Question

In the oil wells X forms the topmost layer, followed by Y and finally Z. X, Y and Z are respectively.​

Answer 1

Explanation:

because of the difference in their specific depravities, the water being the heaviest and taken as one compared to crude oil, almost 0.9- 0.97 and the gas being the lightest (Sp Gr 0.7- 0,8 when compared of air as 1)

Answer 2

ANSWER

X- NATURAL GAS

Y- OIL

Z- WATER