Advertisements
Advertisements
प्रश्न
Fill in the blank
Polluted air is harmful to ____.
Advertisements
उत्तर
Polluted air is harmful to health.
APPEARS IN
संबंधित प्रश्न
How is greenhouse effect produced?
Name two air pollutants which affect our health.
What is meant by ozone depletion?
Tick (√) the correct alternative from the choice given for the following statement.
The substance which accelerates the speed of a reaction without itself undergoing any change is called
The capacity of air to hold moisture depends upon the ______ of the air.
While freezing, the ______ of water is lowered.
State the meaning of the term atmosphere.
Fill in the blank:
A candle burns in a jar of oxygen, but gets extinguished in ______
The process of conversion of iron into hydrated form of oxides is called _______.
Paheli kept some water in a beaker for heating. She observed that tiny bubbles appeared before the water started to boil. She boiled the water for about 5 minutes and filled it in a bottle up to the brim and kept the bottle air tight till it cooled down to room temperature.
Do you think tiny bubbles will appear on heating the water taken out from the bottle? Justify your answer.
