Question Type: General Knowledge/Material Science
Step-by-step solution:
The question asks to identify the material which is not an alloy among the given options. An alloy is a metallic material that is composed of two or more chemical elements, where at least one element is a metal. Let's analyze each option:
- Steel: An alloy of iron and carbon, often with other elements added.
- Brass: An alloy primarily of copper and zinc.
- Bronze: An alloy primarily of copper and tin.
- Copper: A pure metallic element; it is not a mixture of different elements, thus not an alloy.
Therefore, copper is the only material in the list that is not an alloy.
Eliminating incorrect options: Steel, brass, and bronze are all well-known alloys. Their properties differ from the base metals due to the alloying process.
Core Logic/Pattern: Understanding the definition of an alloy is crucial. Alloys are mixtures of metals (and sometimes non-metals), creating materials with improved properties. Copper, being a pure element, does not fit this definition.
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Important Questions from Metals & Non-metals
Due to improper/indiscriminate disposal of hold and used computers or their parts, which of the following are released into the environment as e-waste?
1. Beryllium
2. Cadmium
3. Chromium
4. Heptachlor
5. Mercury
6. Lead
7. Plutonium
Select the correct answer using the codes given below:
Recently, there has been a concern over the short supply of a group of elements called 'rare earth metals'. Why?
1. China, which is the largest producer of these elements, has imposed some restrictions on their export.
2. Other than China, Australia, Canada and Chile, these elements are not found in any country.
3. Rare earth metals are essential for the manufacture of various kinds of electronic items and there is a growing demand for these elements.
Which of the statements given above is/are correct?
Which of the following metals CANNOT be cut with a knife?
Which of the following will be formed when dilute hydrochloric acid is added to a beaker having copper oxide ?
Which of the following statement is incorrect regarding metals?
