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Which of the following is a semi conduct...

Which of the following is a semi conductor ? 

A

C

B

Si

C

Ge

D

both Si and Ge

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-ELEMENTS OF CARBON FAMILY-PRACTICE EXERCISE
  1. Which of the following is a semi conductor ?

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  2. Which has the highest melting point ?

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  3. Which of the following is a reducing agent and undergoes hydrolysis ?

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  4. The hybridisation of silicon in SiF(6)^(2-) is

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  5. The element of IVA group that has no catenation ability

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  6. All atoms are spa hybridised in the following substance

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  7. The allotrope of Carbon not used in the making of electrodes is

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  8. Synthesis gas is a mixture of

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  9. CO can be used as a fuel but not CO(2) because

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  10. Silica has the following structure

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  11. {:("LIST-I","LIST - II"),("A) Diamond ","1) Metal electrode "),("B) Gr...

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  12. Silicon is ignited in highly electro-negative element to give a tetrah...

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  13. Silica is high melting solid, because

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  14. The oxide which exists as solid at room temperature is

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  15. Hybridisation of Carbon atoms in CO and CO(2) are respectively

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  16. Which of the following shows bonds in silicones?

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  17. The number of ........ membered rings 20 and ... membered rings 12 are...

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  18. 2R-Cl+Sioverset(Cu//300^(@)C)rarr

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  19. A and B are the compounds of carbon. A on passing over red hot coke is...

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  20. [SiF(6)]^(2-) is known where as [SiCI(6)]^(2-) does not exist because ...

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