Please select a subject first
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Mention any two ways to control noise pollution.
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Metalloids are ______ at room temperature.
Concept: undefined >> undefined
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Tri oxygen molecule is known as ______.
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A gas that neither burns nor supports burning is ______.
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A ______ gas that is used to remove carbon impurities from the steel.
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Venus's atmosphere consists of roughly 96 – 97% of ______.
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Carbon dioxide gas is ______ in nature.
Concept: undefined >> undefined
______ gas is essential for the proper growth of all plants.
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______ exists in nature as silicates, carbonates, oxides, and water. It also exists in a free state as part of the air in the atmosphere.
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Metals like magnesium, iron, and sodium burn in oxygen and give basic ______.
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______ is used as a substitute for compressed air in tyres.
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Match the following
| 1. | Oxygen | a. | Carbon dioxide |
| 2. | Azote | b. | Nitrogen |
| 3. | Solvay process | c. | Vital life |
| 4. | Gun powder | d. | No life |
Concept: undefined >> undefined
Match the following
| 1. | Nitrogen | a. | Acid rain |
| 2. | CO2 | b. | Global warming |
| 3. | Melting of glaciers | c. | Volcanic gases |
| 4. | Corrosion of bridges | d. | Aerated drinks |
Concept: undefined >> undefined
Nitrogen is about two times more soluble in water than oxygen.
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Nitrogen is an essential element present in proteins and nucleic acids which are the building blocks of living things.
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The solid form of CO2 is called dry ice which undergoes condensation.
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Nitrogen gas is so cold that moisture in the air condenses on it, creating a dense fog.
Concept: undefined >> undefined
