Question

3. In the following question, a statement of
assertion (A) is followed by a statement of
reason (R).
Assertion: Alloys are homogeneous mixture of metals.
Reason: Alloys cannot be separated into their components by physical methods.
(a) Both A and R are true and R is
correct explanation of the assertion
О
(b) Both A and Rare true but R is not the
correct explanation of the assertion
O (c) A is true but R is false.
(d) A is false but R is true.

Answer 1

Answer:

d option. as alloys are not always homogeneous mixture it can be heterogeneous as nichrome. reason is not correct explanation even if we correct homogeneous by heterogeneous.

Answer 2

(d) Assertion is false but reason is true.

Explanation:

• An alloy is a homogenous mixture of two or more metals or non-metals or nonmetals mixed in a molten state.

• It can either be a solid solution of the elements of a single phase or a mixture of two or more metallic phases.
• Solid alloys give a single solid phase microstructure, and are therefore used where their properties are superior to those of pure component elements.

• Separation of components from alloys is not possible physically.
• Melting or liquidation is considered for separating alloys.
• Different metallurgical techniques are used according to the metals or non-metals involved in the alloy.