Which of the following is a free radical substitution reaction?

1. Benzene with Br₂/AlCl₃

2. Acetylene with HBr

3. Methane with Br₂/hv

4. Propene with HBr/(C₆H₅COO)₂

The reagent that can be used to distinguish between 1-butyne and 2-butyne is:
1.  \(\mathrm{HCl}\)
2.  \(\mathrm{O_{2}}\)
3.  \(\mathrm{B r_{2}}\)
4.  \(\mathrm{N a N H_{2}}\)${\mathrm{}}_{}$

In which of the following. E1 elimination is most favorable?

1. 

2. 

3. 

4. All of the above

The increasing order of electrophilic substitution for the following compounds is:

In Friedel craft reaction, Toluene can be prepared by:

1. C₆H₆ + CH₃Cl

2. C₆H₅Cl + CH₄

3. C₆H₆ + CH₂Cl₂

4. C₆H₆ + CH₃COCl

The reagent used to convert propene to 1-propanol is:

1. H₂O, H₂SO₄

2. B₂H₆, H₂O₂, OH^–

3. Hg(OAc)₂, NaBH₄/H₂O

4. Aq. KOH

Which of the following is not the characteristic of arenes?
1. More stability
2. Resonance
3. Delocalization of π electrons
4. Electrophilic addition

When 2-Bromopentane reacts with ethanolic KOH, the main product that is formed is:

Phenylacetylene undergoes a reaction with dilute H₂SO₄ in the presence of HgSO₄ to yield:
 

1.		2.
3.		4.

Compound 'A' on chlorination gives compound 'B'. 'B' reacts with alc. KOH to give gas 'C' which decolorizes Baeyer reagent. Ozonolysis of compound 'C' gives only HCHO compound. Compound 'A' is: