The correct Answer is A-4, B-1, C-2, D-3
Explanation
This question requires matching specific materials or colors with their corresponding geological or chemical classifications, often encountered in the study of minerals, rocks, and their properties.
Statement-wise Analysis
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A. White - 4. Limestone:
Correct. Limestone is a sedimentary rock primarily composed of calcium carbonate (CaCO3), which is typically white or off-white in its pure form. It is widely used as a building material and in various industrial processes.
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B. Red - 1. Haematite:
Correct. Haematite (Fe2O3) is an iron oxide mineral that is characteristically reddish-brown to black. It is the most important ore of iron and is known for its distinctive red streak.
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C. Green - 2. Chalcedony:
Correct. Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite. While chalcedony can occur in various colors, green varieties are common, such as chrysoprase (apple-green) or plasma (dark green).
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D. Binding Agent - 3. Resin:
Correct. Resin is a viscous substance of plant or synthetic origin that is typically convertible into polymers. It is widely used as a binding agent in various applications, including adhesives, paints, and composite materials, due to its ability to harden and bind other materials together.
Key Takeaway
The question tests knowledge of the characteristic colors and properties of common minerals, rocks, and industrial materials.