Unsaturation in organic compounds is detected by ...........

Draw the $cis$ and $trans$ structures of $hex-2-ene$. Which isomer will have a higher $b.p.$ and why?

When $CH_2=CH-COOH$ is reduced with $LiAlH_4$,the compound obtained will be:

An alkene on ozonolysis gives methanal as one of the products. Its structure is

In the following reaction $CH_3-C(CH_3)_2-CH=CH_2 \xrightarrow{H_2O/H^{+}} A \text{ (major)} + B \text{ (minor)}$,the major product $A$ is:

Ethylene reacts with ..... to form ethylene chlorohydrin.