Answer :
The chemical property of the substance from the following properties is the corrosion of metal. Thus, option c is correct.
In option first, the color of the chemical is a physical property of a substance. The color of a substance provides physical identification in the presence or absence of a particular chemical. For example, Sulfur and chlorine are yellow in color, pure copper is a reddish-brown solid, and elemental bromine is red in color.
In the second option, the density of a compound is also a physical property and is a very useful parameter to identify an element. For example, the density of water is 0.998 gm/ m³. and that of oil is 0.922 gm/m³, thus oil added with water floats on the surface of the water due to lower density. Similarly, the density of elements being solid at room temperature such as Iodine has a lower density compared to Zinc, Chromium, and tin.
In option third, Corrosion of metal is a chemical property Since here along with physical morphology, the chemical compound also changes. For example, upon corrosion of Iron Fe oxidizes with O₂ (Oxygen) and forms FeO₂, chemically name rust.
Fe + O₂ → FeO₂
In the Fourth option, the melting point of the chemical is physical property since this property of the compound can be identified without changing the chemical composition, this feature is useful for the distillation, purification, isolation, separation, etc of the chemical. It is a state of temperature at which a substance forms a pure substance existing at equilibrium.
Hence Option third is correct as being a chemical property.
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