$[$

Chemical Engineering

$]$

$[$

Multiple choice answer on the picture

$]$

$2$

$.$

$$Select the best reagent

$($

s

$)$

$$to accomplish transformation shown.

A

$)$

$$PCC

$,$

$$CH

$2$

Cl

$2$

B

$)$

$$K

$2$

Cr

$2$

O

$7$

$,$

$$H

$2$

SO

$4$

$,$

$$heat

C

$)$

$$LiAlH

$4$

$$then H

$2$

O

D

$)$

$$NBS then CH

$3$

ONa

$3$

$.$

$$Which of the following structure is the most stable resonance for the reaction of p

$-$

fluoronitrobenzene with sodium methoxide

A

$)$

$$B

$)$

$$C

$)$

$$D

$)$

$4$

$.$

$$Which compumd will reacy faster with NaOCH

$3$

$$in methanol

$($

$5$

$0$

$\backslash$

deg C

$)$

A

$)$

$$B

$)$

$$C

$)$

$$D

$)$

$5$

$.$

$$ Which compound will react fastee with Br

$2$

$$in acetic acid

A

$)$

$$B

$)$

$$C

$)$

$$D

$)$

$6$

$.$

$$Which of the following is an aromatic hydrocarbons?

A

$)$

$$B

$)$

$$C

$)$

$$D

$)$

$7$

$.$

$$Predict tge major organic product in the following reaction

A

$)$

$$B

$)$

$$C

$)$

$$D

$)$

$8$

$.$

$$Propylbenzene is subjected to the sequence of reactions below. What is the final product?

A

$)$

$$B

$)$

$$C

$)$

$$D$)$