Question

(day 42)

Dr. Aloysius found four homogeneous mixtures, but he thinks that only three are alloys. He tests each ine and determines their elemental compositions. which of the following is not a possible alloy

1.) iron, carbon, and nickel

2.) aluminum, and magnesium

3.) iron and nickel

4.) carbon and boron

Answer 1

the following is not a possible alloy

Ans: (4) carbon and boron

others are alloy as follow:

Magnalium is an aluminium alloy with 5% magnesium and 95% aluminum.

(1) iron, carbon, and nicke : Carbon steel, composed simply of iron and carbon, accounts for 90% of steel production. Low alloy steel is alloyed with other elements, usually molybdenum, manganese, chromium, or nickel, in amounts of up to 10% by weight to improve the hardenability of thick sections.

(2) aluminum, and magnesium : Magnesium is an aluminium alloy with 5% magnesium and 95% aluminum.

(3) iron and nickel : An iron–nickel alloy or nickel–iron alloy, abbreviated FeNi or NiFe, is a group of alloys consisting primarily of the elements nickel(Ni) and iron (Fe). It is the main constituent of the "iron" planetary cores and iron meteorites. The acronym NiFe refers to various chemical reactions that involve an iron–nickel catalyst or component, or in geology, to the general composition of planetary cores (including Earth's).