Preparation of Aryl Halides

Q.

Silver benzoate reacts with bromine in CCl₄ refluxing to form

1. 
   

2. 
   

3. C₆H₅Br

4. 
   

Q. Silver benzoate will react with bromine in acetone to form

1. 
2. 
3. 
4. 

Q. The main product obtained in the reaction of 2-butene with N-bromosuccinimide in presene of light is

1. $C{H}_{2}BrCHBrC{H}_{2}C{H}_3$
2. $C{H}_{3}CHBrC{H}_{2}C{H}_3$
3. $C{H}_{3}CH=CBrC{H}_3$
4. $C{H}_{3}CH=CHC{H}_{2}Br$

Q. Columns 1, 2 and 3 contain starting materials, reaction conditions, and type of reactions, respectively:
$\begin{array}{ccc}\text{Column 1}& \text{Column 2}& \text{Column 3}\\ \text{(I) Toluene}& \left(i\right)NaOH/B{r}_2& \text{(P) Condensation}\\ \text{(II) Acetophenone}& \left(ii\right)B{r}_2/hv& \text{(Q) Carboxylation}\\ \text{(III) Benzaldehyde}& \left(iii\right)(C{H}_{3}CO{)}_{2}O/C{H}_{3}COOK& \text{(R) Substitution}\\ \text{(IV) Phenol}& \left(iv\right)NaOH/C{O}_2& \text{(S) Haloform}\end{array}$
The only CORRECT combination in which the reaction proceeds through radical mechanism is:

1. (II) (iii) (R)
2. (III) (ii) (P)
3. (IV) (i) (Q)
4. (I) (ii) (R)

Q. 16. (CH3)3ONa +CH3CH2Cl >>>(CH3)3OCH2CH3 (1) GattermanKoch reaction (2) Williams synthesis (3) Williams continuous etherifiction process (4)Etard reaction.

Q. The reaction of toluene with $C{l}_2$ in presence of $FeC{l}_3$ gives X and reaction in presence of light gives Y. Thus, X and Y are

1. X = benzyl chloride, Y = m-chlorotoluene
2. X = benzal chloride, Y = o-chlorotoluene
3. X = m-chlorotoluene, Y = p-chlorotoluene
4. X = o-and p-trichloromethyl benzene

Q.

Chlorobenzene is prepared commercially by

[JIPMER 2000; CPMT 1976; Pb. CET 2002 ]

1. Raschig process

2. Wurtz Fitting reaction

3. Friedel-Craft's reaction

4. Grignard reaction

Q. Which one of the following reagent is used for the preparation of allylic halide?

1. NBS
2. Sulphonyl chloride
3. Phosphorous pentachloride
4. Phosphorous trichloride

Q. Silver benzene will react with bromine in acetone to form

1. 
2. 
3. 
4. 

Q. Photochemical reaction of trans-2-butene with itself will produce which of the following products?

1. B and D
2. A and B
3. C and D
4. A and C

Q. Columns 1, 2 and 3 contain starting materials, reaction conditions, and type of reactions, respectively:
$\begin{array}{ccc}\text{Column 1}& \text{Column 2}& \text{Column 3}\\ \text{(I) Toluene}& \left(i\right)NaOH/B{r}_2& \text{(P) Condensation}\\ \text{(II) Acetophenone}& \left(ii\right)B{r}_2/hv& \text{(Q) Carboxylation}\\ \text{(III) Benzaldehyde}& \left(iii\right)(C{H}_{3}CO{)}_{2}O/C{H}_{3}COOK& \text{(R) Substitution}\\ \text{(IV) Phenol}& \left(iv\right)NaOH/C{O}_2& \text{(S) Haloform}\end{array}$
The only CORRECT combination in which the reaction proceeds through radical mechanism is:

1. (I) (ii) (R)
2. (II) (iii) (R)
3. (III) (ii) (P)
4. (IV) (i) (Q)

Q.

Silver benzoate reacts with bromine in CCl₄ refluxing to form

1. 

2. 

3. 

4. C₆H₅Br

Q. In the presence of sunlight, benzene reacts with $C{l}_2$ to give product $X$. The number of hydrogens in $X$ is .

Q. Urea is prepared by the chemical reaction of:

1. ammonium sulphate and calcium chloride
2. acetamide and ethyl alcochol
3. ammonia and Carbon dioxide
4. chlorine and water

Q. In the above reactions, the reaction from $Z\to K$ is:

1. Curtius reaction
2. Sabatier-Senderens reaction
3. Kolbe's electrolysis reaction
4. Wurtz reaction

Q.

Chlorobenzene is prepared commercially by

[JIPMER 2000; CPMT 1976; Pb. CET 2002 ]

1. Raschig process

2. Wurtz Fitting reaction

3. Friedel-Craft's reaction

4. Grignard reaction

Q. can we prepare C_2H6, (CH₃)₂CHCH₃​, CH₃​CH₂CH₂CH₃ by wurtz reaction ?

Q. How would you bring the following conversions?
Formaldehyde to n-butane

Q.

1. Name the gas in each of the following
2. State one observation for each of the following

1. Excess ammonium hydroxide is added to lead nitrate solution
2. Bromine vapours are passed into a solution of ethyne in carbon tetrachloride
3. A zinc granule is added to copper sulphate solution
4. Zinc nitrate crystals are strongly heated
5. Sodium hydroxide solution is added to ferric chloride solution at first a little and then in excess

Q. The starting point for manufacture of the anesthetic chloroform is:

1. acetone
2. formic acid
3. chlorine
4. carbon tetrachloride

Q.

CO is not produced during Habers process so why is it neccessary to remove CO when ammonia is obtained by Habers process ?

Q.

Chlorobenzene is prepared commercially by

[JIPMER 2000; CPMT 1976; Pb. CET 2002 ]

1. Raschig process

2. Friedel-Craft's reaction

3. Wurtz Fitting reaction

4. Grignard reaction