Unsaturated hydrocarbon and Aromatic hydrocarbon

The structure of benzene can best be described as a ____.

• branched chain

• ring with a branched chain

• ring

• straight chain

Which of the following alkene is in gaseous state at room temperature?

• Butene
• Butane
• Pentene
• Pentyne

What is the general formula of the alkynes?

• C_nH_2n+1
• C_nH_2n+2
• C_nH_2n-1
• C_nH_2n-2

Name the compound.

• nonene
• 2,2-dimethyl-3-heptene
• 1,1,5-trimethyl-2-hexene
• 2,6-dimethyl-3-heptene

Tags

NGSS.HS-PS1-2

Phenol is the simplest aromatic hydrocarbon.

Benzene ring has a molecular formula of C5H6.

• Only first statement is true

• Only second statement is true

• All statements are true

• No statement is true

Benzene ring has a structural formula that is often formalized as that of a cyclopentatriene.

There are 3 double bonds and 3 single bonds present in a benzene ring.

• Only first statement is true

• Only second statement is true

• All statements are true

• No statement is true

The “circle-in-the-ring” structure for benzene denotes the electrons associated with the double bonds that move “around” the ring

Aromatic hydrocarbons are insoluble in water.

• Only first statement is true

• Only second statement is true

• All statements are true

• No statement is true

Aromatic hydrocarbons are good solvents for other polar materials.

Aromatic hydrocarbons are denser than water.

• Only first statement is true

• Only second statement is true

• All statements are true

• No statement is true

Benzene, monosubstituted benzenes, and many disubstituted benzenes are solids at room temperature.

Multi-substituted benzenes are commonly solids at room temperature.

• Only first statement is true

• Only second statement is true

• All statements are true

• No statement is true

Benzene itself is a colorless liquid.

Benzene is a non-flammable liquid.

• Only first statement is true

• Only second statement is true

• All statements are true

• No statement is true