Question

Which of the following are compounds ?

( i ) CO ( ii ) Ca ( iii ) NO ( iv ) Co

Select one:
a. ( ii ) and ( iv )
b. ( i ) and ( iii )
c. ( i ) and ( ii )
d. ( ii ) and ( iii)
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Answer 1

Your answer is i & iii
That is option "b"

Rest are elements
Ca : Calcium
Co : Cobalt