is purchase of chalk by the school intermediate or final good? also the swings and slides purchased by a park is a final or an intermediate good??
is interest on loan taken from a friend for purchasing bike included in national income?

 chalk purchased by a school will be treated as final goods because they are purchased for their own consumption purpose.. but swings purchased by park will be treated as intermediate goods because they are purchased in order to produce further service to those coming to the park.

chalk purchased is a final good , because it is outside the production boundary and is finally consumed in teaching you .

chalk is a final good because it is consumed by the school,it is purchased for consumption and not for the purpose of selling it or transforming it into other products.. 

Chalk purchased by School (an organisation delivering services) is an intermediate good as it loses its existence in the process of delivering educational services to the students.

FINAL GOODS; the goods which are meant either for consumption by consumers or for investment by firms are called final goods.

INTERMEDIATE GOODS; goods which are used as raw materials for producing other goods or for resale in the same year of purchase are called intermediate goods.

1 purchase of chalk by the school is a final good and not an intermediate good.

2 swings and slides purchased by the park is a final good.