| Hess’s Law MCQ | (I) | (II) | (III) |
| 1. |
5. |
 |
 |
| 1992/MCQ31 | 2013/MCQ28 |
| 2. |
6. |
 |
 |
| 2010/MCQ32 | 2009/MCQ32 |
| 3. | 7. |
 |
 |
| 1999/MCQ32 | 2014(Revised)/MCQ27 |
| 4. |
8. |
 |
 |
| 2014/MCQ31 | 2014/MCQ32 |
| 9. | |
 |
|
| 2008/17 | |
| 10. | |
 |
|
| 2015/MCQ16 | |
| 11. | |
 |
|
| 2018/8 | |
| 12. | |
 |
|
 |
|
 |
|
 |
|
 |
|
| 2016/11 | |
| 13. | |
  |
|
| 2015/12 | |
| 14 | |
 |
|
| 2017/5 | |
| 15. | |
 |
|
| 2008/12 | |
| 16. | |
 |
|
| 2004/15 | |
| 17. | |
 |
|
| 2002/4 | |
| 18. | |
 |
|
| 2001/10 | |
| 19. | |
 |
|
| 2003/4 | |
| 20. | |
 |
|
