GROUP 2 TOPIC : PROPERTIES AND CHARACTERISTICS OF MATERIALS QUIZ I. MULTIPLE CHOICES 1. It is the properties of a material which is related to its conductivity of heat. In other words, these are the properties that are exhibited by a material when the heat is passed through it. A. Physical Properties B. Chemical Properties C. Electrical Properties D. Thermal Properties 2. It is one of the thermal properties of a material wherein when heat is passed through a material, its shape changes. A. Heat Capacity B. Thermal Expansion C. Thermal Conductivity D. Thermal Stress 3. It is the stress experienced by a body due to either thermal expansion or contraction. It can be potentially destructive in nature as it can make the material explode. A. Heat Capacity B. Thermal Expansion C. Thermal Conductivity D. Thermal Stress 4. Properties of a material which determine ability of material to be suitable for a particular Electrical Engineering Application. A. Physical Properties B. Chemical Properties C. Electrical Properties D. Thermal Properties 5. It is the property of material which indicates the ability of material to withstand at high voltages. A. Dielectric Strength B. Conductivity C. Resistivity D. Thermoelectricity 6.. What optical property is associated with the immediate emission of visible or nearvisible radiation after absorbing energy? A. Reflectivity B. Absorptivity C. Luminescence D. Refractivity 7. In the context of optics, what property characterizes materials that do not allow the passage of electromagnetic light waves? A. Translucent B. Opaque C. Reflective D. Transparent 8.. When a material is heated, causing electrons to move to higher energy levels and release photons, what process is it undergoing? A. Thermal emission B. Photo conductivity C. Refraction D. Absorption 9. What is the key factor that distinguishes ferromagnetic materials from paramagnetic materials in terms of their magnetic behavior? A. Permanent magnetic moment B. Arrangement of dipoles in domains C. Temperature dependence D. Weak magnetization 10. What is the defining characteristic of diamagnetic substances when placed in a magnetic field? A. Attraction towards the magnetic field B. Enhancement of magnetic field C. Alignment of magnetic dipoles with the applied field D.. Repulsion by magnets II. ENUMERATION 1. It is the mass of a material per unit volume. Densitiy 2. The visual appearance of a material based on the wavelengths of light it reflects. Color 3. The resistance of a material to deformation or scratching. Hardness 4. The ability of a material to deform under pressure without breaking. Malleability 5. The ability of a material to stretch without breaking. Ductility 6. The ability of a material to bear a certain force without breaking or bending. Strength 7. The ability of Material to shatter or fracture without undergoing significant deformation. Brittleness 8. It shows how resistant a material is to chemical processes that cause corrosion or breakdown Corrosion Resistance 9. It shows the chances that a material will interact chemically with other substances. Reactivity 10. Speaks about a material's capacity to hold onto its chemical makeup in a variety of surroundings Chemical Stability