Question

what are alkynes?
o alkynes are hydrocarbons that cant contain double bonds between carbon atoms
o alkynes are hydrocarbons that contain only three carbon atoms
o alkynes are hydrocarbons that contain at least one triple bond between carbon atoms
o alkynes are hydrocarbons that contain at least one double bond between carbon atoms
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part b
how are they different from alkanes?
o alkynes are hydrocarbons that contain three or more carbon atoms when alkanes cant contain more than two carbons
o alkynes are hydrocarbons that contain at least one triple bond between carbon atoms when alkanes should not have c-c bonds of orde
o alkynes are hydrocarbons that cant contain double bonds between carbon atoms when alkanes should contain at least one double bond
o alkynes are hydrocarbons that cant contain double bonds between carbon atoms when alkanes should contain at least one triple bond

Explanation:

Alkynes are hydrocarbons with at least one triple bond between carbon atoms. Alkanes have only single - bonded carbon atoms (no double or triple bonds).

Answer:

For the first question: C. Alkynes are hydrocarbons that contain at least one triple bond between carbon atoms.
For the second question: B. Alkynes are hydrocarbons that contain at least one triple bond between carbon atoms when alkanes should not have C - C bonds of order higher than one (i.e., no double or triple bonds).