ONLINE TEST - CHEMISTRY

What functional group is -OH?

• Hydroxyl

• Carboxyl

• Amino

• Carbonyl Ketone

How is a Carboxyl Group commonly written?

• -OH

• -COOH

• -CHO

• -CHOH

Which homologous series contains only C-C single bonds?

• Alkanes

• Alkenes

• Alcohols

• Carboxylic acids

The type of reaction that occur in alkene is

• Elimination

• Substitution

• Addition

• Combustion

What is the formula we use to determine the number of hydrogens an alkyne has?

• C_nH_2n

• C_nH_2n-2

• C_nH_2n+1

• C_nH_2n+2

Which two elements do all organic compounds contain?

• Carbon and Hydrogen

• Carbon and Oxygen

• Oxygen and Hydrogen

• Carbon and Nitrogen

Which one of the following characteristics is not correct for all of the members of the same homologous series?

• Same general formula

• Similar chemical properties, i.e. undergo the same reactions

• Varying physical properties, i.e. change in a predictable way

• Different functional group

The first four alkanes are listed below. In which list are they placed in the correct order, i.e. increasing number of carbon atoms?

• methane, ethane, propane, butane

• ethane, methane, propane, butane

• methane, ethane, butane, propane

• methane, propane, ethane, butane

Which type of bonding is present within organic molecules?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

Which list does NOT contain compounds found in the same homologous series?

• methane, ethane, propane, butane

• tridecane, tetradecane, pentadecane, hexadecane

• nonane, decane, undecane, dodecane

• Pentane, hexanol, heptane, octane