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JEE Main 202127 JulyEvening Shift
Exam
JEE Main
Year
2021
Date
27 July
Shift
Evening Shift
Subject
Chemistry
Chapter
Solid State

JEE Main 2021 · 27 July · Evening Shift · Chemistry · Solid State

Select the correct statements. (A) Crystalline solids have long...

Select the correct statements.
(A) Crystalline solids have long range order.
(B) Crystalline solids are isotropic.
(C) Amorphous solid are sometimes called pseudo solids.
(D) Amorphous solids soften over a range of
temperatures.
(E) Amorphous solids have a definite heat of fusion. Choose the most appropriate answer from the options given below.

Options

  1. A(A),\left(A\right),\left(B\right), (E)only\left(E\right)\text{only}
  2. B(B),(D)( B ) , ( D ) only
  3. C(C),(D)( C ) , ( D ) only
  4. D(A),(C),(D)( A ) , ( C ) , ( D ) only

Correct answer

D. (A),(C),(D)( A ) , ( C ) , ( D ) only

Step-by-step solution

(A) Crystalline solids have definite arrangement of constituent particles and have long range order.
(C), (D) Different constituent particles of an amorphous solid have different bond strengths and soften over a range of temperatures.
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