Arrange the following halides in decreasing order of their reactivity towards dehydrohalogenation:

D > B > A > C
| Molisch's lest | Barfoed Test | Biuret Test | |
|---|---|---|---|
| A | Positive | Negative | Negativde |
| B | Positive | Positive | Negative |
| C | Negative | Negative | Positive |
The following molecule with the structure acts as
The common name of benzene -1, 3- diol is
Arrange the following in the correct order of their reactivity towards nucleophilic addition reactions
R is one of the monomers for the formation of a polymer called