Question

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12. Which of the following ele
chemically inert?
a) All metals
c) All metalloids e Noble gas
13. The first man made element is
at Technetium b ) Rhodium
c) Iron
d) Polonium
14. The metal present in chlorophyll is
a) Iron
D) Magnesium
c) Calcium
d) Copper
15. The metal present in Haemoglobin
is
al Iron
b) Magnesium
c) Calcium
d) Copper
​

Answer 1

12.nobal gas

13.iron

14.magnsium

15.iron

Answer 2

12)a all metals

13)d polonium

14)d magnesium

15)a iron

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