RRB Group-D Model Paper 14 with answers for online practice

Nichrome:

• Nichrome has high resistivity
• Nichrome is a non-magnetic alloy that is made up of mainly chromium and nickel.
• It has a very high melting point, that makes nichrome ideal to make high-temperature wires.
• It is used in heating elements such as hair dryers, toasters, and ovens also used to make the coils used in water heaters.

Explanation:

• Nichrome is the material which is very hard and very ductile.
• Now comparing other material Nichrome is highly ductile.
• The most common usage is as resistance wire, as heating elements, dental restorations (fillings), and in a few other applications.

Extra point:

This are some important terms

Hard - Can withstand external pressure (to some extent)

Ductile - Which can be drawn out into a thin wire.

Brittle - break without significant plastic deformation under tensile stress (sudden failure).

Malleability - ability of a solid to bend or be hammered into other shapes without breaking.