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ICSE Class 10 Chemistry Question 17 of 64

Metallurgy — Question 11

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Question

Question 11

Assertion (A): Sodium and potassium are reactive elements.

Reason (R): Sodium and potassium occur in free states

  1. Both A and R are true and R is the correct explanation of A.
  2. Both A and R are true but R is not the correct explanation of A.
  3. A is true but R is false.
  4. A is false but R is true.
Answer

A is true but R is false.

Explanation — Sodium and potassium are highly reactive in nature. Hence, assertion (A) is true. Sodium and potassium are so reactive. So, they do not occur in free states. They quickly combine with other elements. Hence reason (R) is false.