chemistry quiz

Two main types of hydrocarbons obtained from crude oil:

• Aliphatic hydrocarbons and asymptomatic hydrocarbons

• Aromatic hydrocarbons and Aliphatic hydrocarbons

• accreditation hydrocarbons and fractional hydrocarbons

• asymptomatic hydrocarbons and accreditation hydrocarbons

A petroleum consisting of hydrocarbon molecules with more carbon atoms has a lower boiling point.

• True

• False

The process of separating hydrocarbons in petroleum to give useful fuels and raw materials is called-

• fractional distillation

• distillation

• oil refining

• extraction

A _____ is a mixture of hydrocarbons with similar boiling points

• fuel

• aromatic hydrocarbon

• petroleum fraction

• fractioning tower

T/F

• True

• False

Aliphatic hydrocarbons contains benzene ring.

• True

• False

fractional distillation is used to_____ the mixture of hydrocarbons

• mix

• refine

• heat

• separate

a petroleum fraction with a lower boiling point is darker, more viscous; less volatile, less flammable, and burns less.

• True

• False

hydrocarbons only contain hydrogen and carbon

• True

• False

The second step of separating petroleum in the lab

• Heat the petroleum soaked in mineral wool very gently.

• Collect the various in turn in separate test tubes.

• Fractions with higher boiling point ranges come out one by one

• The fraction with the lowest boiling point range distils out first.