Ratio between two numbers is 3:5 and their difference

Law of Demand shows a relationship between the quantity demanded of a commodity to its unit

Browning in cauliflower is due to deficiency of

Feni is made from

Which plough helps cutting of creeping or spreading grass and inversion?

What is the percentage of nitrogen in urea on weight basis?

Which of the following scientists are credited with the discovery and understanding of the excretory role of Malpighian tubules in insects?

In insect population which have only one generation a year, the shape of population growth curve is:

Separation of rice from the paddy is calling hulling. The hulling % of rice is _____

Weed cause relatively more yield loss of rice when the crop is 

Crown Gall disease is caused by