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Which of the following statement(s) is/a...

Which of the following statement(s) is/are true ? 

A

Conductivity of semiconductors increaseswith increase in temperature

B

Pure ionic solids are insulators

C

`NaCl` is a diamagnetic substance

D

`TiO_(2)` is a paramagnetic substance

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
Conductivity of semiconductors increases with increase in temperature because more electrons can jump the conduction bond. Pure ionic solids are Insulators. `NaCl,H_(2)O,C_(6)H_(6)` are diamagnetic.
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AAKASH SERIES-SOLID STATE-PRACTICE SHEET - 3
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  2. Which of the following statement(s) is/are correct?

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  3. Which of the following is/are ferromagnetic substance ?

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  4. The yellow colour of ZnO and conducting nature produced on heating is ...

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  5. Which of the following statement(s) is/are true ?

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  6. Which of the following  is/are correct ?

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  7. Ionic lattice has two major point defects, (1) Schottky (2) Frenkel de...

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  8. Ionic lattice has two major point defects, (1) Schottky (2) Frenkel de...

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  9. Ionic lattice has two major point defects, (1) Schottky (2) Frenkel de...

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  10. Read the following passage and answer the questions at the end of it. ...

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  11. Read the following passage and answer the questions at the end of it. ...

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  12. Read the following passage and answer the questions at the end of it. ...

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  13. Match the following : {:("COLUMN - I","COLUMN - II"),("A) Quartz","p...

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  14. {:("COLUMN - I","COLUMN - II"),("A) Pizoelectric","p) Electric dipoles...

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  15. The density of Ionic solid B^(+)A^(-) (Crystallises in rock salt type)...

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  16. A molecule A(2)B (mol. wt 166.4) occupies triclinic lattice with a a=5...

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  17. Analysis shows that nickel oxide has formula Ni(0.98)O(1.00), the % of...

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  18. The density of Cr atoms is 7.2 g/cm. If the unit cell has edge length ...

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  19. The density of KBr is 2.73 g/cm. The length of the unit cell is 654 pm...

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  20. Find the co-ordination number of sodium in Na(2)O.

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