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- 1. Multiple Choice
What is atomic number?
Number of proton
Number of electron
Number of neutron
Number of proton and electron
- 2. Multiple Choice
The most abundant element occurring in the oceans is :
Hydrogen
Oxygen
Nitrogen
Silicon
- 3. Multiple Choice
Industrial Chemistry deals with the manufacturing of compounds
In the laboratory
On microscale
on commercial scale
On economic scale
- 4. Multiple Choice
Which of the following element is found in most abundance in the Earth's crust?
Oxygen
Aluminum
Silicon
Iron
- 5. Multiple Choice
Which of the following substances can be separated into by physical means?
Element
Mixture
Compound
Radical
- 6. Multiple Choice
Number of protons in the nucleus of an atom is called:
Mass number
Atomic number
Mass unit
Electron number
- 7. Multiple Choice
Which one is a physical property?
Smell
Taste
Hardness
All of the above
- 8. Multiple Choice
Nuclear Chemistry has application in ?
Medical treatment
Ecology
Metallurgy
agriculture
- 9. Multiple Choice
Elements may be:
solids
Liquids
Gas
All of the above
- 10. Multiple Choice
Example of heterogenous mixture is:
Air
Gasoline
Ice cream
Soil
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