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28.08.2022 20:31

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1. What are finishing materials? a) materials used for finishing the room; b) building materials for building construction; C) construction materials for the construction of structures; d) materials with high mechanical properties; 2. What property determines the ability of a material to lose moisture in its pores? a) moisture recovery; b) humidity; C) water absorption; d) water permeability. 3. What property determines the ability of the material to maintain strength when saturated with water? a) humidity; b) water permeability; C) water resistance; d) hygroscopicity. 4. mechanical properties include: a) density b) strength C) hardness d) humidity e) wear resistance e) corrosion resistance g) chemical activity h) frost resistance 5. the moisture Content of the material at a given time is a) humidity b) water permeability C) water resistance d) hygroscopicity 6. what groups are divided by the degree of fire resistance of materials? a) fireproof, difficult-to-burn and combustible; b) fire-resistant, non-fire-resistant; C) incombustible, incombustible; d) fireproof, difficult to burn. 7. What property determines the ability of a material under certain conditions and limits to perceive loads or other effects that cause internal stresses in it, without destruction? a) hardness; b) strength; C) the fragility of; d) plasticity. 8. chemical properties include: a) density b) strength C) hardness d) humidity e) wear resistance e) corrosion resistance g) chemical activity h) frost resistance 9. Hardness determine: a) on the hardness scale b) testing samples on presses C) testing samples on breaking machines d) on special devices using the Brinell method 10. physical properties include : a) density b) strength C) hardness d) humidity e) wear resistance e) corrosion resistance g) chemical activity h) frost resistance 11. frost Resistance is a property of the material a) in a water-saturated state, withstand repeated alternate freezing and thawing without significant signs of failure and loss of strength b) withstand repeated freezing and thawing in a dry state without significant damage and loss of strength C) withstand repeated freezing and thawing in a water-saturated state d) withstand repeated freezing and thawing to destruction 12. Destruction of material under the action of microorganisms-is it? a) biocorrosion; b) macroarray; C) microcorrosion; d) minicourse. 13. - this is the degree of filling the volume of the material with pores, the content of pores in the material. a) bulk density b) porosity C) water absorption d) volume 14. the ability of materials to resist the impact of friction forces on it? a) wear resistance b) porosity C) hardness d) corrosion 15. The ability of a material to absorb water vapor from the air is: a) hygroscopic; b) humidity; C) water absorption. 16. What properties characterize the ability of the material to react with various substances? a) mechanical; b) chemical; in the physical; d) technological. 17. What property determines the ability of a material to absorb when heated and give off a certain amount of heat when cooled? a) heat resistance; b) heat exchange; C) thermal conductivity; d) heat capacity. 18. What property determines the ability of the material to resist, without deforming, prolonged exposure to high temperatures? a) fire resistance; b) fire resistance; C) fire hazard; d) fire hazard. 19. What property determines the ability of materials to resist the penetration of other materials? a) fragility; b) strength; C) plasticity; d) hardness. 20. What property determines the ability of the material after deformation under the influence of any loads to take after removing their original shape and size? a) hardness; b) strength; C) the elasticity; d) plasticity. 21. The property of a material to conduct sound through its thickness? a) sound conductivity; b) strength; C) sound absorption; d) plasticity. 22. the property of materials to withstand without destruction the effects of high temperatures, flames and water in a fire? a) fire resistance; b) fire resistance; C) fire hazard; d) fire hazard 23. The property of the material to transmit through its thickness the heat flow resulting from the temperature difference on opposite surfaces? a) thermal conductivity; b) heat resistance; C) heat exchange; d) heat capacity. 24. The property of materials to resist the sound? a) the sound conductivity; b) strength; C) sound absorption; d) plasticity. 25. Destruction of solids, which is caused by chemical and electrochemical processes occurring in them when interacting with the environment? a) biocorrosion; b) corrosion; C) microcorrosion; d) minicourse