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 dihedral angle of the least stable conformer of ethane is:
1. | 60° | 2. | 0° |
3. | 120° | 4. | 180° |
The major product of the following chemical reaction is:
1. | |
2. | |
3. | |
4. |
An alkene on ozonolysis gives methanal as one of the products. Its structure is:
1. | 2. | ||
3. | 4. |
Which of the following alkane cannot be made in good yield by Wurtz reaction?
1. | 2,3-Dimethylbutane | 2. | n-Heptane |
3. | n-Butane | 4. | n-Hexane |
Which of the following statement(s) is/are correct about the elimination reaction of 2-Bromopentane to form pent-2-ene:
(a) -Elimination reaction
(b) Follows Zaitsev rule
(c) Dehydrohalogenation reaction
(d) Dehydration reaction
1. | (a), (c), (d) | 2. | (b), (c), (d) |
3. | (a), (b), (d) | 4. | (a), (b), (c) |
1. | 2. | ||
3. | 4. |
Match the bond line structures of hydrocarbons given in List I with the corresponding boiling points given in List II.
List-I (Compound) | List II (Boiling point in K) | ||
(a) | (i) | 300.9 | |
(b) | (ii) | 282.5 | |
(c) | (iii) | 309.1 | |
(d) | (iv) | 341.9 |
(a) | (b) | (c) | (d) | |
1. | (i) | (iv) | (iii) | (ii) |
2. | (iii) | (i) | (iv) | (ii) |
3. | (iii) | (iv) | (i) | (ii) |
4. | (iv) | (i) | (ii) | (iii) |
The compound obtained by addition of water to an alkyne having more than two carbons, in the presence of \(\mathrm{HgSO_4 }\) and dilute \(\mathrm{H_2SO_4}\) at 333K, is:
1. A vicinal diol
2. An aldehyde
3. An alcohol
4. A ketone