The reaction of C₆H₅CH $$=$$ CHCH₃ with HBr produces

When initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the reaction is

The activation energy of a reaction can be determined from the slope of which of the following graphs?

Nitrogen dioxide and sulphur dioxide have some properties in common . Which property is shown by one of these compounds , but not by the other?