Organic Chemistry I

Which of the following fractions is used as a feedstock for the chemical industry?

• Petrol

• Naphtha

• Bitumen

• Diesel

Which of these might be an alkene or a cycloalkane?

• C₄H₈

• C₁₁H₂₄

• C₁₂H₂₆

• C₉₄H₁₉₀

Which of these might contain two C=C bonds?

• C₆H₁₄

• C₄H₁₀

• C₁₂H₂₆

• C₆H₁₀

Carbon monoxide is toxic because….

• ...it binds strongly to the iron atom in haemoglobin, preventing the blood from carrying oxygen.

• .…it causes toxic levels of carbonic acid, lowering the pH of the blood.

• .…binds to a cytochrome-P450 enzyme, inhibiting metabolism of common toxins.

• .…it causes constriction of airways in the lungs, restricting oxygen intake.

What is the name of the process where large alkanes molecules are broken up into a shorter alkane and an alkene?

• Fractional distillation

• Cracking

• Combustion

• Addition

Which of the following statements about alkanes is true?

• They are unsaturated hydrocarbons

• They are more reactive than alkenes

• They react with chlorine in a substitution reaction

• They turn bromine water colourless

Which of these is not a polymer?

• styrene

• nylon

• poly(ethene)

• DNA

What is the correct repeat unit for the polymer

poly(propene)?

• 
• 
• 
• 

Which of these is a true statement about addition polymerisation?

• it is carried out using saturated molecules called monomers

• it is the thermal decomposition of plastics

• it is the joining together of many small alkene molecules called monomers

• it is a multiplication reaction

What is correct IUPAC the name for this organic molecule?

• propane

• 1-chloropropane

• 2-chloropropane

• 3-chloropropane