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Why phosphorus as an impurity increases ...

Why phosphorus as an impurity increases conductivity of silicone?

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What is an impurity defect?

ZnO crystals on heating acquires the formuls Zn_(1+x)O . Or There is an increase in conductivity when silicon doped with phosphorus. Give reason.

Phosphorus is present in :

Give reasons Silicon doped with phosphorus, gives an n-type semiconductor, while p-type semiconductor is obtained when silicon is doped with gallium.

Phosphorus is a constituent of:

Why is phosphours doped silicon a semi-conductor?

The process of purification of silicon is -

Why is the electrical conductivity of phosphorus-doped silicon is more than that of pure silicon?

What will happen when a small amount of phosphorus is addded to pure crystal of silicon ?

UNITED BOOK HOUSE-SET-11-Exercise
  1. [NiCl4]^(2-) paramagnetic but [Ni(CO)4] diamagnetic though both are te...

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  2. Give an example of condensation polymerisation. State two monomers for...

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  3. Why phosphorus as an impurity increases conductivity of silicone?

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  4. Silver forms fcc lattice with edge length 409 pm calculate density of ...

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  5. Why CaCl2 is used to melt the ice deposited on road?

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  6. The cell used in watch has the following cell reaction. Calculate E^@ ...

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  7. State Kohlrausch law of independent migration of ion.

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  8. 0.0024 (M) Acetic acid solution has specific conductance 7.896xx10^-5 ...

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  9. What is the role of stabilizer and depressant in froth flotation proce...

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  10. Which element of lanthanoid shows +4 oxidation state?

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  11. Why Ag is considered to be a transitional element though it has d^10 g...

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  12. Complete the reaction : MnO4 + C2O4^(2-) + H^+ rarr

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  13. Why Gadolinium (Z=64 and Lutetium (Z=71) shows +3 oxidation state?

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  14. State with chemical equation when pH is excessively reduced for aqueou...

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  15. Why 2% enthanol is mixed in preservation of chloroform?

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  16. Identify A rarr D CH3Br + Mg overset(Dry)underset(ether) rarr A overse...

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  17. Identify A to D

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  18. Why orthomethoxy phenol has less acidic nature than nitrophenol?

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  19. What will happen when C6H5overset(oplus)N2overset(Theta)Cl as added to...

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  20. How would you carry out the following conversion Propene rarr Propan-1...

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