Virtual Labs

Tools

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Determination of Crystal Structure using powder X-Ray Diffraction

Choose difficulty:

Beginner

Intermediate

Advanced

1. What is the primary purpose of using a monochromator in XRD experiments:

a: To increase the intensity of X-rays Explanation

Explanation

b: To filter out unwanted wavelengths and obtain monochromatic X-rays Explanation

Explanation

c: To decrease the diffraction angle Explanation

Explanation

d: To enhance fluorescence signals Explanation

Explanation

2. The crystal structure of Iron (Fe) at room temperature is?

a: BCC Explanation

Explanation

b: FCC Explanation

Explanation

c: HCP Explanation

Explanation

d: None of these Explanation

Explanation

3. Reflections allowed for BCC crystal are?

a: for even values of (h + k + l) Explanation

Explanation

b: for all values of h²+k²+l² Explanation

Explanation

c: when h, k and l are all even or all odd Explanation

Explanation

d: None of these Explanation

Explanation

4. The crystal structure which has lattice parameters a = b ≠ c and angles α = β = γ?

a: Triclinic Explanation

Explanation

b: Monoclinic Explanation

Explanation

c: Tetragonal Explanation

Explanation

d: Cubic Explanation

Explanation

5. In an XRD pattern, what do the peaks correspond to?

a: The intensity of X-rays Explanation

Explanation

b: The atomic mass of elements Explanation

Explanation

c: The specific crystal planes within the material Explanation

Explanation

d: The colour of the material Explanation

Explanation

Community Links Sakshat Portal Outreach Portal FAQ: Virtual Labs

AGPL 3.0 & Creative Commons (CC BY-NC-SA 4.0)