All are wrong about alkenes, but that they are

When two carbon atoms share two electron pairs then they form

A. single bond

B. double bond

C. triple bond

D. coordinate covalent bond

What is the physical state of the first four alkanes?

A. solid

B. liquid

C. gas

D. plasma

What is the color of bromine?

A. brown

B. red

C. orange

D. reddish-brown

Loss of hydrogen halide is called

A. halogenation

B. dehydration

C. Dehydrohalogenation

D. hydrogenation

Which of the following is given off during ripening fruits and vegetables?

A. ethane

B. ethene

C. Ethyne

D. methane