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Which of the following is not the form o...

Which of the following is not the form of silica? cassiterite, cristobalite, Tridymite, quartz

A

cassiterite

B

cristobalite

C

Tridymite

D

quartz

Text Solution

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The correct Answer is:
A
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V PUBLICATION-THE p - BLOCK ELEMENTS-QUESTION BANK
  1. Carborundum is

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  2. The high temperature polymers of silicon are called silicates silicon...

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  3. Which of the following is not the form of silica? cassiterite, cri...

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  4. The element having maximum abundance in earths crust is

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  5. Hybridisation of boron in B2H6 is -----

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  6. Boric acid is polymeric due to -----

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  7. The Elements of group 14 show ----- oxidation states

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  8. Boron is a : metal, non-metal, metalloid, alloy

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  9. Explain the action of heat on boric acid.

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  10. The compounds of boron with hydrogen are called : borides, boranes, di...

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  11. Orthoboric acid on strong heating to red hot gives. metaboric acid bo...

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  12. Glass is best described as a,: solid, liquid, supercooled liquid, ...

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  13. The aqueous solution of borax is

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  14. The allotropic form of carbon which is used for making lead of pencil...

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  15. The gas which combines with haemoglobin to damage is oxygen- carrying ...

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  16. The carbide which is used as abrasive is, (1)WC (2)CaC2 (3)Al4 C3 (...

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  17. Pyrosilicates are the silicates in which two tetrahedral units are lin...

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  18. A l^(3+)' is not isoelectronic with (1)Ne (2)Na^+ (3)F^- (4)Ca^2+

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  19. Which one of the following elements has the highest melting point? (1)...

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  20. Orthoboric acid, H3BO3 is a

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