Carbon and Its Compounds

What is the atomic number of carbon?

• 7

• 5

• 6

• 12

Name the most common allotropes of carbon.

• Graphene, Amorphous Carbon, Charcoal

• Diamond, Graphite, Fullerenes

• Sodium, Calcium, Iron

• Silicon, Boron, Nitrogen

What is the chemical formula for methane?

• CH3OH

• CO2

• C2H6

• CH4

Describe the process of photosynthesis in relation to carbon dioxide.

• Carbon dioxide is a byproduct of photosynthesis.

• Photosynthesis uses carbon dioxide to produce glucose and oxygen.

• Photosynthesis converts glucose into carbon dioxide and water.

• Photosynthesis occurs only at night without carbon dioxide.

What type of bond is formed between carbon atoms in diamond?

• Ionic bond

• Metallic bond

• Covalent bond

• Hydrogen bond

What is the primary use of carbon black?

• Fuel additive in gasoline

• Food coloring agent

• Reinforcing agent in rubber products, especially tires.

• Insulation material for buildings

Explain the significance of carbon in organic chemistry.

• Carbon is significant in organic chemistry because it forms the backbone of organic molecules, allowing for diverse structures and functions.

• Carbon atoms cannot form multiple bonds with other elements.

• Carbon is only found in inorganic compounds.

• Carbon is not essential for life forms.

What are hydrocarbons? Give an example.

• Methane (CH4)

• Benzene (C6H6)

• Glucose (C6H12O6)

• Ethanol (C2H5OH)

How does carbon dioxide contribute to the greenhouse effect?

• Carbon dioxide has no effect on temperature changes.

• Carbon dioxide is a primary source of oxygen in the atmosphere.

• Carbon dioxide cools the atmosphere by reflecting sunlight.

• Carbon dioxide contributes to the greenhouse effect by trapping heat in the atmosphere.

What is the role of carbon in the formation of biomolecules?

• Carbon does not participate in any chemical bonding in biomolecules.

• Carbon is only found in proteins and not in other biomolecules.

• Carbon is primarily used for energy storage in cells.

• Carbon is essential for forming the backbone of biomolecules due to its ability to create stable covalent bonds.