ECAT Physics Chapter 17 Physics of Solids Online Test With Answers

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ECAT Physics Chapter 17 Physics of Solids Online Test

Sr. # Questions Answers Choice
1 An ordinary glass gradually softens into a 'paste -like' state before it becomes a very viscous liquid. It happens almost at: 800<sup>o</sup>C 500<sup>o</sup>C 300<sup>o</sup>C 100<sup>o</sup>C None of these
2 In a cubic crystal, All solids meet at: 60<sup>o</sup> 90<sup>o</sup> 109<sup>o</sup> 30<sup>o</sup> 10<sup>o</sup>
3 The pattern of crystalline solid is: One dimesional Two dimensional Three dimensional None of these Either (A) or (B)
4 Amorphous solids: Have definite melting points Are called glassy solids Have no definite melting point Both (B) and (C) Both (A) and (C)
5 The word amorphous means: Without any structure With definite structure Regular arrangement of molecules Both (B) and (C) None of these
6 The force which maintain the strict long-range order between atoms of a crystalline solid is the: Nuclear force Cohesive force Adhesive force Coulomb force None of these
7 The transition from solid state to liquid state is: Abrupt Slow Continous Discontinous Both (A) and (D)
8 The transition from solid to liquid is actually from: Order to disorder Disorder to order Order to order Disorder to disorder None of these
9 Each atom in a metal crystal vibrates about a fixed point with an amplitude that: Decrease the rise in temprature Is not affected by rise in temprature Increase with rise in temprature Both (B) and (C) None of these
10 Zirconia is classified as: Ceramic solid Ionic compound Metal Either (A) or (B) Either (B) or (C)
11 The solids are classified as: Metals Crystalline Amorphous Polymeric All except (A)
12 Crystalline solids are in the form of: Metals Ionic Compounds Ceramics Both (A) and (B) All of these
13 In the phenomenon of hysteresis magnetism leads the magnetising current magnetism lags behind the magnetising current meganetism goes along the magnetising current none of them
14 The curie temperature of iron is about 250<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span> 500<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span> 750<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span> 1000<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span>
15 Above the curie temperature, iron becomes ferromagnetic paramagnetic diamagnetic any one of them
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