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Question

Which of the following substance will not give carbon dioxide on treatment with dilute acid?


A

Marble

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B

Limestone

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C

Baking soda

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D

Lime

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Solution

The correct option is D

Lime


Explanation for correct option:

D. Lime

Reaction of metallic oxide with acid:

  • When a metallic oxide reacts with dilute Hydrochloric acid, it produces salt and water.
  • The general chemical reaction can be depicted as:

Metallicoxide+acidsalt+water

Reaction of Lime with dilute Hydrochloric acid:

  • When LimeCaO reacts with dilute Hydrochloric acidHCl, it produces Calcium chlorideCaCl2 and waterH2O.
  • The chemical reaction can be depicted as:

CaO(s)+2HCl(aq)CaCl2(s)+H2O(l)

Thus, in this reaction, no Carbon dioxide is produced as shown above.

Explanation for incorrect options:

Marble, limestone, and baking soda are all metal carbonates or bicarbonates, which yield carbon dioxide.

Reaction of Metal carbonates/bicarbonates with acid:

  • When metal carbonate/bicarbonates react with acid, it produces metal salt along with the liberation of carbon dioxideCO2.
  • The general chemical reaction can be depicted as:

Metalcarbonates/bicarbonates+AcidMetalsalt+Carbondioxide

Thus, options A, B, and C are incorrect. Hence, the correct option is D i.e. Lime.


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