Question

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. 

(1) (A), (B), (E) only 

(2) (B), (D) only 

(3) (C), (D) only 

(4) (A), (C), (D) only

Answer 1

Answer is (4) (A), (C), (D) only

(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.