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Which is true about Piezoelectric crysta...

Which is true about Piezoelectric crystals ?

A

They produce an electric current on heating

B

They produce an electric current when a mechanical stress is applied

C

They are insulators

D

They are magnetic in nature

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-THE SOLID STATE -Assignment (SECTION - A) (OBJECTIVE TYPE QUESTION)
  1. The C - C and Si - C interatomic distances are 154 pm and 188 pm. The ...

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  2. What is the coordination number of Rb^(+) in RbBr unit cell if ionic r...

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  3. A crystalline solid AB has NaCl type structure with radius of B^(-) io...

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  4. Number of formula units in unit cell of MgO (rock salt), ZnS (zinc ble...

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  5. An element crystallises in a b.c.c. lattice. Nearest and next nearest ...

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  6. The total number of elements of symmetry in a cubic crystal is

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  7. A crystal may have one or more planes and one or more axes of symmetry...

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  8. Which of the following statement is correct ?

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  9. Pyroelectric crystals feeble electric current

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  10. Why does white zinc oxide on heating become yellow ?

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  11. F - centres in an ionic crystals are

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  12. When an element of group 14 is doped with an element of group 15

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  13. Antiferromagnetic property is given as

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  14. Substances which are magnetic but having less magnetic moment than the...

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  15. In antiferromagnetism

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  16. Which is true about Piezoelectric crystals ?

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  17. When a crystal having rock salt type geometry is heated in the presenc...

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  18. The mass percentage of Fe^(3+) ion present in Fe(0.93), O(1.00) is

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  19. If NaCl is dped with 10^(-3) mol % of SrCl(2). What is the concentrati...

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  20. Which of the following is incorrect statement about the Bragg's equati...

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