Which is the most essential function of an entrepreneur? 

Knowledge, technical skill, education etc. in economics, are regarded as 

Excise duty on a commodity is payable with reference to its 

The separation of cream from milk by churning is due to 

The density of milk can be obtained by the use of – 

What is measured in cusecs?

The age of trees is determined by its – 

Which of the following is usually not an air - pollutant?