Friedel Crafts Alkylation, Acylation

Q.

Assertion (A) – Calcium Carbonate when heated gives Calcium oxide and Water.

Reason (R) – On heating ${\mathrm{CaCO}}_3$, a decomposition reaction takes place.

1. Both A and R are true, and R is the correct explanation for A.

2. Both A and R are true, and R is not the correct explanation for A.

3. A is true but R is false.

4. A is false but R is true.

Q.

Explain Haworths synthesis of naphthalene

Q.

Write equations of the following reactions
Friedel Crafts reaction - alkylation of anisole.

Nitration of anisole.

Bromination of anisole in ethanoic acid medium.

Friedel Crafts acetylation of anisole.

Q. Which of the following compounds will not undergo Friedel Craft's reaction with benzene?

1. 
2. 
3. 
4. 

Q. In the given reaction

the product P is

1. 
2. 
3. 
4. 

Q.

What happens when H₃PO₃ is heated?

Q.

Complete each synthesis by giving missing starting material, reagent or products.

Q. Consider the following reactions, which are carried out at the same temperature.
$C{H}_3-Br+O{H}^{\oplus }\stackrel{EtOH}{\to }C{H}_3-OH+B{r}^{\ominus }\cdots \left(i\right)C{H}_3-Br+O{H}^{\oplus }\stackrel{DMSO}{\to }C{H}_3-OH+B{r}^{\ominus }\cdots \left(ii\right)$
Which of the following statement is correct about these reactions?

1. Both the reactions take place at the same rate
2. The second reaction takes place faster than first reaction
3. The first reaction takes place faster than second reaction
4. Both the reactions take place by $S_{N}1$ mechanism

Q. 11.18% (w/V) solution of urea (Mol. mass-60) is(1) 1 M(3) 0.3 M(2) 2 M(4) 3 M

Q.

Balance the following redox reactions by ion-electron method:

(a) (aq) + I^– (aq) → MnO₂ (s) + I₂(s) (in basic medium)

(b) (aq) + SO₂ (g) → Mn²⁺ (aq) + (aq) (in acidic solution)

(c) H₂O₂ (aq) + Fe²⁺ (aq) → Fe³⁺ (aq) + H₂O (l) (in acidic solution)

(d) + SO₂(g) → Cr³⁺ (aq) + (aq) (in acidic solution)

Q.

Write equations of the following reactions:

(i) Friedel-Crafts reaction−alkylation of anisole.

(ii) Nitration of anisole.

(iii) Bromination of anisole in ethanoic acid medium.

(iv) Friedel-Craft’s acetylation of anisole.

Q.
Select the correct statement(s) about the major product.

1. There is one hydride shift for the formation of major product
2. There are two 1, 2- shifting for the formation of major product
3. There is one methyl shift for the formation of major product
4. The major product doesn't contain any double bond

Q. Consider following reaction sequence.


(D) has x number of double bond equivalents, the number of double bonds in (D) is y, the number of all stereoisomers of (D) is z. What is the value of x + y + z?

Q. The name of reaction of an alkyl halide with an arene in the presence of anhydrous $AlC{l}_3$ is

1. Grignard reaction
2. Friedel-Crafts reaction
3. Wurtz-fittig reaction
4. Wurtz reaction

Q. Crossed Cannizzaro reaction can be given by following combination

1. $C{H}_{3}CHO,HCHO$
2. $C_6{H}_{5}CHO,C{H}_{3}CHO$
3. $C_6{H}_{5}CHO,HCHO$
4. All of these

Q. Consider the following statements about the above reaction:

(I) The major product formed in the above reaction is:

(II) This reaction is an example of Fridel-Crafts alkylation.
(III) The carbocation formed $(C{H}_3{)}_3{C}^{+}$ is less stable than $(C{H}_3{)}_{3}C-\stackrel{+}{C}O$.
(IV) The major product formed in this reaction is:


The correct statement(s) is/are:

1. (I) , (II) and (III)
2. (I) only
3. (II) and (IV)
4. (II), (III) and (IV)

Q.

Mass number of Ne₂

Q.

What Is The Perkin Reaction In Carbonyl Compounds?

Q.

The Mn³⁺ ion is unstable in solution and undergoes disproportionation to give Mn²⁺, MnO₂, and H⁺ ion. Write a balanced ionic equation for the reaction.

Q. Which of the following options has the correct final product for the following reaction?

1. 
2. 
3. 
4. 

Q.

Molecular mass of H₂SO₄

Q. The reaction of compound P with $C{H}_{3}MgBr$(excess) in $(C_2{H}_5{)}_{2}O$ followed by addition of $H_{2}O$ gives Q. The compound Q on treatment with $H_{2}S{O}_4$ at $0^{\circ }C$ gives R. The reaction of R with $C{H}_{3}COCl$ in the presence of anhydrous $AlC{l}_3$ in $C{H}_{2}C{l}_2$ followed by treatment with $H_{2}O$ produces compound S [Et in compound P is ethyl group]


The product S is:

1. 
2. 
3. 
4. 

Q. Benzene reacts with 1 equivalent of $C{H}_{3}Cl$ in the presence of anhydrous $AlC{l}_3$ to form

1. Toluene
2. Chlorobenzene
3. Benzylchloride
4. Xylene

Q. The reaction of compound P with $C{H}_{3}MgBr$(excess) in $(C_2{H}_5{)}_{2}O$ followed by addition of $H_{2}O$ gives Q. The compound Q on treatment with $H_{2}S{O}_4$ at $0^{\circ }C$ gives R. The reaction of R with $C{H}_{3}COCl$ in the presence of anhydrous $AlC{l}_3$ in $C{H}_{2}C{l}_2$ followed by treatment with $H_{2}O$ produces compound S [Et in compound P is ethyl group]


The product S is:

1. 
2. 
3. 
4. 

Q.
Major product 'P' is:

1. 
2. 
3. 
4. 

Q.

Write equations of the following reactions:

(i) Friedel-Crafts reaction−alkylation of anisole.

(ii) Nitration of anisole.

(iii) Bromination of anisole in ethanoic acid medium.

(iv) Friedel-Craft’s acetylation of anisole.

Q. What is the action of the silver acetate on ethyl bromide?

Q. Benzene reacts with 1 equivalent of $C{H}_{3}Cl$ in the presence of anhydrous $AlC{l}_3$ to form

1. Toluene
2. Chlorobenzene
3. Benzylchloride
4. Xylene

Q. What is the role of $AlC{l}_3$ in Friedel crafts acylation reaction?

1. Stabilization of intermediate
2. None of these
3. Primary attack on reactant to form intermediate
4. Removal of water

Q. The reagent used in Ullmann reaction is

1. $R_{2}CuLi$
2. $Zn/Dryether$
3. $Na/Dryether$
4. $Cu/DMF,\Delta$