Question

Alnico is an alloy of ________.
(A). Ai, Ni, Cu, P
(B). Al, Ni, Cu, Co
(C). Al, Ni, As, O
(D). Al, As, P, Pt

Answer 1

Hint: The name ‘Alnico’ is formed by concatenating the symbols of its substitutes. Hence the names of its elements can be discovered by separating it into three equal parts giving the symbols of three different metals by which it is primarily formed.

Complete step-by-step solution -

Alnico belongs to the family of iron alloys and it is primarily formed by elements like Aluminium whose symbol is Al, Nickel having symbols as Ni and Cobalt whose symbol is Co. Therefore, the acronym Alnico is given to this alloy. They can also include Copper having symbol Cu and sometimes titanium also. These are ferromagnetic alloys and are used to make permanent magnets also. These make very strong and have a larger life than normal magnets. There are 3 different types of this alloy, Alnico II, Alnico III and Alnico V. So, if we separate the key words from Alnico i.e. Al-Ni-Co, it gives Aluminium, Nickel and Cobalt which are the primary metals required to form this alloy. Further copper and other metals are also added in it in very less proportion to primary metals.
Hence option (B) is the correct answer.

Note- Alloys are made by combining two or more metals together to enhance the properties of a metal and to form a more reliable metal having better properties. For this question, the symbols of elements should be memorized which will make it easier to predict the answer.