The boiling point to water is more than that of ethyl alcohol. What does it signify.

The boiling point of heavy water is

Standard boiling point of water is

Boiling point of ethane is more than that of methane. Assign reason.

Why the boiling point of ethyl bromide is higher than that of ethyl chloride?

Boiling point of ethyl chloride is higher than that of ethyl bromide.

The boiling point of propionic acid is less than that of n-butyl alcohol, an alcohol of comparable molecular weight.

What is red shift? What does it signify?