| 1 |
The subatomic particles of an atom are. |
- A. Proton
- B. Electron
- C. Neutron
- D. All of these
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| 2 |
Which one of the following is a non metallic element. |
- A. Oxygen
- B. Aluminium
- C. Iron
- D. Beryllium
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| 3 |
Which of the following gas is used by plants for making food. |
- A. Hydrogen
- B. Oxygen
- C. Nitrogen
- D. Carbon dioxide
|
| 4 |
C6H12O6is he formula of glucose. How many oxygen are there in one molecule of glucose. |
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| 5 |
How many hydrgen atos are present in 1 molecule of ammonia. |
|
| 6 |
The number of proton present in atom is called. |
- A. Atomic number
- B. Atomic mass
- C. Atomic weight
- D. Mass
|
| 7 |
Which one of the following is an element. |
- A. O3
- B. CO2
- C. CH4
- D. H2O
|
| 8 |
The symbol of Lithum is. |
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| 9 |
Which one of the following is metallic element. |
- A. Hydrogen
- B. Helium
- C. Lithium
- D. Carbon
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| 10 |
Matter exist in |
- A. Solid
- B. Liquid
- C. gas
- D. All of these
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