

MCQOPTIONS
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1. |
Which of the following is not a body covering of any animal? |
A. | Shell |
B. | Spiracle |
C. | \[6.023\times {{10}^{24}}\] atoms of Na |
D. | Scale |
E. | None of these |
Answer» C. \[6.023\times {{10}^{24}}\] atoms of Na | |