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- Oxygen
- Carbon
- Hydrogen
- Nitrogen(correct)
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__________ are called the powerhouses of the cell?
__________ are called the powerhouses of the cell?
A. Mitochondria
B. Vesicles
C. Lungs
D.Liver
In night, when photosynthesis is stopped, plants__________?
In night, when photosynthesis is stopped, plants__________?
A. take in Carbon Dioxide
B. give off Oxygen
C. give off Carbon Dioxide
D. None of these
The device used to convert Alternate Current into Direct Current is called?
The device used to convert Alternate Current into Direct Current is called?
A. Anemometer
B. Battery
C. Galvanometer
D. Rectifier
The fourth state of matter is?
The fourth state of matter is?
A. Water
B. Salts
C. Vapours
D. Plasma
About 50% of the Earth’s crust, including the waters on the Earth and atmosphere, is?
About 50% of the Earth’s crust, including the waters on the Earth and atmosphere, is?
A. Oxygen
B. Cabon Dioxide
C. Silicon
D. Clay
Acid rain is mainly caused by emissions of __________ in the atmosphere?
Acid rain is mainly caused by emissions of __________ in the atmosphere?
A. Sulfur Dioxide and Potassium Nitrate
B. Sulfur and Charcoal
C. Nitrogen Oxide and Potassium Nitrate
D. Sulfur Dioxide and Nitrogen Oxide
In general, wind speed of 10 –13 kph caused_______?
In general, wind speed of 10 –13 kph caused_______?
A. minor or no damage
B. considerable damage
C. severe damage
D. extreme damage
Water covers __________ of the Earth’s surface?
Water covers __________ of the Earth’s surface?
A. 61%
B. 67%
C. 71%
D. 76%
Who is considered the founder of meteorology?
Who is considered the founder of meteorology?
A. Aristotle
B. Plato
C. Einstein
D. Newton