Question

In an experiment to check the amount of carbon dioxide, atmospheric air and exhaled air is passed through lime water. Which of the following turns lime water milky?

• A. Exhaled air
• B. Atmospheric air
• C. Both exhaled air and atmospheric air
• D. None of the above

Answer 1

Answer: (C)

Both exhaled air and atmospheric air

According to the experiment when the carbon dioxide passes through lime water it turns the water cloudy. Both atmospheric air in which it is present naturally and air that is come out from lungs contains some amount of carbon dioxide as cells break down molecules like fat, carbohydrates etc to capture energy from them.

So the correct option is 'Both exhaled air and atmospheric air'.