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प्रश्न
Give a reason why water droplets appear on the outer surface of a tumbler containing ice.
उत्तर
Water vapour present in air, condenses on the cooler surface of the tumbler. Hence they condenses into tiny water droplets.
संबंधित प्रश्न
A fuel when used releases least amount of pollutants in the air.
Name and briefly explain four ways by which pollution of air caused by humans is minimised.
Complete and balance the following equation
CaO + H2O →
Fill in the blank
Aquatic plants and animals use _________ in water.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
Photosynthesis is a process by which green plants prepare their own food in the presence of sunlight and chlorophyll.
The main component of air is oxygen.
Give the components present in the air with a percentage?
______ exists in nature as silicates, carbonates, oxides, and water. It also exists in a free state as part of the air in the atmosphere.
Metals like magnesium, iron, and sodium burn in oxygen and give basic ______.
State whether the following statement is true or false. If false, correct them.
Plants consume oxygen for respiration.
