Schiemann Reaction

Q. What will happen if two different alkyl halides are taken in wurtz reaction?

Q. Stephen reduction is used to prepare aldehyde from:

1. Alcohol
2. Alkyl cyanide
3. Alkanone
4. Acid chloride

Q. Reaction of benzoyl chloride with $H_2/Pd-BaS{O}_4$ is known as:

1. Etard reaction
2. Swarts reaction
3. Rosenmund reduction
4. Clemmensen reduction

Q. In the chemical reaction.

the compounds ‘A’ and ‘B’ respectively are

1. Nitrobenzene and chlorobenzene
2. Nitrobenzene and flurobenzene
3. Phenol and benzene
4. Benzene diazonium chloride and fluorobenzene

Q. Fluorobenzene can be synthesized in the laboratory by ____.

1. heating phenol with HF and KF
2. diazotization of aniline followed by heating with HBF₄
   
3. direct fluorination of benzene using fluorine gas
4. reacting bromobenzene with NaF solution

Q. Azobenzene can be obtained by the reduction of nitrobenzene by using Options: Zn + aq · NH4CI Na3AsO3/NaOH LiAIH4 in ether Sn + HCI

Q.

Why is diazotization done at low temperature?

Q. Finkelstein reaction is used to prepare
[0.77 Mark]

1. $R-Cl$
2. $R-Br$
3. $R-I$
4. $R-F$

Q. . The amine that reacts with Hinsbergs reagent to give an alkali insoluble product?

Q. The reaction, $RCl+NaI\stackrel{\text{Dry acetone}}{\to }R-I+NaCl\downarrow$ is known as:

1. Wurtz reaction
2. Swartz reaction
3. Finkelstein's reaction
4. None of the above

Q. Which of the following halogen exchange reaction will occur in dry acetone?

1. $R-I+NaCl\to$
2. $R-Cl+NaBr\to$
3. $R-Cl+NaI\to$
4. $R-F+AgBr\to$

Q. Which of the following is a Sandmeyer reaction?

1. 
2. 
3. 
4. 

Q.

In the chemical reaction given below, which of the following cannot be the correct sequence of the physical states of the reactants and products, respectively?

${\mathrm{AgNO}}_3+\mathrm{KCl}\to \mathrm{AgCl}+{\mathrm{KNO}}_3$

1. aq , aq, aq, aq

2. aq , aq, s, aq

3. s, aq, s, aq

4. aq , s, s, aq

Q. What is 'A' and 'B' respectively in the following reaction?

1. $A=C{u}_{2}C{l}_2,B=N_2$
2. $A=C{u}_2{I}_2,B=I_2$
3. $A=I_2,B=N_2$
4. $A=KI,B=N_2$

Q.

The foul smelling substance produced when a primary amine is heated with CHCl₃ and few drops of alcoholic KOH is:

1. Alkane

2. Isocyanide

3. Nitroalkane

4. Nitrosamine

Q. The best reagent to prepare alkyl chlorides from alcohols is:
[0.77 Mark]

1. $SOC{l}_2$
2. $PC{l}_3$
3. $PC{l}_5$
4. $HCl$

Q. Acidic potassium permanganate is used in organic chemistry under the name Baeyer's reagent.

1. True
2. False

Q. Diels-Alder reaction is used to synthesis a ring of:

1. Four carbon atoms
2. Five carbon atoms
3. Three carbon atoms
4. Six carbon atoms

Q.
Product(s) of which pair gives yellow precipitate with $NaOH+I_2$?

1. (A, B)
2. (B, C)
3. (A, C)
4. None of these

Q. Which of the following is formed as a major compound when ethyl chloride reacts with silver nitrite?

1. Nitroethane
2. Ethyl nitrite
3. Ethylene
4. Acetaldehyde

Q. $BaC{l}_2$ solution gives a white ppt. with a solution of an acid radical which dissolves in dil. $HCl$ with the evolution of a colourless, pungent smelling gas. The acid radical may be:

1. $S^{2-}$
2. $S{O}_3^{2-}$
3. $S{O}_4^{2-}$
4. $C{O}_3^{2-}$

Q. Assertion :1- butyne forms white precipitate with ammoniacal silver nitrate solution while 2- butyne does not Reason: 1- butyne has a acidic hydrogen

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. Match the reactions with their name:

1. Schiemann reaction
2. Swarts reaction
3. Sandmeyer reaction

Q. Fluorobenzene can be synthesized in the laboratory by ____.

1. heating phenol with HF and KF
2. diazotization of aniline followed by heating with HBF₄
   
3. direct fluorination of benzene using fluorine gas
4. reacting bromobenzene with NaF solution

Q. $C_2{H}_2\to$ 3, 3- dibromohexane

Q. A mixture of 1 mole of benzaldehyde and 1 mole of acetophenone when reacted with $I_2/NaOH$ gives a yellow precipitate. The final mixture will contain ______ moles of iodoform.

Q. Fluorobenzene can be synthesized in the laboratory by ____.

1. heating phenol with HF and KF
2. diazotization of aniline followed by heating with HBF₄
   
3. direct fluorination of benzene using fluorine gas
4. reacting bromobenzene with NaF solution

Q. Which of the following forms cationic micelles above certain concentrations?

1. Sodium dodecyl sulphate
2. Urea
3. Sodium acetate
4. Cetyl trimethyl ammonium bromide

Q. What is 'A' and 'B' respectively in the following reaction?

1. $A=C{u}_{2}C{l}_2,B=N_2$
2. $A=C{u}_2{I}_2,B=I_2$
3. $A=I_2,B=N_2$
4. $A=KI,B=N_2$

Q. Match the reactions with their name:

1. Schiemann reaction
2. Swarts reaction
3. Sandmeyer reaction