In which reaction a combustible substance reacts with oxygen to give carbon dioxide, water and energy?

Options

A. Spontaneous combustion
B. Incomplete combustion
C. Complete combustion
D. Rapid combustion

Answer

To answer the question, we need to identify the type of reaction where a combustible substance reacts with oxygen to produce carbon dioxide, water, and energy. Here’s the step-by-step solution:

### Step 1: Understanding Combustion
Combustion is a chemical reaction that occurs when a substance (usually a hydrocarbon) reacts with oxygen. This reaction typically produces heat and light.

**Hint:** Remember that combustion involves oxygen and often produces energy in the form of heat and light.

### Step 2: Identifying the Products
In a complete combustion reaction, the products are carbon dioxide (CO₂) and water (H₂O). This occurs when there is a sufficient supply of oxygen.

**Hint:** Look for the products of combustion; they are typically carbon dioxide and water.

### Step 3: Recognizing the Type of Combustion
There are two types of combustion:
- **Complete Combustion:** Occurs when there is a sufficient supply of oxygen, resulting in carbon dioxide and water.
- **Incomplete Combustion:** Occurs when there is a limited supply of oxygen, leading to the production of carbon monoxide (CO) and/or soot (carbon particles), along with water.

**Hint:** Think about the conditions under which combustion occurs: is there enough oxygen?

### Step 4: Conclusion
The reaction described in the question is **complete combustion**, where a combustible substance reacts with oxygen to produce carbon dioxide, water, and energy.

**Final Answer:** The reaction in which a combustible substance reacts with oxygen to give carbon dioxide, water, and energy is called **complete combustion**.