Question

Which of the following phenomenon takes place when the arrangement of the crystal is not random?

(a) The temperature increases

(b) The temperature decreases

(c) Preferred orientation exits

(d) Preferred orientation enters

I had been asked this question by my school principal while I was bunking the class.

My doubt stems from Modern X-Ray Powder Techniques and their Applications in division X-Ray Diffraction of Solid State Chemistry

Answer 1

Right answer is (c) Preferred orientation exits

The explanation is: If the crystal arrangement is not random, then preferred orientation exists and can introduce errors, sometimes very large, into the measured intensities preferred orientation is a serious problem for the materials that crystallize in a characteristic, very non-spherical shape like clay minerals, etc.