Subject :NSO Class : Class 9
Arrange the following in the order of increasing mass. (Atomic mass of O = 16 u, Cu = 63 u, N = 14 u)
I. one atom of oxygen
II. one atom of nitrogen
III. 1 × 10-10 mole of oxygen gas
IV. 1 × 10-10 mole of copper
AII < I < III < IV
BI < II < III < IV
CIII < II < IV < I
DIV < II < III < I
answer is option A
Ans 1:
Class : Class 9
Ans 2:
Class : Class 10
Ans 3:
Class : Class 9
Ans 4:
Class : Class 9