Hello aspirant,

Hope you are doing well

If we talk about particular west Bengal board so,

Failing in  one subject  in  West Bengal board  is same as failing in all the subjects. The  board  don't give the pass certificate until and unless you pass in all the subjects (in this case Also you are allowed to give compartment exam Of that particular subject). This is the rule for 12th class .

So in  class 11th also you will be allowed for giving compartment exam in one subject as in class 11th school have some powers for the students so they will give you some favour don't worry.

Hope this helps you

Feel free to ask any

All the best for your future