Q. In a close packed hexagonal space lattice, there are

View solution

Q. Which of the following iron exists at 910° C?

View solution

Q. The iron ore mostly used for the production of pig iron is

View solution

Q. A carbon steel having Brinell hardness number 100 should have ultimate tensile strength closer to

View solution

Q. The steel widely used for making precision measuring instruments is

View solution

Q. The ductility is the property of a material due to which it

View solution

Q. The malleability is the property of a material due to which it can be rolled or hammered into thin sheets.

View solution

Q. The process of inducing carbon to __________ carbon steels in order to give it a hard surface is known as carburising.

View solution

Q. Which of the following solids are malleable and ductile?

View solution

Q. The delta-iron possesses a body centred cubic space lattice.

View solution

Q. Thermosetting plastics are those materials which

View solution

Q. Silicon is added in low carbon steels to

View solution

Q. According to Indian standard specifications, cast iron designated by 'FG 150' means

View solution

Q. The red flame during the operation of a bessemer converter indicates that the

View solution

Q. Phosphor bronze has

View solution

Q. In the austempering process of heat treatment, austenite changes into

View solution

Q. Iron-carbon alloys containing 4.3% carbon are known as hypo-eutectic cast irons.

View solution

Q. The approximate height of a blast furnace is

View solution

Q. A steel alloy containing 36% nickel is called

View solution

Q. The addition of manganese to aluminium improves corrosion resistance.

View solution