Advertisements
Advertisements
प्रश्न
What is not true about air?
पर्याय
It makes the windmill rotate.
It helps in the movements of aeroplanes.
Birds can fly due to presence of air.
It has no role in water cycle.
उत्तर
It has no role in water cycle.
Explanation:
During the process of evaporation, the vapours of water are risen up by air to form clouds.
APPEARS IN
संबंधित प्रश्न
Suggest five measures to prevent air pollution.
Fill in the blanks :
_______ and ______ are the most common air pollutants.
Tick (√ ) the most appropriate answer.
Magnesium burns with a dazzling white flame to form magnesium oxide, a powdery mass. The colour of magnesium oxide is :
Give word equation for the following conversion:
Nitrogen of the air to nitric oxide
State four different properties of a compound and a mixture.
Which of the following is true about oxygen?
Nitrogen is _______ than air.
Which gas is essential for burning?
Make sentences using the given set of words.
99%, oxygen, nitrogen, and air, together
Garima observed that when she left her tightly capped bottle full of water in the open sunlight, tiny bubbles were formed all around inside the bottle. Help Garima to know why it so happened?