The catalyst used in the conversion of benzene into acetophenone is:

1. Anhydrous AlCl₃

2. HNO₃

3. HCl

4. Heating

$\mathrm{Ethyne}<mspace\; width="1em"></mspace>\stackrel{?}{\to }$ $\mathrm{Benzene}$ 

The reagent used in the above conversion is:

1. Cr₂O₃

2. Alc. KOH

3. Red hot Fe

4. NaNH₂/liq.NH₃

The products of ozonolysis of 1,2-dimethyl benzene (o-xylene) are:

1. Methylglyoxal, 1, 2-dimethylglyoxal, and glyoxal

2. Methylglyoxal, 1, 3-dimethylglyoxal, and glyoxal

3. Methylglyoxal, 1, 4-dimethylglyoxal, and glyoxal

4. Methylglyoxal, 1, 5-dimethylglyoxal, and glyoxal

Which of the following will undergo nitration most easily: benzene, m-dinitrobenzene, or toluene?

Lewis acid(s) that can be used during the ethylation of benzene is/are: