Q. Ferrite and pearlite makes the steel soft and ductile.

View solution

Q. The lower critical temperature

View solution

Q. The quenching of steel from the upper critical point results in a fine grained structure.

View solution

Q. An alloy steel which is work hardenable and which is used to make the blades of bulldozers, bucket wheel excavators and other earth moving equipment contain iron, carbon and

View solution

Q. Which of the following has a fine gold colour and is used for imitation jewellery?

View solution

Q. When the steel is normalised, its

View solution

Q. White cast iron has a high tensile strength and a low compressive strength.

View solution

Q. Cast iron is a

View solution

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

View solution

Q. Malleable cast iron is produced

View solution

Q. Smelting is the process of

View solution

Q. The percentage of carbon in cast iron varies from

View solution

Q. Tungsten when added to steel __________ the critical temperature.

View solution

Q. Silicon when added to copper improves

View solution

Q. The alloying element which increases residual magnetism and coercive magnetic force in steel for magnets is

View solution

Q. Cast iron is manufactured in

View solution

Q. The lower critical point for all steels is

View solution

Q. Dye penetrant method is generally used to locate

View solution

Q. The charge is fed into the blast furnace through the

View solution

Q. A small percentage of boron is added to steel in order to

View solution