Do alkynes react with arsenic trichloride?

Aromatic hydrocarbons are readily miscible in water and immiscible with organic solvents.

Which of the following is an example of meta directing group?

At which temperature, does cyclic polymerization of an alkyne occur?

Methane cannot be prepared by the reduction of alkenes or alkynes.

Which of the following is an example of ortho and para directing group?

Alkynes are ______ in nature and first four members are ______ gases.

Alkenes show ______ isomerism.