Chemical Properties of Aromatic Compounds

Q. The oxidation of benzene by $V_2{O}_5$ in the presence of air produces:

1. benzoic acid
2. benzaldehyde
3. benzoic anhydride
4. maleic anhydride

Q. 9. For reaction, PCl3(g)+Cl2(g) gives PCl5(g), the value of Kc at 250 degree celcious is 26.The value of Kp at this temperature will be.(what will be the R value?why?)

Q. Treatment of benzene with $CO/HCl$ in the presence of anhydrous $AlC{l}_3/CuCl$ followed by reaction with $A{c}_{2}O/NaOAc$ gives compound X as the major product. Compound X upon reaction with $B{r}_2/N{a}_{2}C{O}_3$, followed by heating at 473 K with moist $KOH$ furnishes Y as the major product. Reaction of X with $H_2/Pd-C,$followed by $H_{3}P{O}_4$ treatment gives Z as the major product.
The compound Y is:

1. 
2. 
3. 
4. 

Q. 45. (Ch3)3CMgcl on reaction with D2O produces. Also tell how this happens and why this product is dominat over other

Q.

Benzene reacts with $C{H}_{3}COCl$ in the presence of $AlC{l}_3$ to give

1. C₆H₅Cl

2. C6H5COCl

3. C₆H₅CH₃

4. C₆H₅COCH₃

Q. 24. What will be the product when prop-1-ene reacts with NOCl. .Give detail mechanism.

Q. Which of the following is not an example of adsorption chromatography?

1. Thin layer chromatography
2. Paper chromatography
3. All of the above
4. Column chromatography

Q. Which of the compound undergoes electrophilic substition most easily?

1. 
2. 
3. 
4. 

Q.

Fill in the blanks.

In the dark, chlorine adsorbed on hydrogen more ______ than chlorine hydrogen. (readily/reductantly)

Q. Zc sulphide exists in two different structural forms as zincblende (FCC) and Wurtzite (HCP). What will be the coordinationnumber of cation and anion in both the structures?

Q. 31. How to find a reaction whether it is a nucleophilic or electrophilic reaction ?

Q. Reaction of but 1 yne and but 2 yne with kmno4

Q.

Who introduced chromatography?

Q. Complete the reaction

1. $A\to$ Nitrobenzene $B\to$ p-bromonitrobenzene
2. $A\to$ Benzene sulphonic acid $B\to$ Benzenesulphonic acid
3. $A\to$ Nitrobenzene $B\to$ m-bromonitrobenzene
4. $A\to$ Nitrobenzene $B\to$Trinitrobenzene

Q. 35. Pure N2 is not produced when:- 1)Red hot CuO and NH3 react 2)Ba(N3)2 is heated 3)NaN3 is heated 4) None of these

Q. $E1cB$ reaction is given by those compounds which have poor leaving group, otherwise carbanion will not be formed.

1. True
2. False

Q. The major product U in the following reactions is

1. 
2. 
3. 
4. 

Q. Treatment of benzene with $CO/HCl$ in the presence of anhydrous $AlC{l}_3/CuCl$ followed by reaction with $A{c}_{2}O/NaOAc$ gives compound X as the major product. Compound X upon reaction with $B{r}_2/N{a}_{2}C{O}_3$, followed by heating at 473 K with moist $KOH$ furnishes Y as the major product. Reaction of X with $H_2/Pd-C,$followed by $H_{3}P{O}_4$ treatment gives Z as the major product.
The compound Y is:

1. 
2. 
3. 
4. 

Q. Three Industrial application of Alkanes

Q. why do Cu get oxidised from Cu--->Cu²⁺ and not Cu--->Cu⁺,
when Cu and Fe³⁺ are taken as electrodes .

Q.

Why does benzene undergo electrophilic substitution reactions easily and nucleophilic substitutions with difficulty?

Q. The important conclusions on the formation of trihalomethanes are which of the following?

1. Chlorination of natural waters causes the formation of chloroform and other trihalomethanes because of the reaction of $OC{l}^{-}$ on DOC present in the water
2. Use of both ammonia and chlorine in water treatment has reduced the level of the trihalomethanes due to the formation of the chloroamines, which react more slowly than free chlorine
3. Finally, the concentration of the trihalomethanes above 100$\mu$ g/l are considered unsafe for drinking water
4. All of the above