The alloy is-
(A) mixture of two or more metals
(B) a mixture of a metal and a non-metal
(C) cannot be separated into their components by physical methods
(D) brass is a mixture of zinc and tin
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A), (B) and (C) only
An alloy is a homogeneous mixture of two or more metals, or of a metal and a non-metal. Its components cannot be separated by physical methods, yet it is still called a mixture because it shows the properties of its components and its composition can vary.
(A) mixture of two or more metals Correct. Brass (copper and zinc) and bronze (copper and tin) are metal-with-metal alloys.
(B) a mixture of a metal and a non-metal Correct. Steel is iron with a little carbon, a non-metal.
(C) can not be separated into their components by physical methods Correct. The components are mixed evenly at the level of atoms, so filtering, picking or magnets cannot pull them apart.
(D) brass is a mixture of zinc and tin Incorrect. Brass is copper and zinc; copper with tin is bronze.