Chemistry Quiz

What is the general formula for alkanes?

• A.

  C_nH_2n+2

• B.

  C_nH_2n

• C.

  C_nH_2n-2

• D.

  C_nH_2n+1

Which of the following is an alkene?

• A. Methane

• B. Ethene

• C. Propane

• D. Butane

What do we observe when bromine water is added to an alkene?

• A. Orange

• B. Colourless

• C. Brown

• D. Pink

Which process is used to separate crude oil into fractions?

• A. Cracking

• B. Polymerization

• C. Fractional distillation

• D. Combustion

What is the main use of alkenes?

• A.

  Fuels

• B.

  Solvents

• C.

  Making polymers

• D.

  Lubricants

Which of the following is a property of hydrocarbons with longer chains?

• Lower boiling points

• Higher viscosity

• Higher flammability

• Lower density

What is the name of the reaction where alkenes react with hydrogen?

• A.

  Hydration

• B.

  Hydrogenation

• C.

  Halogenation

• D.

  Polymerization

Which of the following is a product of the complete combustion of hydrocarbons?

• A. Carbon monoxide

• B. Water

• C. Soot

• D. Methane

What is the approximate percentage of nitrogen in the Earth's atmosphere?

• A. 21%

• B. 78%

• C. 0.04%

• D. 1%

Which gas is a major contributor to the greenhouse effect?

• A. Oxygen

• B. Nitrogen

• C. Carbon dioxide

• D. Argon