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प्रश्न
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 :
पर्याय
milk white
grey
silvery
yellow
उत्तर
milk white
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संबंधित प्रश्न
Tick (√) the most appropriate answer.
The presence of water vapour in air is essential for :
Statement given below is incorrect. Write the correct statement :
Potassium nitrate on strong heating decomposes into potassium nitrite and nitrogen gas.
Fill in the blanks
Plants and animals maintain the balance of carbon ___________and _________ in the air.
Give a reason why nitrogen is filled in food packets and not oxygen.
Complete the statement given below by filling in the blank with the correct word from the words given
___________is an example of a pollutant present in the air.
The main component of air is oxygen.
Give the components present in the air with a percentage?
______ is necessary for all acids.
Carbon dioxide gas is ______.
Nitrogen is an essential element present in proteins and nucleic acids which are the building blocks of living things.
