MCQOPTIONS
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| 1. |
A hydrogen balloon floats up because of |
| A. | ir pressure decreases with decrease in height |
| B. | ir pressure decreases with decrease in weight |
| C. | eight of the balloon is less than the weight of air displaced by it. |
| D. | he pressure inside the balloon is more than the pressure outside it |
| Answer» D. he pressure inside the balloon is more than the pressure outside it | |