The reference number system ranks topographical maps by scale, with smaller numbers representing larger scale maps.
LIST I | LIST II |
---|---|
A. Million sheet | I. 4°x4° |
B. Quarter-inch sheet | II. 1°x1° |
C. Half-inch sheet | III. 30'x30' |
D. Special sheet | IV. 7'30"x7'30" |
Europium (Eu) resembles Calcium (Ca) in the following ways:
(A). Both are diamagnetic
(B). Insolubility of their sulphates and carbonates in water
(C). Solubility of these metals in liquid NH3
(D). Insolubility of their dichlorides in strong HCI
Choose the correct answer from the options given below: