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

Choose the incorrect statement from the following.

A
Carbon tetrachloride is used as a preservative for anatomical specimens
B
Freon-12 acts as a propellant in aerosol sprays
C
Dichloromethane is used as a solvent in drug industry
D
DDT is useful to protect crops and to kill mosquitoes that spread malaria
2
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

Consider the following reaction

$$(\mathrm{CH}_3)_2 \mathrm{CHCH}_2 \mathrm{Br}+(\mathrm{CH}_3)_3 \mathrm{CCH}_2 \mathrm{Br} \xrightarrow[\Delta]{\mathrm{Na} \text { /dry ether }} \mathrm{X}+\mathrm{Y}+\mathrm{Z}$$

Identify the product which is not formed?

A
2, 2, 5-trimethylhexane
B
2, 2, 4, 4-tetramethylhexane
C
2, 2, 5, 5-tetramethylhexane
D
2, 5-dimethylhexane
3
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

The major product obtained in the following reaction is :

COMEDK 2024 Afternoon Shift Chemistry - Haloalkanes and Haloarenes Question 16 English

A
COMEDK 2024 Afternoon Shift Chemistry - Haloalkanes and Haloarenes Question 16 English Option 1
B
COMEDK 2024 Afternoon Shift Chemistry - Haloalkanes and Haloarenes Question 16 English Option 2
C
COMEDK 2024 Afternoon Shift Chemistry - Haloalkanes and Haloarenes Question 16 English Option 3
D
COMEDK 2024 Afternoon Shift Chemistry - Haloalkanes and Haloarenes Question 16 English Option 4
4
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following compounds when reacted with $$\mathrm{NaOH}$$ (aq) undergoes Substitution Nucleophilic Bimolecular reaction with retention of configuration?

A
COMEDK 2024 Morning Shift Chemistry - Haloalkanes and Haloarenes Question 21 English Option 1
B
COMEDK 2024 Morning Shift Chemistry - Haloalkanes and Haloarenes Question 21 English Option 2
C
COMEDK 2024 Morning Shift Chemistry - Haloalkanes and Haloarenes Question 21 English Option 3
D
COMEDK 2024 Morning Shift Chemistry - Haloalkanes and Haloarenes Question 21 English Option 4
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