Question

Given below are two statements, one is labelled as Assertion $A$ and the other is labelled as Reason $R$
Assertion A: Carbon forms two important oxides - $CO$ and $CO _2 .CO$ is neutral whereas $CO _2$ is acidic in nature
Reason R : $CO _2$ can combine with water in a limited way to form carbonic acid, while $CO$ is sparingly soluble in water
In the light of the above statements, choose the most appropriate answer from the options given below

• A. A is not correct but $R$ is correct
• B. Both $A$ and $R$ are correct but $R$ is NOT the correct explanation of $A$
• C. Both $A$ and $R$ are correct and $R$ is the correct explanation of $A$
• D. A is correct but $R$ is not correct

Answer 1

The Correct Option is C

Step 1: Assertion A: Carbon indeed forms two important oxides — carbon monoxide (CO) and carbon dioxide (CO2).
Carbon monoxide (CO) is neutral, whereas carbon dioxide (CO2) is acidic in nature. This is true because CO does not form acidic solutions when dissolved in water, while CO2 forms carbonic acid (H2CO3) when dissolved in water, making it acidic.
Step 2: Reason R: CO2 can combine with water in a limited way to form carbonic acid (H2CO3), which is sparingly soluble in water. This is also correct, as carbonic acid is indeed formed when CO2 dissolves in water, and it does not completely dissolve, which is why it's considered sparingly soluble.
Conclusion: Since both statements are correct and the Reason (R) properly explains the Assertion (A), the correct answer is that both A and R are correct and R is the correct explanation of A.