AP EAMCET 22 May 2023 Shift 1 Paper

Among the following the correct statements are
I. Carbon black is obtained by burning hydrocarbons in a limited supply of air II. Carbon black is obtained by burning hydrocarbons in absence of air III. Coke is obtained by burning coal at high temperatures in a limited supply of air
IV. Coke is obtained by buming coal at high temperatures in absence of air