This set of Materials Science Multiple Choice Questions & Answers (MCQs) focuses on “Microscopic Examination”. 1. Calculate the average number of grains per square inch at a magnification of 100. Consider grain number is 40? a) 5.49*109 b) 5.49*107 c) 5.49*1011 d) 5.49*106 2. For grain size number (ASTM) which of the following is true? … Read more
This set of Materials Science Multiple Choice Questions & Answers (MCQs) focuses on “Interfacial Defects”. 1. Annealing twins which are found in metal have which type of crystal structure? a) BCC b) FCC c) HCP d) HCP and BCC 2. At room temperature what is an approximate order of vibration frequency in vibration per second? … Read more
This set of Materials Science Question Paper focuses on “Linear Defects – 2”. 1. Which type of defect are line defects? a) One-dimensional defect b) Zero-dimensional defect c) Two-dimensional defect d) Three-dimensional defect 2. Edge dislocation and skew dislocation are linear crystalline defects. a) True b) False 3. Which of the following statement is false? … Read more
This set of Materials Science Multiple Choice Questions & Answers (MCQs) focuses on “Linear Defects – 1”. 1. A dissolution in which an extra portion of a plane of atoms or a half plane terminates within a crystal is called as ________ a) Edge dislocation b) Mixed dislocation c) Interfacial dislocation d) Screw dislocation 2. … Read more
This set of Materials Science Problems focuses on “Point Defects – 2”. 1. Which thermodynamic property increases in a crystalline solid due to the presence of vacancies? a) Enthalpy b) Entropy c) Internal energy d) Work done 2. Which type of diffusion occurs due to the exchange of an atom with vacancies? a) Substitution diffusion … Read more
This set of Materials Science Multiple Choice Questions & Answers (MCQs) focuses on “Point Defects – 1”. 1. Which type of defect are point defects? a) One dimensional defect b) Zero dimensional defect c) Two dimensional defect d) Three dimensional defect 2. Which of the following point defects can be attributed to from the below … Read more
This set of Materials Science Interview Questions and Answers for Experienced people focuses on “Classification of Crystallographic Defects”. 1. Frenkel defect belongs to which of the following classes? a) Point defect b) Linear dislocation c) Interfacial defect d) Bulk defect 2. The ratio of the number of vacancies to a total number of lattice points … Read more
This set of Materials Science Multiple Choice Questions & Answers (MCQs) focuses on “Amorphous Solids”. 1. Which of the following properties is generally exhibited by amorphous solids? a) Anisotropy b) Glass-transition c) Equal strength of all bonds d) All of the mentioned 2. Metal glass was first prepared at: a) California Institute of Technology b) … Read more
This set of Materials Science Multiple Choice Questions & Answers (MCQs) focuses on “Bragg’s Law”. 1. X-rays have larger wavelengths than which of the following? a) Gamma rays b) Beta rays c) Microwave d) Visible light 2. X-ray diffraction patterns are used for studying crystal structure of solids because a) They have very high energy, … Read more
This set of Materials Science Questions and Answers for Entrance exams focuses on “Crystallographic Directions and Planes”. 1. Which of the following is not true for crystallographic axes? a) They must be parallel to the edges of the unit cell b) They must be perpendicular to each other c) They must originate at one of … Read more
