Blanket overhead rate is:

One single overhead absorption rate for the whole factory
Rate which is blank or nil rate
rate in which multiple overhead rates are calculated for each production department, service department etc
Always a machine hour rate
✅ The correct answer is A.
Blanket overhead rate is one single overhead absorption rate for the whole factory. It is a common absorption rate used throughout a factory and for all jobs and units of output irrespective of the departments in which they were produced or processed. It is a one single overhead absorption rate for the whole of the factory.

Responsibility Centre can be categorised into:

Cost Centres only
Profit Centres only
Investment Centres only
Cost Centres, Profit Centres and Investment Centres
✅ The correct answer is D.
Responsibility Centre can be categorised into Cost Centres, Profit Centres and Investment Centres. Responsibility centers are often categorized by the degree of authority and responsibility given to the manager.

In a joint process of production, two or more products that yield high volume of sales as compared to total sales of other products are classified as

split off product
joint product
sunk product
main product
✅ The correct answer is B.
In a joint process of production, two or more products that yield high volume of sales as compared to total sales of other products are classified as joint product. A joint product is a product that results jointly with other products from processing a common input. A joint product can be the output of a process with fixed or variable proportions.