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Science (Oxygen Gas)

Author: ibrahim howaida
Description:
Keywords: , , , , , , online teaching

Content:
Quiz:

1. The percentage of oxygen gas is #
A) 21%25

2. We use hydrogen peroxide and # to prepare oxygen at lab.
A) Manganese,dioxide

3. ..............................................................................................................................................................................................................................................

4. Oxygen is colorless, odourless and tatless.
A) TRUE
B) FALSE

5. It burns and help in burning.
A) TRUE
B) FALSE

6. It is lighter than air.
A) TRUE
B) FALSE

7. Hardly dissolve in water.
A) TRUE
B) FALSE

8. ................................................................................................................................................................................................................................................

9. Oxygen units with iron gives ..............
A) Iron
B) Iron oxide
C) Aluminum
D) Alumiunm oxide

10. Oxidation process means ....................
A) Slow process
B) Oxygen units with elements forming elements oxides
C) By burning
D) In the precence of water or water vapor

11. Burning/ Combustion process means....................
A) Rapid process
B) Oxygen units with elements forming element oxides
C) In the precense of water and water vcapor
D) By heating
.