Halogen Exchange Reactions

Q.

${\mathrm{S}}_{\mathrm{N}}1$ reaction of alkyl halides leads to:

1. retention of configuration

2. racemization

3. inversion of configuration

4. None of these

Q.

Which of the following is halogen exchange reaction?

Q. Which is/are the possible product(s) of the given reaction?

1. 
2. 
3. 
4. 

Q. In the replacement reaction

The reaction will be most favourable if, M happens to be

1. Na
2. Rb
3. K
4. Li

Q. Complexes formed in the following methods are–
(I) Mond's process for purification of nickel
(II) Removal of unreacted AgBr from photographic plate
(III) Removal of lead poisoning from the body
(IV) Cyanide process for extraction of silver
(V) Froth floatation process for separation of ZnS from galena ore by using depressant.

1. 
   $\left(i\right)Ni\left(CO{)}_4\right(ii\left)\right[Ag\left(CN{)}_2{]}^{–}\right(iii\left)\right[Pb\left(EDTA\right){]}^{2-}\left(iv\right)\left[Ag\right(CN{)}_2{]}^{–}\left(v\right)\left[Zn\right(CN{)}_2]$
2. $\left(i\right)Ni\left(CO{)}_4\right(ii\left)\right[Ag\left(S_2{O}_3{)}_2{]}^{3-}\right(iii\left)\right[Pb\left(EDTA\right){]}^{2-}\left(iv\right)\left[Ag\right(CN{)}_2{]}^{–}\left(iv\right)\left[Zn\right(CN{)}_4{]}^2$
3. $\left(i\right)Ni\left(CO{)}_6\right(ii\left)\right[Ag\left(S_2{O}_3{)}_2{]}^{3-}\right(iii\left)\right[Pb\left(EDTA\right){]}^{4-}\left(iv\right)\left[Ag\right(CN{)}_2{]}^{–}\left(v\right)\left[Pb\right(CN{)}_6{]}^{4-}$
4. $\left(i\right)Ni\left(CO{)}_4\right(ii\left)\right[Ag\left(S_2{O}_3\right){]}^{–}\left(iii\right)\left[Pb\right(EDTA\left){]}^{2-}\right(iv\left)\right[Ag\left(CN{)}_4{]}^{3-}\right(v\left)\right[Pb(CN{)}_4{]}^{2-}$

Q.

Is halogenation an addition reaction?

Q. Predict the major product of the following reaction:

1. 
2. 
3. 
4. 

Q. Which is the main product of the given reaction?

1. 
2. 
3. 
4. 

Q. Which of the following statement(s) is/are true about the given elimination reactions?

(1) Hofmann product is major product in I
(2) Saytzeff product is major product in I
(3) Hofmann product is major product in II
(4) Saytzeff product is major product in II

1. 1 and 2
2. 1 and 4
3. 2 and 3
4. 3 and 4

Q. Choose the correct statement regarding $E_{1}cB$ reaction?

1. In the first step, leaving group is abstracted
2. First the proton is abstracted to form the conjugated base
3. It is a one step process
4. The reaction proceeds through the conjugate acid of the starting material

Q. Finkelstein reaction is-

1. $2C{H}_{3}C{H}_{2}Cl+A{g}_{2}O\left(dry\right)\to C{H}_{3}C{H}_{2}OC{H}_{2}C{H}_3+2AgCl$
2. $C{H}_{3}C{H}_{2}Br+NaI\stackrel{Acetone}{\to }C{H}_{3}C{H}_{2}I+NaBr$
3. $C{H}_{3}C{H}_{2}Br+A{g}_{2}O\left(moist\right)\to C{H}_{3}C{H}_{2}OH+AgBr$
4. $C{H}_{3}C{H}_{2}Cl+NaOC{H}_3\to C{H}_{3}C{H}_{2}OC{H}_3+NaCl$

Q. Methyl bromide reacts with AgF to give methyl fluoride and silver bromide. Is this reaction called?

1. Fittig reaction.
2. Swarts reaction.
3. Wurtz reaction.
4. Finkelstein reaction.

Q. Which one is the Swartz reaction from the following?

1. $C{H}_{3}Cl+NaI\stackrel{\text{Dry Acetone}}{⟶}C{H}_{3}I+NaCl$
2. $C{H}_{3}Br+NaI\stackrel{\text{Dry Acetone}}{⟶}C{H}_{3}I+NaBr$
3. $C{H}_{3}Br+AgF⟶C{H}_{3}F+AgBr$
4. $2C{H}_{3}Cl+2Na\stackrel{\text{Dry ether}}{⟶}C{H}_3-C{H}_3+2Na$

Q. Which one is the Swarts reaction from the following?

1. $2C{H}_{3}Cl+2Na\stackrel{Dryether}{⟶}C{H}_3-C{H}_3+2NaCl$
2. $C{H}_{3}Br+NaI\stackrel{Acetone}{⟶}C{H}_{3}I+NaBr$
3. $C{H}_{3}Br+AgF⟶C{H}_{3}F+AgBr$
4. $C{H}_{3}Cl+NaI\stackrel{Acetone}{⟶}C{H}_{3}I+NaCl$

Q. Which of the following is related to extraction of aluminium from bauxite:

1. Baeyer process
2. Hall’s method
3. Froth floatation process
4. Roasting

Q. What is the major product of the reaction?

1. 
2. 
3. 
4. 

