1. What is a mixture of Potassium Nitrate Powdered Charcoal and Sulphur called?

A. Paint
B. Glass
C. Gun Powder
D. Cement

2. Diameter of an atom is in the order of________________?

A. 0.2m
B. 0.2mm
C. 0.2nm
D. 0.2pm

3. The soul of chemistry is dealing with___________?

A. Internal structural changes in matter
B. Composition of matter
C. Properties of matter
D. Composition and properties of matter

4. The radioactive isotope of hydrogen is called___________?

A. tritium
B. deuterium
C. protium
D. ortho-hydrogen

5. Electron was discovered by?

A. Michael Faraday
B. James Maxwell
C. Yuri Gagarin
D. J.J Thomson

6. Sodium carbonate is produced by____________?

A. haber process
B. Amonia solvay process
C. decons process
D. lead chamber process

7. Which of the following is a substance?

A. Sea water
B. Brass
C. Tape water
D. Graphite
E. Sand

8. Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________?

A. ionic substances
B. metallic substances
C. molecular solids
D. covalent network solids

9. All of the following substances are crystalline except_____________?

A. Ice
B. Diamond
C. Sucrose
D. Plastic

10. Covalent network crystals have_____________?

A. higher melting point then molecular crystals
B. lower melting point then molecular crystals
C. discrete molecules linked by Van der waals forces
D. hydrogen bonding

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