Green revolution in India occurred during:
1. 1960’s
2. 1970’s
3. 1980’s
4. 1950’s

Three crops that contribute maximum to global food grain production are                  
1. wheat , rice and maize
2. Rice, maize and sorghum
3. Wheat, maize and sorghum
4. Wheat, rice and barley 

The name of Norman Borlaug is associated with  
1. Green revolution
2. White revolution
3. Yellow revolution
4. Blue revolution