318296
Which of the following statements are correct?
(i) polynuclear hydrocarbons contain two or more benzene rings fused together
(ii) polynuclear hydrocarbons have carcinogenic property
(iii) polynuclear hydrocarbons are formed on in complete combustion of organic materials like tobacco, coal and petroleum
(iv) they are also produced in human body due to various biochemical reactions
318296
Which of the following statements are correct?
(i) polynuclear hydrocarbons contain two or more benzene rings fused together
(ii) polynuclear hydrocarbons have carcinogenic property
(iii) polynuclear hydrocarbons are formed on in complete combustion of organic materials like tobacco, coal and petroleum
(iv) they are also produced in human body due to various biochemical reactions