Unique Nature of Carbon

What is a carbon nanotube?

• A molecule containing hydrogen and oxygen

• A type of organic compound

• A cylindrical nanostructure made of carbon

• A synthetic fiber used in clothing

Which of the following is NOT a main source of organic compounds?

• Petroleum

• Natural gas

• Coal

• Water

Who was the first to synthesize urea in the laboratory?

• Albert Einstein

• Friedrich Wohler

• Marie Curie

• Isaac Newton

What was the significance of Friedrich Wohler's experiment?

• It proved that organic compounds could be synthesized in the lab.

• It discovered a new element.

• It showed that all chemicals are organic.

• It demonstrated the use of carbon in electronics.

Which of the following is an example of an organic molecule?

• Water

• Salt

• Protein

• Iron

What is the primary reason for the diversity of organic chemicals?

• The abundance of hydrogen

• The versatility of the carbon atom

• The presence of oxygen

• The use of synthetic processes

How many bonding electrons does carbon have in its valence shell?

• Six

• Four

• Eight

• Two

What is catenation?

• The property of carbon to form long chains

• The reaction of carbon with water

• The process of carbon oxidation

• The ability of carbon to form ionic bonds

Which type of hydrocarbon contains only single bonds?

• Heterocyclic hydrocarbons

• Unsaturated hydrocarbons

• Saturated hydrocarbons

• Aromatic hydrocarbons

What distinguishes carbon from other elements in terms of chain formation?

• Carbon can form chains with more than eight atoms.

• Carbon is the only element that forms chains.

• Carbon cannot form rings.

• Carbon forms only ionic bonds.