Question

21. Which of the following statements are
incorrect?
1. Reactivity of Al decreases if it is dipped
in nitric acid.
II. Carbon can reduce the oxides of Na
and Mg
III. NaCl is a good conductor of electricity
in solid state.
IV. Metals like K, Ca and Mg are always
found in free state in nature.
(A) I, II and III only (B) II, III and IV only
(C) I and III only (D) II and III only​

please answer fast

Answer 1

Answer:

Option (B) is the right answer

Explanation:

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