The coordination number of each sphere in hcp arrangement is
12
8
6
4
Correct Answer :
A. 12
Related Questions
The vapour density of ozone would be
72
8
48
24
Gases deviate from the ideal behaviour because their molecules
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From the Dulong and Petit's law atomic weight is given by which one of the following relations?
6.41 sp. heat
6.4/sp. heat
sp. heat/6.4
sp. heat/6.4 x 2
In a close packed arrangement of N spheres, the number of octahedral holes are
N
2N
4N
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radii of the ions are small
charge on the ions are small
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A chalk box exhibits
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monoclinic geometry
orthorhombic geometry
tetragonal
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2.24 litres
22.4 litres
11.2 litres
How many nearest neighbours are there in an atom or ion in an octahedral hole of a close packed structure?
4
6
8
18
22.4 litres of at 27.3°C and 1 atmosphere pressure shall weigh
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16 g
44.8 g
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A balloon filled with ethane is pricked up with sharp point and quickly plunged into a tank of hydrogen at the same pressure. After some time balloon will
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6 and 6
4 and 4
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The weight of 22.4 litres of any gas at N.T.P. represent its
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gm molecular weight
gm equivalent weight
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Normal boiling points values are for , - 34C, bromine 58°C, carbon tetrachloride 77°C and oxygen - 183°C. Which of these liquids has the highest vapour pressure at room temperature?
,
A vessel containing 10 litre of air at atmospheric pressure is connected to an evacuated 9 litre vessel The resulting pressure will be
2 atm
31 atm
0.526 atm
52.6 atm
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at high temperature and high pressure
at high temperature and low pressure
at low temperature and high pressure
The vol. of 20 gms of nitrogen at N.T.P.
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distillation
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filtration
An element has atomic weight 24 and equivalent weight 11.9. Its valency is
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2
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2:1:2:3
3:2:2:1
At what temperature, the root mean square velocity of oxygen molecules is equal to that of at 27°C?
150°C
150°K
27°C
None of these
Molecular formula of D in the above case is
AB
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The electrical conductivity of metals is of the order of