What was the conclusion of Joseph Priestley's experiments with a burning candle and a plant in a closed space?

What was the conclusion of Joseph Priestley's experiments with a burning candle and a plant in a closed space?
  1. Breathing animals and burning candles remove oxygen from the air
  2. Breathing animals and burning candles damage the air
  3. Breathing animals and burning candles release carbon dioxide into the air
  4. Breathing animals and burning candles do not affect the air

Solution

Joseph Priestley performed a series of experiments that revealed the essential role of air in the growth of green plants. He observed that a candle burning in a closed space soon gets extinguished and concluded that breathing animals

Asked in: NCERT

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