Q. In the following reaction sequence , [C] is :

(i) \( NaNO _{2}+ HCl _{2} 0-5 C \) (ii) \( Cu _{2} Cl _{2}+ HCl \) [A \( ] \) [B] \( Na + \) thy ether [C] (Major Protuct)

Q. Structure of (B) is :

1. 
2. 
3. 
4. 

Q. The preparation of alkyl fluoride from alkyl chloride, in presence of metallic fluorides is known as :

1. Swarts reaction
2. Williamson's synthesis
3. Wurtz reaction
4. Finkelstein reaction

Q. Which of the following statements are correct about the following reactions?

1. Reaction $1$ proceeds by $S_{N}2$ and reaction $2$ by $S_{N}1$ mechanism
2. Reaction $1$ proceeds by $S_{N}1$ and reaction $2$ by $S_{N}2$ mechanism
3. (B)$\Rightarrow$(-) $Ph-\stackrel{OH}{\stackrel{|}{C}H}-CH=CH-Me$
   
   
   (C)$\Rightarrow$ $(\pm )$ $Ph-CH=CH-\underset{OH}{\underset{|}{C}H}-Me$
   The products $\left(B\right)$ and $\left(C\right)$ are respectively
4. (B)$\Rightarrow$(-) $Ph-\stackrel{OH}{\stackrel{|}{C}H}-CH=CH-Me$
   
   
   
   (C)$\Rightarrow$ $(\pm )$ $Ph-\underset{OH}{\underset{|}{C}H}-CH=CH-Me$
   
   
   The products $\left(B\right)$ and $\left(C\right)$ are, respectively

Q. Assertion :Gabriel phthalimide reaction is used for the preparation of $C_2{H}_5{NH}_2$ and p-nitro aniline Reason: $S_{N}2$ reaction takes place with $1^{o}RX$ and $1^{o}ArX$ containing electron withdrawing group at $o-$ and $p-$positions

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Predict the product in the given reaction.

1. Hexan-1-ol
2. Hexan-2-ol
3. 2-Methylhexan-2-ol
4. Hexan-2-one

Q. Which of the following reaction does not yield an alkyl halide?

1. $C{H}_{3}C{H}_{2}OC{H}_{2}C{H}_3\underset{hv}{\overset{{Cl}_2}{\to }}$
2. $C{H}_{3}C{H}_{2}OC{H}_{2}C{H}_3\underset{heat}{\overset{conc.Hl}{\to }}$
3. $C{H}_{3}C{H}_{2}OC{H}_{2}CH3\underset{heat}{\overset{PC{l}_5}{\to }}$
4. $C{H}_{3}C{H}_{2}OH$$\stackrel{{SOCI}_2}{\to }$

Q. The major product (A) formed in the reaction given below is :

\( + CH _{3} OHOH _{3} \) A Qhior product)

Q. Which of the following reaction is an example of ammonolysis ?

1. $C_6{H}_{5}N{H}_2\stackrel{HCl}{\to }{C}_6{H}_{5}N{H}_3^{+}C{l}^{-}$
2. $C_6{H}_{5}C{H}_{2}CN\stackrel{\left[H\right]}{\to }{C}_6{H}_{5}C{H}_{2}C{H}_{2}N{H}_2$
3. $C_6{H}_{5}COCl+C_6{H}_{5}N{H}_2\to C_6{H}_{5}CONH{C}_6{H}_5$
4. $C_6{H}_{5}C{H}_{2}Cl+N{H}_3\to C_6{H}_{5}C{H}_{2}N{H}_2$

Q. In which reactions product, formation takes place according to Hofmann's rule?
I.

II.

1. Only I
2. Both I and II
3. Only II
4. None of the above

Q. In the replacement reaction:
The reaction will be most favourable if M happens to be:

1. Li
2. K
3. Rb
4. Na

Q. how to find reaction order in coupling reactions??

Q. The correct statement about the given reaction is:

1. $M{e}_{3}C-OMe$ with anhydrous $HI$ gives this reaction
2. $M{e}_{3}C-OMe$ with concentrated $HI$ gives this reaction
3. Both A and B
4. None of the above

Q. The intermediate compound formed when acetylene is hydrated in presence of dil. $H_{2}S{O}_4$ and $HgS{O}_4$ is:

1. vinyl chloride
2. ethanol
3. acetaldehyde
4. ethenal