See Answer
1: (a) Number of various atoms is equal on both sides, 2: (b) Number of various atoms is unequal no both sides, 3: (d) All of these, 4: (b) Decomposition, 5: (c) Quick lime, 6: (b) Slaked lime, 7: (d) Burning of coal, 8: (d) All of these, 9: (c) Nitrogen dioxide, 10: (d) Due to formation of iron sulphate