84) If two systems A&B are in thermal equilibrium with a third system C, then A&B will also be in thermal equilibrium with each other. This is the statement of which fundamental law of thermodynamics?

85) Which of the following is not a Comminution process in Mineral Beneficiation?

86) Which of the following is not a Smelting Reduction process?

87) Addition of which of the following element in Intrinsic Silicon semiconductor results in formation of P-type semiconductor?

88) The ratio of the size of octahedral void to the tetrahedral void of FCC crystal structure is.................. #GATE 2022

89) Which of the following unit cell has maximum number of space lattices?

90) Aluminum has atomic radius of 0.143 nm and has atomic weight of 26.98 g/mol. Find the theroritical density of Aluminum(g/cm3) upto two decimal.

91) Which of the following step is not a compulsory step for Metallography of metals or alloys?

92) Which of the following is not an iron ore or mineral?

93) Which of the following element can not form Interstitial Solid Solution with Iron?

94)Which of the following statement related to Ellingham Diagram is not TRUE? #GATE2022

95) Work Hardening of metals or alloys results in.......
I) Increase in ductility
II) Decrease in Ductility III) Increase in Hardness. #GATE 2022

96) Which of the following metal working process involves only Tensile force during working?

97) What kind of Indenter is used in Vickers Hardness Testing?

98) Ausforming is what kind of process?

99) Which of the following metal is extracted by Leaching?

100) Which of the following pair is FALSE? #GATE2022

101) What is the value of Heat of formation of an element in its standard state is?

102) A material with extremely low or neglibile toughness is called..........material

103) Second law of thermodynamics is concerend with which of the following?