Formation of Diazonium Salts

Q.

A water molecule eliminated from alcohol molecule in the presence of acid is known as:

1. Birch reduction

2. Acidic dehydration

3. Dehydrohalogenation

4. Dehalogenation

Q. What is the product when aniline reacts with $HCl,NaN{O}_2$ at 0 - 5 ${}^{\circ }C$?

1. Nitrobenzene
2. There is no reaction in this temperature range
3. Benzenediazonium chloride
4. N, N-dimethylaniline

Q. Cyclobutylamine is treated with sodium nitrite and aqueous $HCl$ at $0-5^{\circ }C$. The products formed are:

1. 
2. 
3. 
4. 

Q. Which of the following compound does not undergo diazotization reaction?

1. 
2. 
3. 
4. 

Q. $C_{13}{H}_{10}O\stackrel{C{F}_{3}C{O}_{3}H}{\to }\left(A\right)\stackrel{H_3{O}^{+}}{\to }B+C$

With neutral $FeC{l}_3,C$ gives violet colour. B on decarboxylation and C on reduction with zinc dust, gives same compound. The correct statement is:

1. C gives dye test positive in weakly alkaline medium
2. C gives dye test positive in weakly acidic medium
3. C gives dye test positive in strongly alkaline medium
4. B can be formed by oxidation of toluene with chromyl chloride

Q. The order of basicity among the following compound is:

1. II > I > IV > III
2. IV > II > III > I
3. IV > I > II > III
4. I > IV > III > II

Q. What is the product when aniline reacts with $HCl,NaN{O}_2$ at 0 - 5 ${}^{\circ }C$?

1. Nitrobenzene
2. There is no reaction in this temperature range
3. Benzenediazonium chloride
4. N, N-dimethylaniline

Q. Identify the incorrect reaction(s) from the given:

1. I and III
2. III and IV
3. I, III and IV
4. I, II and IV