Answer: 1.Sulfuric acid is a catalyst
2. Vanadium(v) oxide is a catalyst
1: a, 2:a, 3:a, 4:c, 5:d, 6:d, 7:c;
The physical properties of alkenes and alkynes are generally similar to those of alkanes or cycloalkanes with equal numbers of carbon atoms. Alkynes have higher boiling points than alkanes or alkenes, because the electric field of an alkyne, with its increased number of weakly held π electrons, is more easily distorted, producing stronger attractive forces between molecules.
Smog
formed by mixture of smoke and fog
