Question -
In the species i) 4.0g of NaOH ii) 4.8g of SO2 iii) 4.0 g of CO2iv) 2.8 g of CaO, decreasing order of the weight of oxygen is
Options:
A .  iii, ii, i & iv
B .  i, ii, iv & iii
C .  ii, iii, iv & i
D .  ii, iii, i & iv
Answer: Option A : A 4.0g of NaOH contains 1.6g of Oxygen 4.8g of SO2contains 2.4g of Oxygen 4.0 g of CO2contains 2.9g of Oxygen 2.8 g of CaO contains 0.8g of Oxygen
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