1
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

In Friedal-Crafts alkylation reaction of phenol with chloromethane, the product formed will be

A
$$p$$-cresol only
B
$$m$$-cresol only
C
mixture of $$o$$-and $$p$$-cresol
D
$$o$$-cresol only
2
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which among the following is diamagnetic?

A
$$\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$$
B
$$\left[\mathrm{Co}\left(\mathrm{F}_6\right)\right]^{3-}$$
C
$$\left[\mathrm{NiCl}_4\right]^{2-}$$
D
$$\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$$
3
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following is an important component of chlorophyll?

A
Mn
B
Mg
C
Fe
D
Zn
4
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

A volatile compound is formed by carbon monoxide and

A
Cu
B
Al
C
Ni
D
Si
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