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Zinc oxide, white in colour at room temp...

Zinc oxide, white in colour at room temperature, acquires yellow colour on heating due to:

A

Zn being a transition element

B

paramagnetic nature of the compound

C

trapping of electrons at the site vacated by Oxide ions

D

Both A and B

Text Solution

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The correct Answer is:
C
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RESONANCE ENGLISH-SOLID STATE-Exercise -2 (Part-I)
  1. Which of the following are not correctly matched with the bonds found ...

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  2. Which of the following is not correct for ionic solids ?

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  3. An element with atomic mass 100 has a bcc structure and edge length 40...

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  4. What is the nearest distance between two different layers in ABAB arra...

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  5. In a face centered lattice of X and Y, X atoms are present at the corn...

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  6. You are given 6 identical balls . The maximum number of square voids a...

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  7. In a simple cubic lattice of anions, the side length of the unit cell ...

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  8. In a multi layered close-packed structure

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  9. In a compound,oxide ions are arranged in cubic close packing arrangeme...

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  10. Platinum crystallize in a face-centred cubic crystal with a unite cell...

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  11. Platinum crystallises in a face centered cube crystal with a unit cell...

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  12. Gold has a face centered cubic lattice with an edge length of the unit...

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  13. Which of the following statements is correct in the rock-salt structur...

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  14. The compound AB crystallizes in a cubic lattice in which both A and B ...

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  15. BaO has a rock-salt type structure. When subjected to high pressure, t...

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  16. A crystal of NaCl, which has sodium ions and chloride ions missing fro...

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  17. In a Schottky defect

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  18. NaCl shows Schottku defects and AgCl Frenkel defects. The electrical c...

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  19. Zinc oxide, white in colour at room temperature, acquires yellow colou...

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