Four number-pairs have been given, out of which three

Brown rust of wheat is caused by

Which acid is the manufacture of synthetic rubber?

Metals generally have very high melting point. The metal which is exception to this property of metals is-

Under a single cropping pattern, it is normally recommended to consider __hp of tractor for every___ hectares of land.

Animal drawn MB plough is known as

Which of the following fish has lungs as labyrinth?

Which system is used to transfer fuel from the fuel tank to the fuel injection pump in a diesel engine?

Separating grain from chaff is called:

Which of the following breeding methods involves mating between closely related animals such as brother-sister or parent-offspring?

Pasteurisation is done in milk ………………………….