Category Archives: Phase Transformation MCQ

This set of Phase Transformation Question Bank focuses on “Solids Diffusional Transformations – Heterogeneous Nucleation”. 1. Nucleation in solids, as in liquids, in most cases is always __________ a) Homogeneous b) Heterogeneous c) Mixed d) Semi heterogeneous 2. If the creation of a nucleus results in the destruction of a defect this will result in … Read more

This set of Phase Transformation Multiple Choice Questions & Answers (MCQs) focuses on “Homogeneous Nucleation in Solids”. 1. For both coherent and incoherent inclusion the misfit strain energy is proportional to____ a) Shape of the inclusion b) Mass of the inclusion c) Density of the inclusion d) Volume of the inclusion 2. If values of … Read more

This set of Phase Transformation MCQs focuses on “Solidification – Case Studies of Practical Casting and Weld”. 1. The process in which molten metal flows by gravity or other force into a mold where it solidifies in the shape of the mold cavity is known as_____ a) Rolling b) Ingots c) Extrusion d) Casting 2. … Read more

This set of Phase Transformation Quiz focuses on “Solidification During Quenching from the Melt”. 1. Solidification can also occur at much higher rates of 104-107K/s. In which among the following it is not applicable? a) Liquid metal atomization b) Melt spinning c) Roller quenching d) Solidification of weld 2. Which among the following solidification can … Read more

This set of Phase Transformation Multiple Choice Questions & Answers (MCQs) focuses on “Solidification of Fusion Welds”. 1. Which among the following is a property of fusion welding not of solid state welding? a) Filler metal is added b) Heat is applied c) Used to join metals d) Nothing can differentiate them 2. A fusion-welding … Read more

This set of Phase Transformation Multiple Choice Questions & Answers (MCQs) focuses on “Solidification of Ingots and Castings”. 1. Which among the following is not a zone in solidified alloy ingots? a) Columnar zone b) Outer chill zone c) Central equiaxed zone d) Coverage zone 2. Most engineering alloys begin by being poured or cast … Read more

This set of Phase Transformation Multiple Choice Questions & Answers (MCQs) focuses on “Alloy Solidification”. 1. The solidification of pure metals is rarely encountered in practice. Which among the following is a reason for this? a) Pure metals contain sufficient impurities b) Pure metals have high value of Tm c) Pure metals have low melting … Read more

This set of Phase Transformation Questions & Answers for Exams focuses on “Solidification – Growth of a Pure Solid”. 1. Name the process by which the migration of rough interfaces takes place? a) Lateral growth b) Vertical wipe c) Batch growth d) Continuous growth 2. In the continuous growth process the driving force for solidification … Read more

This set of Phase Transformation Multiple Choice Questions & Answers (MCQs) focuses on “Solidification – Nucleation in Pure Metal”. 1. Consider a given volume of liquid at a temperature T below Tm with a free energy G’. If some of the atoms of the liquid cluster together to form a small sphere of solid, the … Read more

This set of Phase Transformation Multiple Choice Questions & Answers (MCQs) focuses on “Interface Migration”. 1. In a way we can say that an interface is created during the____ a) Nucleation b) Destruction c) Vibration d) Growth 2. Most of the transformation products are formed during the growth stage by the_____ a) Transfer of atoms … Read more