| S.No. | Operation |
Detail |
| 1. | Smiling Buddha | It was codename given to India’s first nuclear test explosion that took place at Pokhran on 18 May 1974. |
| 2. | Shakti | This refers to test explosions of five nuclear devices, three on 11 May and two on 13 May 1998, conducted by India at the Pokhran test range. |
| 3. | Blackboard | The scheme launched in 1987 to provide minimum essential facilities to all primary schools in the country. |
| 4. | Flood | A rural development programme started by India’s National Dairy Development Board (NDDB) in 1970 to create a nationwide milk grid. |