Key Aspects of Alkynes

What is the general formula for alkynes?

• C_nH_2n-4

• C_nH_2n-2

• C_nH_2n

• C_nH_2n+2

What is the functional group of alkynes?

• Carbon-hydrogen bond

• Carbon-carbon triple bond

• Carbon-carbon double bond

• Carbon-carbon single bond

What type of bonds are present in the carbon-carbon triple bond of alkynes?

• Three sigma bonds

• Three pi bonds

• Two sigma bonds and one pi bond

• One sigma bond and two pi bonds

What is the bond angle in the structure of alkynes?

• 180°

• 120°

• 90°

• 109.5°

Which of the following properties is true for alkynes?

• They are hydrophilic and polar

• They are hydrophobic and nonpolar

• They are hydrophilic and nonpolar

• They are hydrophobic and polar

Why are alkynes more reactive than alkenes in certain addition reactions?

• Due to their polar structure

• Due to their hydrophilic nature

• Due to the electron-rich triple bond

• Due to the presence of a single bond

How are alkynes named in IUPAC nomenclature?

• By replacing '-ane' with '-yne'

• By replacing '-ane' with '-ene'

• By replacing '-ene' with '-yne'

• By replacing '-yne' with '-ane'

What is the name of the alkyne derived from ethane?

• Ethyne

• Ethanol

• Ethanal

• Ethene

Which of the following is NOT a property of alkynes?

• Hydrophobic

• Nonpolar

• Electron-rich triple bond

• Water-soluble

What is the significance of the number in the name of an alkyne?

• It indicates the molecular weight

• It indicates the number of carbon atoms

• It indicates the position of the triple bond

• It indicates the number of hydrogen atoms