Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test General Science Chemistry

The process with negative entropy change is

1
Synthesis of ammonia from N2 and H2
2
Dissociation of CaSO4 (s) to CaO(s) and SO3 (g)
3
Dissolution of iodine in water
4
More than one of the above
5
None of the above
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