$56.$ The process of $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ involves the conversion of methane and steam into synthesis gas, which consists primarily of $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ and carbon monoxide. $($a$)$ Steam cracking $($b$)$ Steam reforming $($c$)$ Catalytic reforming $($d$)$ Hydrocracking

$57.\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ is a common petrochemical product derived from naphthenes, commonly used as a fuel for automobiles and $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.($a$)$ Diesel $($b$)$ Gasoline $($c$)$ Jet fuel $($d$)$ Propane

$58.$ The main application of $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ in the petrochemical industry is the production of ammonia for fertilizers and $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.($a$)$ Synthesis gas $($b$)$ Hydrogen $($c$)$ Butylene $($d$)$ Ethylene

$59.\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ and $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ are common methods used in the refining process to remove impurities such as sulfur and nitrogen from feedstock. $($a$)$ Absorption $($b$)$ Cracking $($c$)$ Desalting $($d$)$ Polymerization