Discussion
Which of the following is not true for minerals ?
Answer: D
The statement that is not true is All minerals are non-metallic.
Minerals are classified as metallic and non-metallic. Metallic minerals contain metal in raw form, such as iron ore, bauxite and manganese ore, while non-metallic minerals, such as limestone, mica and gypsum, do not. So minerals are certainly not all non-metallic.
The other statements are NCERT's description of minerals: they are naturally occurring substances, they have a definite chemical composition, and they are formed in different types of geological environments, under varying conditions.
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