1
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

If the molar masses of two chemically non-reacting gases $\mathrm{A}_2$ and $\mathrm{B}_2$ are 28 amu and 32 amu respectively and 0.8 g of $\mathrm{A}_2$ and 0.4 g of $B_2$ are enclosed in a container with a total pressure of 820 mm of Hg , then the partial pressure of $A_2$ in atmosphere unit is $\_\_\_\_$

A

0.75

B

0.43

C

4.34

D

7.51

2
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

The basic character of transition metal monoxides follows the order:

A

$\mathrm{VO}>\mathrm{CrO}>\mathrm{TiO}>\mathrm{FeO}$

B

$\mathrm{FeO}>\mathrm{CrO}>\mathrm{VO}>\mathrm{TiO}$

C

$\mathrm{TiO}>\mathrm{VO}>\mathrm{CrO}>\mathrm{FeO}$

D

$\mathrm{CrO}>\mathrm{TiO}>\mathrm{FeO}>\mathrm{VO}$

3
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Propanal on reaction with dilute NaOH , undergoes aldol condensation resulting in the formation of a compound A . identify the correct structure of A and name of the compound.

A

COMEDK 2026 Morning Shift Chemistry - Aldehyde and Ketone Question 7 English Option 1

B

COMEDK 2026 Morning Shift Chemistry - Aldehyde and Ketone Question 7 English Option 2

C

COMEDK 2026 Morning Shift Chemistry - Aldehyde and Ketone Question 7 English Option 3

D

COMEDK 2026 Morning Shift Chemistry - Aldehyde and Ketone Question 7 English Option 4

4
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Select the reagents needed to convert Benzene to 4-Bromophenylpropene in the correct sequential order.

(A). $\mathrm{Cl}_2 / \Delta$

(B). $\left(\mathrm{CH}_3\right)_2-\mathrm{CHCl}$ /anhyd. $\mathrm{AlCl}_3$

(C). Alc. KOH

(D). $\mathrm{Br}_2 / \mathrm{Fe}$

A

D, A, C, B

B

D, C, A, B

C

A, C, B, D

D

B, D, A, C