The main constituents of alloy 'brass' are

Options

A. Al and Mg
B. Fe and Cr
C. Cu and Sn
D. Cu and Zn

Explanation

To determine the main constituents of the alloy 'brass', we can follow these steps:

### Step 1: Identify the Composition of Brass
Brass is primarily an alloy made from two main metals. The two metals that constitute brass are copper and zinc.

### Step 2: Determine the Proportions of Each Metal
In brass, the typical composition is:
- Copper: 60% to 80%
- Zinc: 20% to 40%

### Step 3: Confirm the Properties of Brass
Brass is known for its malleability, ductility, and high tensile strength. These properties make it suitable for various applications.

### Step 4: Identify Common Uses of Brass
Brass is commonly used in making utensils, tubes, and various fittings due to its favorable properties.

### Conclusion
The main constituents of the alloy brass are copper and zinc.

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