GK
BASIC GENERAL KNOWLEDGE
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Oxygen
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Ammonia
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Hydrogen
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Carbon Dioxide
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Detailed explanation-1: -Carbon dioxide is used in the preparation of aerated waters like soda waters, lemonade etc. When CO2 is dissolved in water it combines with a water molecule to form carbonic acid. As long as this drink is under pressure, the carbon dioxide stays dissolved.
Detailed explanation-2: -The fizziness, or carbonation, of the soda, is what makes the experience complete. Without the bubbling-carbonation, you have nothing more than flat, syrupy drinks. That’s where carbon dioxide comes in. CO2 is an invisible gas that is added to soft drinks to produce the proper level of fizz for your enjoyment.
Detailed explanation-3: -Modern carbonated water is made by injecting pressurized carbon dioxide into water. The pressure increases the solubility and allows more carbon dioxide to dissolve than would be possible under standard atmospheric pressure.