Turpentine oil is obtained from
Pinus longifolia
Melia azadirachta
Eucalyptus
All of these
Bordeaux mixture can be prepared by mixing the copper sulphate with
A third generation pesticide is
The technology of biogas production was developed in India mainly due to the efforts of
Which of the following crops have been brought to India from New world?
Which one of the following pairs is wrongly matched ?