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प्रश्न
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphurUioxide gas, precipitation, helium
_______ gas is used for filling weather observation balloons.
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उत्तर
Helium gas is used for filling weather observation balloons.
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संबंधित प्रश्न
What is nitrogen-fixation?
Fill in the blank :
________ is the most abundant inert gas present in air.
Name and briefly explain four ways by which pollution of air is caused by humans.
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 reason:
A burning candle stops burning if covered with a glass tumbler
Write ‘true’ or ‘false for the following;
The major component of air is oxygen.
With the help of a labeled diagram, describe a simple experiment to show the presence of oxygen and nitrogen in air using a piece of white phosphorus.
State the utility of oxygen for respiration in living organisms
Complete the statement given below by filling in the blank with the correct word from the words given:
The component of air used in photosynthesis is ______ and the products of photosynthesis is oxygen.
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.
