AP EAMCET Medical 23 Apr 2019 Shift 2 Paper

Identify collect statements from the following
i. Conventional smog is a mixture of smoke, SO3 and fog
ii. Conventional smog lias oxidizing nature
iii. In the photochemical smog, the imbmnt unsaturated hydrocarbons are converted into PAN. acrolein and HCHO
iv. Photochemical smog can be controlled by fixing catalytic converters in automobile engines