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Types of Chemical Reactions — Science STD 10 — Question

Tamilnadu BoardEnglish MediumSTD 10ScienceTypes of Chemical Reactions1 Mark
Question
Assertion (A): Powdered calcium carbonate reacts more quickly with hydrochloric acid than marble chips.
Reason (R): Powdered calcium carbonate offers a large surface area than marble chips. Because the greater the surface area, the greater is the rate of the reaction.
(a) Both (A) and (R) are wrong
(b) Both (A) and (R) are correct
(c) (A) is correct but (R) is wrong
(d) (A) is wrong but (R) is correct.
✓

Answer

(b) Both (A) and (R) are correct

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