Thermite is a mixture of `:`

Options

A. Fe powder and `Al_(2)O_(3)`
B. Al powder and `Fe_(2)O_(3)`
C. Cu powder and `Fe_(2)O_(3)`
D. Zn powder and `Cr_(2)O_(3)`

Answer

To determine what thermite is a mixture of, we can follow these steps:

### Step 1: Identify the Components of Thermite
Thermite is a specific type of mixture used in various applications, particularly in welding. It is essential to know the common components that make up thermite.

**Hint:** Look for the common elements used in high-temperature reactions.

### Step 2: Analyze the Options Given
The options provided are:
1. Fe powder and Al2O3
2. Al powder and Fe2O3
3. Cu powder and Fe2O3
4. Zn powder and Cr2O3

We need to analyze which of these combinations is known to create the thermite reaction.

**Hint:** Recall the common thermite reaction involving aluminum and iron oxide.

### Step 3: Recall the Thermite Reaction
The thermite reaction typically involves aluminum powder and iron(III) oxide (Fe2O3). When ignited, aluminum reduces iron oxide to iron, producing molten iron and aluminum oxide.

**Hint:** Think about the reaction that produces molten iron and the exothermic nature of the reaction.

### Step 4: Write the Reaction Equation
The balanced chemical equation for the thermite reaction is:
\[ 2Al + Fe_2O_3 \rightarrow 2Fe + Al_2O_3 \]
This shows that aluminum reacts with iron(III) oxide to produce iron and aluminum oxide.

**Hint:** Consider how the stoichiometry of the reaction helps in identifying the reactants.

### Step 5: Conclusion
From the analysis, we conclude that the correct mixture for thermite is:
**Aluminum powder and Iron(III) oxide (Fe2O3)**.

### Final Answer
Thermite is a mixture of **Al powder and Fe2O3**.

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