An organic compound (A) on heatig produces two gases (B) and (C) and neutral oxide (D) which turns cobalt chloride paperr pink. Gas (B) turns lime water milky and produces an acidic solution with water. Gas (C) produces a poisonous gas (E) with chlorine gas, the gas, this gas with ammonia gives an organic compound (F) which on further reaction with (D) gives `NH_(3)` gas. Then, compound (A) and (F) can be found as:

Options

A. `H_(2)C_(2)O_(4) and NH_(2)CONH_(2)`
B. `CH_(3)COOH and NH_(2)CONH_(2)`
C. `CHCl_(3) and CH_(3)CONH_(2)`
D. `CH_(3)Cl and NH_(2)COONH_(4)`

Answer

To solve the problem step by step, we will analyze the information given about the organic compound (A) and the gases produced upon heating.

### Step 1: Identify the Neutral Oxide (D)
The problem states that the neutral oxide (D) turns cobalt chloride paper pink. This indicates that D is water (H₂O), as cobalt chloride turns pink in the presence of water.

**Hint:** Look for substances that can turn cobalt chloride paper pink; water is a common one.

### Step 2: Identify Gas (B)
Gas (B) is mentioned to turn lime water milky and produce an acidic solution with water. The only gas that fits this description is carbon dioxide (CO₂), as it reacts with lime water (calcium hydroxide) to form calcium carbonate, which is insoluble and causes the milky appearance.

**Hint:** Recall that lime water is a test for carbon dioxide; it turns milky when CO₂ is bubbled through it.

### Step 3: Identify Gas (C)
Gas (C) is produced alongside gas (B) and is involved in a reaction with chlorine gas to produce a poisonous gas (E). Since gas (B) is CO₂, gas (C) must be carbon monoxide (CO), as it can react with chlorine to form phosgene (COCl₂), which is indeed a poisonous gas.

**Hint:** Consider gases that can react with chlorine to form toxic compounds; carbon monoxide is a likely candidate.

### Step 4: Identify Poisonous Gas (E)
From the previous step, we established that gas (C) is carbon monoxide (CO). When CO reacts with chlorine (Cl₂), it produces phosgene (COCl₂), which is the poisonous gas (E).

**Hint:** Look for reactions between common gases and chlorine that yield toxic products.

### Step 5: Identify Organic Compound (F)
Gas (E), which is phosgene (COCl₂), reacts with ammonia (NH₃) to form an organic compound (F). The reaction between phosgene and ammonia produces urea (NH₂CONH₂).

**Hint:** Familiarize yourself with the reaction of phosgene with ammonia; it typically yields urea.

### Step 6: Confirm the Reaction of Compound (F) with D
The problem states that compound (F) reacts with the neutral oxide (D) to produce ammonia gas (NH₃). When urea (NH₂CONH₂) reacts with water (D), it can hydrolyze to produce ammonia.

**Hint:** Consider hydrolysis reactions involving urea and how they yield ammonia.

### Step 7: Identify Organic Compound (A)
The organic compound (A) is the one that produces gases (B) and (C) upon heating. Given that we identified gas (B) as CO₂ and gas (C) as CO, the organic compound must be oxalic acid (H₂C₂O₄). Heating oxalic acid decomposes it to produce CO₂ and CO.

**Hint:** Look for organic compounds that decompose to yield CO₂ and CO when heated.

### Final Answer
- Compound (A) is oxalic acid (H₂C₂O₄).
- Compound (F) is urea (NH₂CONH₂).

### Summary
- **A:** H₂C₂O₄ (oxalic acid)
- **B:** CO₂ (carbon dioxide)
- **C:** CO (carbon monoxide)
- **D:** H₂O (water)
- **E:** COCl₂ (phosgene)
- **F:** NH₂CONH₂ (urea)