Question

Heena classified some metals and non-metals on the basis of their uses given in the table. How many classified
wrongly by Heena?
Column-1
Column-11
a. Oxygen i Fertilizers
b. Mercury ii. Thermometers
c. Nitrogen ii. Breathing
d. Chlorine iv.Water Purification
e. Iron
v. Galvanization
f. llodine vi Antiseptic
g. Magnesium vii Heamoglobin​

Answer 1

Answer:

Oxygen , nitrogen ,and magnesium are wrongly paired.

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Answer 2

Answer: 3 are wrong

Explanation: Oxygen, Nitrogen and Magnesium