Tag: elastic and plastic substances

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Questions Related to elastic and plastic substances

Multiple choice chemistry substances in the surroundings - their states and properties elastic behaviour of solids elastic and plastic substances properties of substances

Pick up the correct statement:

  1. Cubic crystals exhibit isotropic nature with respect to therma expansion

  2. Anisotropic solids expand in one direction and contract in perpendicular direction

  3. Many of the crystals are anisotropic solids

  4. Rock salt crystal exhibits isotropic nature with respect to thermal expansion
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Crystals are typically anisotropic, meaning their physical properties (like thermal expansion) vary depending on the direction of measurement. Many crystals exhibit this property.

Multiple choice physics properties of material substances elastic behaviour of solids elastic and plastic substances properties of substances

The materials, which do not show a fixed trend of deformation vs. applied force, are called:

  1. inelastic materials

  2. plastic materials

  3. elastic materials

  4. rigid materials
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Elastic materials are those that follow the Hooke's law, which is that the deformation produced in a material is directly proportional to the stress applied to it, and the material is recoverable after the deformation force is removed.

Inelastic materials are those that do not follow this relationship. They do not show a fixed trend of deformation vs applied force; in fact, they might not deform at all (rigid materials) or the deformation observed is not completely recoverable.