Assertion (A) : Iron rusts faster in moist air.
Reason (R) : Moisture accelerates the oxidation process.
In the light of the above statements, choose the most appropriate answer from the options given below :
The question asks to evaluate two statements about iron rusting:
Iron rusting is the oxidation of iron, forming iron oxides (commonly known as rust). This process requires oxygen and water. In the presence of moisture (water vapor or liquid water), the electrochemical reactions that lead to rusting are facilitated. Therefore, Assertion (A) is correct because iron does indeed rust more quickly in moist air compared to dry air.
The oxidation process, specifically the rusting of iron, involves electrochemical cells. Water acts as an electrolyte, allowing ions to move between the anodic and cathodic sites on the iron surface. It also participates directly in some reactions. This electrochemical pathway significantly speeds up the overall oxidation compared to a purely dry environment. Thus, Reason (R) is correct.
Reason (R) provides the scientific explanation for why Assertion (A) is true. Moisture accelerates the electrochemical oxidation process, which is the direct cause of iron rusting faster in humid conditions. Therefore, Reason (R) is the correct explanation of Assertion (A).
Based on the analysis, both Assertion (A) and Reason (R) are correct statements, and Reason (R) accurately explains Assertion (A).
The correct option is the one that states: Both (A) and (R) are correct and (R) is the correct explanation of (A).
Match List - I with List - II.
| List - I | List - II | |
|---|---|---|
| A. Apple, Orange, Fruits | I. | |
| B. Son, Mother, Father | II. | ![]() |
| C. Cat, Dog, Elephant | III. | ![]() |
| D. Player, Cricket, Ground | IV. | ![]() |
Choose the correct answer from the options given below :
For the sets $A=\{0, 1, 2, 3\}$, $B=\{2, 3\}$, $C=\{1, 2, 4\}$, Match List - I with List - II.
| List - I | List - II |
| A. $A - B$ | I. $\{2\}$ |
| B. $B \cap C$ | II. $A$ |
| C. $A \cup B$ | III. $\{1, 2\}$ |
| D. $A \cap C$ | IV. $\{0, 1\}$ |
Choose the correct answer from the options given below :
Match List - I with List - II : On the basis of share of expenditure in given pie chart.

| List - I | List - II |
| A. Percentage of Expenditure on Rent | I. $11.11$ |
| B. Percentage of Expenditure on Transport | II. $13.89$ |
| C. Percentage of Expenditure on Saving | III. $16.67$ |
| D. Percentage of Expenditure on Food | IV. $18.06$ |
Choose the correct answer from the options given below :