Question

Here are a few statements related to alloys. Identify the incorrect ones and correct them.
i) It is a homogenous mixture of metals.
ii) Zinc amalgam is used in dental filling.
iii) Duralumin is used for making statues, coins, bells and gongs.
iv) Alloys are produced by compressing finely divided metals one over the other.
v) Zinc is the solvent of brass.

Answer 1

(1) Yes Alloy is a Homogeneous mixture of metals

Reason: Because by looking alloy you can not

distinguish that where are the composition metal.

(2) No, zinc amalgam is not used in dental filling

Reason: Silver amalgam is used for same.

(3) No, Duralumin is not used for making statues,

Coins, bells and gongs.

Reason:- It is alloy of Aluminum and copper,

mostly it is used for aircraft Machinery

and heavy duty machinery.

(4) No, Alloys are not produced by compressing

finely divided metals one over the other.

The process of making alloy is different.

(5) Zinc is solvent of brass.

Reason: Zinc has lower melting point.

(Brass- $45\%$ to $55\%$ zinc and $45\%$ to $55\%$ copper

$\therefore$ Less melting point is act as solvent and copper as solute. )

(A) An alloy is a mixture of various metals

that can also contain non-metals elements

Eg. Steal is an alloy of iron (metal) and

carbon (non-metal)