Name the alloys of iron, aluminium, nickel and cobalt.

Brass

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Bronze

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Solder

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Alnicos

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Solution

The correct option is D Alnicos
Alnico is an acronym referring to a family of iron alloys which in addition to iron ore composed primarily of $A l, N i$ and $C o - A l N i C o$ . They also include copper and sometimes titanium.

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Similar questions

Match the alloys of column I with their constituents of column II

List - A	List - B	List - C
A. Stainless Steel	a. Iron + nickel + cobalt + aluminium	i. Electrical contact part
B. Alnico	b. Iron + carbon + chrominum + nickel	ii. Sports medal
C. Invar Steel	c. Copper + zinc + tin	iii. Surgical instruments
D. Brass	d. Iron + carbon + nickel (large quantity)	iv. Aeroplane body
	e. Aluminium + copper + magnesium + manganese	v. Permanent magnets
	f. Copper + zinc	vi. Precision measuring instruments

Metals like iron, aluminium, cobalt and nickel become passive when treated with pure concentrated nitric acid.

An alloy of iron, chromium and nickel is:

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