43) Which material is used for making files (tools)?

44) In Ferrite, carbon atom sits in............of the unit cell

45) Blast furnace for iron making is a............type of chemical reactor.

46) In thermodynamics the property which is not dependent on the mass or number of moles in a system are called.................of the system

47) Gibbsite is a mineral of which of the following metal?

48) Theoritical density(ρ) of a material can be computed (determined) by which of the following equation?
(where n=effective number of atoms in an unit cell, A=atomic weight and V= volume of the unit cell and N= Avogadro's number)

49) Arrange the following unit cell in decreasing order of effective number of atoms.
Hexagonal closed Pack (HCP), Simple Cubic(SC), Body Centred Cubic (BCC), Diamond cubic (DC)

50) A steel rod has an initial diameter of 12 mm. After fracture due to drawing the diameter becomes 10.5 mm. What is the value of true strain at fracture?(up to three decimal places)

51) Pearlite in steel is a............. And has ............shape

52) Smelting Reduction in Extractive Metallurgy is a process in which............

53) In which of the following material metallic bond is not found?

54) Which of the following property is not a structure sensitive property of a material? #GATE 2022

55) Sequence of reduction of iron oxides in the Blast Furnace is as follows........... #GATE 2022

56) Find the amount( in %) of total Ferrite in a 0.4 wt% carbon steel just below the eutectoid temperature. #GATE 2022

57) Which of the following metal oxide line is lowest in Ellingham Diagram?

58) Amorphous solids are those in which atoms or molecules are arranged ................

59) Which of following material has a well defined endurance limit in S-N curve? #GATE 2022

60) During tensile testing, the localized reduction in cross sectional area at the UTS is called.........

61) Which of the following is not a heat treatment process of steel?

62) Calcination, Roasting and Smelting Reduction are steps of which of the following Extractive Metallurgy process?