In figure 'o' is the centre of a circle. The area of sector OAPB is \( \frac{5}{18} \) of the area of the circle find x.
Select the option that correctly matches the contents of the first column with the contents of the second column.
| A. Calcium, Oxygen | I. Formula of Calcium Phosphide |
| B. CaโPโ | II. Elements present in Quicklime |
| C. 0.1 Moles | III. This number is known as the Avogadro constant |
| D. The fixed number of atoms or molecules present in gram atomic mass of an atom or molecules is 6.022 × 10²³ | IV. Are present in 2.3 g of Na |
A-II, B-I, C-IV, D-III
A-I, B-II, C-IV, D-III
A-II, B-IV, C-I, D-III
A-II, B-I, C-III, D-IV