| 1 |
Valency of nitrogen is |
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| 2 |
Large number of sotmata are found on.... side of leaf. |
- A. Lower
- B. Upper
- C. Middle
- D. None of these
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| 3 |
The particle of an atom having negative charge on it. |
- A. Electron
- B. Proton
- C. Neutron
- D. Nucleus
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| 4 |
The mineral which help pant in production of Carbohydrates and fat is. |
- A. Nitrogen
- B. Magnesium
- C. Oxygen
- D. Carbon
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| 5 |
Force is |
- A. A push
- B. a pull
- C. A friction
- D. All above
|
| 6 |
An empty steel container is sealed and heated, which of the following properties of the gas is likely to increase. |
- A. Mass
- B. Pressure
- C. Volume
- D. Density
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| 7 |
--------------- are fundamental particles of an atom. |
- A. Electron
- B. Proton
- C. Neutron
- D. All of these
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| 8 |
The degreee of hotness or coldness is called. |
- A. Thermal contrction
- B. Heat
- C. Thermal Expansion
- D. Temperature
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| 9 |
Silver+ hydrogen suolphide+Oxygen--------------- Silver sulphide + water The above reaction is known as. |
- A. Combustion
- B. Rusting
- C. Tarmishing
- D. Dehydration
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| 10 |
Area around nucleus where electrons are found are called. |
- A. Orbit
- B. Shell
- C. Both a and b
- D. None of these
|