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Ptest Chemistry: Time 2.5 Hrs CH# 06 Solids MCQ's 10 1

The document provides an overview of a chemistry exam covering the topic of solids. It includes 10 multiple choice questions testing knowledge of concepts like diffusion, ionic bonding, and allotropes. It also lists 10 short answer questions testing understanding of topics such as kinetic molecular theory of solids, compression and expansion of solids, crystalline and amorphous solids, isomorphism, transition temperatures, allotropes of sulfur, crystal lattice, unit cell, coordination number, close and open packing of solids, how radius ratio and conductivity affect ionic solids, lattice energy, differences between ionic and covalent crystals, properties of ice, and a comparison of metallic solids and molecular crystals.

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Moeed Sheikh
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83 views2 pages

Ptest Chemistry: Time 2.5 Hrs CH# 06 Solids MCQ's 10 1

The document provides an overview of a chemistry exam covering the topic of solids. It includes 10 multiple choice questions testing knowledge of concepts like diffusion, ionic bonding, and allotropes. It also lists 10 short answer questions testing understanding of topics such as kinetic molecular theory of solids, compression and expansion of solids, crystalline and amorphous solids, isomorphism, transition temperatures, allotropes of sulfur, crystal lattice, unit cell, coordination number, close and open packing of solids, how radius ratio and conductivity affect ionic solids, lattice energy, differences between ionic and covalent crystals, properties of ice, and a comparison of metallic solids and molecular crystals.

Uploaded by

Moeed Sheikh
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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PTEST CHEMISTRY

Time 2.5 hrs CH# 06 Solids

MCQs 10X1

1. Spontaneous mixing of particles is called________.

(a) Evaporation (b) Diffusion (c) Boiling (d)Sublimation

2. Ion acts as an electrical conductor due to_________.

(a) Electron cloud (b) Free protons (c) Free neutrons (d) Free ions

3. Electric current can pass through graphite n one direction but not through other direction of

crystal such a property is called_______.

(a) Allotropy (b) Anisotropy (c) Polymorphism (d) Isomorphism

4. The nature of bond in diamond is_________.

(a) Ionic (b) Covalent (c) Metallic (d) None of these

5. Lattice energy also called_______.

(a) Crystal energy (b) Ionization energy (c) Energy of affinity (d) Bond energy

6. _______ is hygroscopic salt.

(a) CaCl2 (b) NaCl (c) LiF (d) CaCO3

7. S8 is ______ crystalline molecule.

(a) Polar (b) Non Polar (c) Ionic (d) All of these

8. Coordination number of Na+ in NaCl crystal is_______

(a) 2 (b) 4 (c) 6 (d) 8

9. Ozone is _______ form of oxygen.

(a) Allotropic (b) Structural (c) Atomic (d) Liquid

10. Solids have geometry of _______ shapes.

(a) Distinctive (b) Definite (c) irregular (d) only (a)&(b)


Short answers questions. 10X3

1. Write postulates of kinetic molecular theory for solids.

2. Briefly explain compression and expansion of solids.

3. Differentiate between amorphous and crystalline solids also gives examples.

4. Briefly explain isomorphism with the help of example.

5. What is transition temperature explain with two examples.

6. Briefly explain allotropes of sulphur.

7. Define

(a) Crystal lattice

(b) Unit cell

(c) Co-ordination number

8. Explain close and open packing of solids.

9. How radius ratio and conductivity affect the shape of ionic solids.

10. Explain lattice energy with the help of examples.

11. Differentiate between ionic and covalent crystals.

12. Why low density and high heat of fusion of ice is useful?

13. Write comparison between metallic solids and molecular crystals.

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