1. In __________ solids, the particles (atoms, molecules, or ions) are packed in a regularly ordered, repeating pattern
(A) Hard
(B) Crystalline
(C) Soft
(D) Amorphous
2. Viscometer is made up of
(A) Rubber
(B) Plastic
(C) Glass
(D) Metal
3. Surface tension is measured in
(A) Newton
(B) Dynes
(C) Dynes/cm
(D) Joule
4. Unit of viscosity is
(A) Poise
(B) Dynes/cm
(C) Newton
(D) gm/cm
5. State of matter which has definite shape and definite volume is called
(A) Solid
(B) Liquid
(C) Gas
(D) Plasma
6. NaCl forms __________ crystals
(A) Monoclinic
(B) Cubic
(C) Orthorhombic
(D) Tetragonal
7. KNO₃ forms __________ crystals
(A) Cubic
(B) Orthorhombic
(C) Monoclinic
(D) Tetragonal
8. Graphite forms __________ crystals
(A) Hexagonal
(B) Monoclinic
(C) Cubic
(D) Tetragonal
9. The atomic number of Silicon is
(A) 32
(B) 28
(C) 14
(D) 40
10. The atomic number of Germanium is
(A) 14
(B) 28
(C) 32
(D) 40
11. Silicon and Germanium each have __________ valence electrons
(A) 4
(B) 5
(C) 6
(D) 7
12. NH₄Br, MnO₂, SnO₂, Sn etc. are examples of
(A) Unit cell
(B) Cubic system
(C) Tetragonal system
(D) Orthorhombic system
13. Silicon atoms form __________ bonds and can crystallize into a regular lattice
(A) Hydrogen
(B) Ionic
(C) Metallic
(D) Covalent
14. The fifth state of matter is
(A) Liquid
(B) Solid
(C) Bose-Einstein condensate
(D) Plasma
15. __________ represent the substance in its purest form
(A) Solids
(B) Crystals
(C) Gases
(D) Liquids
16. There are __________ lattice systems
(A) 7
(B) 8
(C) 9
(D) 10
17. Mass per unit volume is called
(A) Viscosity
(B) Surface tension
(C) Density
(D) Capillary action
18. Specific gravity bottle is used for measurement of
(A) Density
(B) Surface tension
(C) Capillary action
(D) Viscosity
19. NaNO₃, KNO₃, Al₂O₃, Bi etc. are examples of
(A) Rhombohedral system
(B) Triclinic system
(C) Monoclinic system
(D) Hexagonal system
20. The resistance of a liquid to flow is
(A) Viscosity
(B) Surface tension
(C) Capillary action
(D) Density