Some ways to control air and noise pollution:
(i) Particulate matter in the air can be reduced by fitting smoke stacks to factories with electrostatic precipitators, fabric filters, scrubbers and inertial separators.
(ii) Smoke can be reduced by using oil or gas instead of coal in factories.
(iii) In order to control noise pollution machinery and equipment can be used and generators should be fitted with silencers. Almost all machinery can be redesigned to increase energy efficiency and reduce noise.