[BB Assistant Director-2012 : 2012BKB Senior Officer-2012 : 2012]
1. 13
2. 11
3. 10
4. 12
5. None of them
[BKB Senior Officer-2012 : 2012]
1. 18
2. 9
3. 12
4. 15
1. Dry
2. Steam
3. Wash
4. Evaporate
1. 25
2. 27
3. 20
4. 30
1. Electricity
2. Coal
3. Wood
4. Gas