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If the unit cell of a mineral has cubic ...

If the unit cell of a mineral has cubic close packed (ccp) array of oxygen atoms with m fraction of octahedral holes occupied by aluminium ions and n fraction of tetrahedral holes occupied by magnesiums ions, m and n respectively, are

A

`1/2,1/8`

B

`1,1/4`

C

`1/2,1/2`

D

`1/4,1/8`

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KVPY PREVIOUS YEAR-MOCK TEST 2-EXERCISE
  1. The major product of the following reaction is

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  2. One mole of N(2)O(4)(g) at 300 K is kept in a closed container under o...

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  3. Anhydrous AlCl3 cannot be obtained from which of the following reactio...

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  4. Copper crystallises in fcc latticewith a unit cell edge of 361 pm. The...

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  5. When a gas is bubbled through water at 298 K, a very dilute solution o...

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  6. A small particle of mass m moves in such a way that P.E=-1/2mkr^2, whe...

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  7. For the reaction C(s) +CO(2)(g) rarr 2CO(g), k(p)=63 atm at 100 K. If ...

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  8. The number of possibel enantiomeric paira that can be produced during ...

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  9. The pair of structures given below represent

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  10. Sn^(4+)+2e^(-)rarrSn^(2+) E^@=0.13 V Br2+2e^(-)rarr2Br^(-) E^@=1.08 V ...

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  11. The electronegativity of four atoms labeled as D,E,F and G are as foll...

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  12. A decimolar solution of pottassium ferrocyanide is 50% dissociated at ...

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  13. The number of moles of KMnO(4) that will be needed to react completely...

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  14. If the unit cell of a mineral has cubic close packed (ccp) array of ox...

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  15. 100 mL of tap water containing Ca(HCO3)2 was titrated with N/50 HCl wi...

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  16. On treatment of 100 mL of 0.1 M solution of COCl(3).6H(2)O with excess...

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  17. Consider the following compounds : (i) IF(5) " " (ii) ClI(4)^(-) "...

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  18. Which one is the correct combination for the given the sets of the com...

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  19. The sodium salt of a carboxylic acid (A) was produced by passing a gas...

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  20. The following reaction is performed at 298 K ? 2NO(g)+O(2)(g)hArr2NO...

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