Subjective Type

True or False. Alnico can also be called as magnetic steel.

Solution

Alnico magnets were developed in the 1930's and were the first “Real” performance permanent magnets (the first “magnets”, called magnetic steels, were quickly replaced by the vastly superior Alnico). Alnico is produced by either a sintering method or, more commonly, a casting method.

SIMILAR QUESTIONS

Metals and Non - metals

Fill in the blanks: (a) Phosphorus is very _____ non-metal. (b) Metals are ____ conductors of heat and ____ . (c) Iron is ______ reactive than copper. (d) Metals react with acids to produce _____ gas.

Metals and Non - metals

A metal M which is one of the best conductor of heat and electricity used in making electric wires is found in the nature as sulphide ore, $$M_2S$$. Name the metal M.

Metals and Non - metals

There are 3 unknown metals- A, B and C. C displaces B from its oxide while with oxide of A, there is no reaction. Give the reactivity order of A, B and C.

Metals and Non - metals

True or False. Aeroplanes are made from alloys of Iron.

Metals and Non - metals

True or False. Cars are made from steel which is an alloy of carbon and aluminium.

Metals and Non - metals

Conceptual Questions How does a metal conduct heat?

Metals and Non - metals

The most durable metal plating on iron to protect against corrosion is :

Metals and Non - metals

Name the following metals: A metal which is unaffected by dilute or concentrated acids.

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