The major product of the following chemical reaction is:
1. | |
2. | |
3. | |
4. |
The dihedral angle of the least stable conformer of ethane is:
1. | 60° | 2. | 0° |
3. | 120° | 4. | 180° |
Among the following the correct example of a free-radical substitution reaction is:
1. | |
2. | |
3. | |
4. | \(\mathrm{CH}_3 \mathrm{CHO}+\mathrm{HCN} \rightarrow \mathrm{CH}_3 \mathrm{CH}(\mathrm{OH}) \mathrm{CN}\) |
The compound on reaction with NaIO4 in the presence of KMnO4 gives:
1. CH3COCH3
2. CH3COCH3 + CH3COOH
3. CH3COCH3 + CH3CHO
4. CH3CHO + CO2
If a compound of molecular formula shows optical isomerism, the compound will be:
1. | 2,3-Dimethyl pentane | 2. | 2,2-Dimethyl butane |
3. | 2-Methyl hexane | 4. | None of the above |
On ozonolysis, the alkene that gives the following product is:
1. | |
2. | \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}=\mathrm{CHCH}_2 \mathrm{CH}_3\) |
3. | \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}=\mathrm{CHCH}_3\) |
4. |
The molecular formula of diphenylmethane is C13H12.
The number of structural isomers possible when one of the hydrogens is replaced by a chlorine atom is:
1. | 4 | 2. | 8 |
3. | 7 | 4. | 6 |
Using anhydrous AlCl3 as a catalyst, which one of the following reactions produces ethylbenzene (PhEt):
1.
2.
3.
4.
The reaction of HBr with propene in the presence of peroxide gives:
1. 3-bromopropane
2. Allyl bromide
3. n-propyl bromide
4. Isopropyl bromide
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
1. | C2 H6 | 2. | C2H4 |
3. | C4H10 | 4. | C2H5Cl |