Understanding Carbon and Hydrocarbons

What is the unique ability of carbon that allows it to form various structures?

• It can lose electrons easily.

• It can form ionic bonds.

• It can exist in a gaseous state.

• It can form long chains and rings.

Which of the following is a characteristic of organic compounds?

• Inability to decompose

• High thermal stability

• High melting points

• Presence of carbon

What type of bond is formed when carbon shares its electrons with other atoms?

• Covalent bond

• Metallic bond

• Hydrogen bond

• Ionic bond

According to the octet rule, how many electrons does carbon need to achieve stability?

• 8 electrons

• 4 electrons

• 2 electrons

• 6 electrons

What is the suffix used for naming saturated hydrocarbons?

• -ene

• -yne

• -ane

• -ide

Which type of hydrocarbon contains only single bonds?

• Alkynes

• Alkanes

• Alkenes

• Aromatics

What is the general formula for alkenes?

• C_nH_2n-2

• C_nH_n

• C_nH_2n+2

• C_nH_2n

Which hydrocarbon is used as an alternative fuel in welding?

• Ethyne

• Methane

• Butane

• Propane

What is the simplest alkyne used in oxyacetylene torches?

• Butane

• Ethyne

• Propane

• Methane

What distinguishes alkenes from alkanes?

• Presence of triple bonds

• Presence of double bonds

• Presence of single bonds

• Presence of aromatic rings