

MCQOPTIONS
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1. |
Which among the following is not true about air? |
A. | Air is a mixture of gases. |
B. | We can see air. |
C. | Z completes a rotation around X in about 28 days. |
D. | Air contains dust particles. |
E. | None of these |
Answer» C. Z completes a rotation around X in about 28 days. | |