The following two reactions of `HNO_3` with Zn are given as (equations are not balanced)
Zn + conc. `HNO_3 to Zn(NO_3)_2 + X + H_2 O`......(i)
Zn + dilute. `HNO_3to Zn(NO_3 )_2 + Y + H_2 O......`(ii)
In reactions (i) and (ii), the compounds X and Y respectively, are

Options

A. `NO_2 and NO`
B. `NO_2 and NO_2`
C. `NO and NO_2`
D. `NO_2 and NH_4 NO_3`

Explanation

To solve the problem, we need to analyze the two reactions of zinc (Zn) with concentrated and dilute nitric acid (HNO₃) and identify the products X and Y.

### Step-by-Step Solution:

1. **Identify the Reaction with Concentrated HNO₃:**
- The reaction is:
\[ \text{Zn} + \text{conc. HNO}_3 \rightarrow \text{Zn(NO}_3\text{)}_2 + X + \text{H}_2\text{O} \]
- When zinc reacts with concentrated nitric acid, it typically produces zinc nitrate, nitrogen dioxide (NO₂), and water.

2. **Write the Balanced Equation for Reaction (i):**
- The balanced equation for the reaction with concentrated HNO₃ is:
\[ 4\text{Zn} + 10\text{HNO}_3 \rightarrow 4\text{Zn(NO}_3\text{)}_2 + 4\text{NO}_2 + 5\text{H}_2\text{O} \]
- From this equation, we can see that X is nitrogen dioxide (NO₂).

3. **Identify the Reaction with Dilute HNO₃:**
- The reaction is:
\[ \text{Zn} + \text{dil. HNO}_3 \rightarrow \text{Zn(NO}_3\text{)}_2 + Y + \text{H}_2\text{O} \]
- When zinc reacts with dilute nitric acid, it produces zinc nitrate, ammonium nitrate (NH₄NO₃), and water.

4. **Write the Balanced Equation for Reaction (ii):**
- The balanced equation for the reaction with dilute HNO₃ is:
\[ 4\text{Zn} + 10\text{HNO}_3 \rightarrow 4\text{Zn(NO}_3\text{)}_2 + \text{NH}_4\text{NO}_3 + 3\text{H}_2\text{O} \]
- From this equation, we can see that Y is ammonium nitrate (NH₄NO₃).

5. **Conclusion:**
- Therefore, the products X and Y are:
- X = NO₂ (nitrogen dioxide)
- Y = NH₄NO₃ (ammonium nitrate)

### Final Answer:
- X = NO₂
- Y = NH₄NO₃