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Among the seven crystal systems,how many...

Among the seven crystal systems,how many systems have body-centred unit cell as a possible variation?

A

3

B

4

C

5

D

6

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The regular three dimensional arrangement of points in a crystal is known as crystal lattice and the smallest repeating pattern in the lattice is called unit cell. The unit cells are characterised by the edge lengths a, b, c and the angles between them alpha, beta and gamma respectively. Based on this, there are seven crystal systems. In a cubic unit cell: a=b=c and alpha = beta=gamma=90^(@) The number of points in simple, body centred and face centred cubic cells are 1,2 and 4 respectively In both the hcp and ccp of spheres, the number of tetrahedral voids per sphere is two while the octahedral voids is one. In a face centred cubic cell, an atom at the face contributes to the unit cell

AAKASH INSTITUTE ENGLISH-TEST 1-EXAMPLE
  1. Which of the following is not an application of adsorption?

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  2. Select the incorrect statement among the following.

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  3. Among the seven crystal systems,how many systems have body-centred uni...

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  4. When temperature of a reaction is raised from 17°C to 27°C,the rate of...

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  5. Identify the process in which heterogeneous catalysis is involved

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  6. During the electrolysis of water,if 11.2 litre H2 is obtained at S.T.P...

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  7. On diluting aqueous solution of weak electrolyte to 100 times

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  8. Which among the following has the highest melting point?

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  9. Identify the correct naming for K2[PdCl4].

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  10. If DeltaG° value of fuel cell using C4H10 and O2 is -2.6×10^6J,then E°...

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  11. Select the incorrect statement among the following

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  12. The resistance and specific conductance of 0.1M solution of an electro...

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  13. Among the given properties of solution,how many are colligative proper...

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  14. The most alkaline hyroxide among the following is

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  15. Copper matte contains

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  16. Copper sol is most easily precipitated by

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  17. For the galvanic cell Mg(s)|Mg^(2+)(aq)||Zn^(2+)(aq)|Zn(s),the standar...

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  18. For the following redox reaction the coefficients of the reactants for...

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  19. Total number of monochloro derivatives obtained by monochlorination of...

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  20. Which is the counter ion in [Pd(NH3)4]^(2+)2Cl^–?

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