iodohexane
C
Both $$\alpha$$-D-glucose and $$\beta$$-D-glucose undergo mutarotation in aqueous solutions
D
Glucose reacts with hydroxylamine to form an oxime
2
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify the 2 chemical tests which is not answered by Glucose having an open chain structure

[A] Reaction with Schiff's reagent and with Sodium bisulphite

[B] Reaction with $$\mathrm{HCN}$$ and with $$\mathrm{HI}$$

[C] Reaction with $$\mathrm{HNO}_3$$ and with Acetic anhydride

[D] Reaction with aqueous Bromine and with Hydroxylamine

A
[D]
B
[B]
C
[C]
D
[A]
3
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Match the Hormones listed in Column I with their characteristics listed in Column II

No. Hormone No. Characteristics
A Adrenal Cortex P Mediates responses to external stimuli.
B Epinephrine Q Steroid hormone.
C Estrogen R Iodinated derivative of Tyrosine amino acid.
D Throxine S Its malfunction causes Addison's disease.

A
$$ \mathrm{A}=\mathrm{S} \quad \mathrm{B}=\mathrm{P} \quad \mathrm{C}=\mathrm{Q} \quad \mathrm{D}=\mathrm{R} $$
B
$$ \mathrm{A}=\mathrm{R} \quad \mathrm{B}=\mathrm{S} \quad \mathrm{C}=\mathrm{P} \quad \mathrm{D}=\mathrm{Q} $$
C
$$ \mathrm{A}=\mathrm{Q} \quad \mathrm{B}=\mathrm{S} \quad \mathrm{C}=\mathrm{P} \quad \mathrm{D}=\mathrm{R} $$
D
$$ \mathrm{A}=\mathrm{S} \quad \mathrm{B}=\mathrm{R} \quad \mathrm{C}=\mathrm{Q} \quad \mathrm{D}=\mathrm{P} $$
4
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Given below are 4 statements about Insulin. Which of these statement/(s) is/are correct?

[A] Insulin is a globular protein consisting of 51 Amino acids.

[B] Insulin is constituted of 3 polypeptide chains linked together.

[C] Insulin is constituted of 2 polypeptide chains linked together by disulphide bonds.

[D] The 3 polypeptide chains in Insulin are linked together by Hydrogen bonding.

A
[D]
B
[A] & [C]
C
[B] & [D]
D
[B]
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