1
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Match the structures in Column I with their correct IUPAC names given in Column II.

Column I Column II
A. COMEDK 2025 Morning Shift Chemistry - IUPAC Nomenclatures Question 1 English 1 P. 2,3-Dibromo-1-phenylpentane.
B. COMEDK 2025 Morning Shift Chemistry - IUPAC Nomenclatures Question 1 English 2 Q. 2,3- Dibromohexanedial.
C. COMEDK 2025 Morning Shift Chemistry - IUPAC Nomenclatures Question 1 English 3 R. 2- ( 4- isobutylphenyl) propanoic acid
D. COMEDK 2025 Morning Shift Chemistry - IUPAC Nomenclatures Question 1 English 4 S. 2- Hydroxy-1,2,3- propanetricarboxylic acid.

A
$\mathrm{A}=\mathrm{Q} \quad \mathrm{B}=\mathrm{P} \quad \mathrm{C}=\mathrm{S} \quad \mathrm{D}=\mathrm{R}$
B
$\mathrm{A}=\mathrm{R} \quad \mathrm{B}=\mathrm{S} \quad \mathrm{C}=\mathrm{Q} \quad \mathrm{D}=\mathrm{P}$
C
$\mathrm{A}=\mathrm{S} \quad \mathrm{B}=\mathrm{R} \quad \mathrm{C}=\mathrm{Q} \quad \mathrm{D}=\mathrm{P}$
D
$\mathrm{A}=\mathrm{S} \quad \mathrm{B}=\mathrm{R} \quad \mathrm{C}=\mathrm{P} \quad \mathrm{D}=\mathrm{Q}$
2
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify $[\mathrm{X}]$, the final product formed when 2 moles of Ethanal undergoes the following series of reactions with reagents [(i) to (iv)]

COMEDK 2025 Morning Shift Chemistry - Aldehyde and Ketone Question 1 English

A
But-3-enoic acid
B
But-2-enoic acid
C
Propanoic acid
D
Ethanoic acid
3
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two statements, one Assertion (A) and the other Reason (R) are given. Choose the correct option.

Assertion: Maltose, a disaccharide, is a reducing sugar and is obtained by the partial hydrolysis of starch in presence of the enzyme diastase.

Reason: Hydrolysis of one mole of Maltose gives one mole each of $\alpha-D-$ Glucose and $\beta-D-$ Fructose.

A
A is wrong but R is correct.
B
Both A and R are correct but R is not the correct explanation of A .
C
A is correct but R is wrong.
D
Both A and R are correct and R is the correct explanation of A .
4
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following options represents the decreasing order of oxidation number of the central atom in:

$$\mathrm{Cr}_2 \mathrm{O}_7^{2-}, \mathrm{Cr} \mathrm{O}_2^{-}, \mathrm{MnO}_4^{-}, \mathrm{BrO}_3^{-}$$

A
$\mathrm{CrO}_2^{-}>\mathrm{BrO}_3^{-}>\mathrm{Cr}_2 \mathrm{O}_7^{2-}>\mathrm{MnO}_4^{-}$
B
$\mathrm{MnO}_4^{-}>\mathrm{CrO}_2^{-}>\mathrm{Cr}_2 \mathrm{O}_7^{2-}>\mathrm{BrO}_3^{-}$
C
$\mathrm{BrO}_3^{-}>\mathrm{CrO}_2^{-}>\mathrm{MnO}_4^{-}>\mathrm{Cr}_2 \mathrm{O}_7^{2-}$
D
$\mathrm{MnO}_4^{-}>\mathrm{Cr}_2 \mathrm{O}_7^{2-}>\mathrm{BrO}_3^{-}>\mathrm{CrO}_2^{-}$
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