Solids are incompressible dense mass substances. Solids are of two types- crystalline solids and amorphous solids. In the crystalline solids, the particles are arranged in a regular fixed pattern in the three dimensional space. This gives the solids a short range as well as the long range ordered constituent particles. In amorphous solids, there is no regular fixed pattern in the three dimensional space and this gives the solids only the short range order of constituent particles.
Download Class 12 Chemistry Worksheet on Chapter 1 Solid State Set 3 PDF
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CBSE Class 12 Chemistry Chapter 1 Solid State Worksheet – Set 3
Q-1:The empty space present in the CCP lattice is:
- 26%
- 30%
- 45%
- 90%
Q-2: Which among the following has no rotational symmetry?
- Cubic
- Triclinic
- Hexagonal
- Orthorhombic
Q-3: Why does the coordination number 12 not exist in ionic crystals?
Q-4: What will be the molecular mass of the metal nitrate if the bivalent metal involved has an equivalent mass of 32 g?
- 168
- 182
- 188
- 192
Q-5: Gold crystallises in FCC lattice structure. Calculate the number of unit cells that will be present in 1 g Gold.
Q-6: ____ has a Frenkel Defect.
- NaCl
- Graphite
- AgBr
- Diamond
Q-7: The radii of the ions A+ and B– are 88 pm and 200 pm respectively. Predict the coordination number of A+ in the close-packed crystal of the compound AB.
Q-8: Xenon crystallises in the FCC lattice having an edge length of the unit cell of 620 pm. Calculate the nearest neighbour distance and the radius of the xenon atom?
Q-9: What should be the amount of oxygen present to react with 27 g aluminium?
- 24 g
- 16 g
- 32 g
- 48 g
Q-10: What will be the concentration of cation vacancies if NaCl is doped with 10-3 mol% SrCl2?
Q-11: Why does Zinc oxide show enhanced electrical conductivity upon heating?
Q-12: Why does CaCl2 introduce the Schottky defect when it is added to AgCl crystal?
Q-13: Why are the defects in crystalline solids considered as thermodynamic defects?
Q-14: The value of the refractive index inside a solid is the same in all directions. Describe the nature of the solid. Also mention its cleavage property.
Q-15: How many atoms does a 100 g FCC lattice with the density 10 g cm-3 and cell edge 200 pm have?
- 5 x 1024
- 5 x 1025
- 6 x 1023
- 2 x 1025
Q-16: What is the radius of the sodium atom that crystallises in the body centred cubic lattice with the edge length of 4.29 Å?
Q-17: The percentage of iron, Fe(III) in Fe0.93O1.0 is ____.
- 17.7%
- 7.84%
- 11.5%
- 9.6%
Q-18: Calculate the ratio in between the spacings of the 100, 110, and 111 planes of the cubic crystal.
Q-19: Calculate the ratio of the densities of FCC and BCC structures of a metal that crystallises in both of these crystal systems. The edge length of the FCC unit cell is 3.5 Å and that of BCC unit cell is 3.0 Å.
Q-20: The sodium metal is soft; while, sodium chloride is hard. Explain.
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