PDF chapter test TRY NOW
Read the statement and select the correct answer:
A)
Diana placed a lighted candle along with a small plant on a plate covered with a transparent lid. She kept the whole set up in an open space. Diana thought that the candle would get blown and the plant will die after some time. But to her surprise, the plant survived and the candle glowed because of the
Statement 1: Nitrogen present in the air inside, which enhanced the growth of the plant.
Statement 2: Carbon-di-oxide gas which made the candle glow.
Statement 1: Nitrogen present in the air inside, which enhanced the growth of the plant.
Statement 2: Carbon-di-oxide gas which made the candle glow.
B)
Diana was on her way to Shimla for vacation with her grandparents. Her grandmother had difficulty in breathing as they were ascending the mountain. This is because the
Statement 1: Air density was less due to the increase in altitude.
Statement 2: Air density was more due to the increase in altitude.
Statement 1: Air density was less due to the increase in altitude.
Statement 2: Air density was more due to the increase in altitude.
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