Q70 / 180 · NEET 2019 (Odisha) · Chemistry

Identify the incorrect statement.

  • A
    The scientific and technological process used for isolation of the metal from its ore is known as metallurgy
  • B
    Minerals are naturally occurring chemical substances in the earth's crust
  • C
    Ores are minerals that may contain a metal
  • Correct answer
    D
    Gangue is an ore contaminated with undesired materials

Solution

The earthly impurities like sand, clay, mica, etc., associated with ores are called gangue or matrix. In other words, contaminated undesired materials present in an ore is called gangue. Thus, statement (4) is incorrect while other options contain correct statements.

Hence, the correct answer is option: 'D'.

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