

MCQOPTIONS
Saved Bookmarks
1. |
There is no atmosphere on the moon, becaus? |
A. | It is closer to the earth and also it has inactive inter gases in it |
B. | It is too far from the sun and also it has very low pressure on its outer surface |
C. | Escape velocity of gas molecules is greater than their root mean square velocity |
D. | Escape velocity of gas molecules is less than their root mean square velocity |
Answer» E. | |