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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
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उत्तर
milk white
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संबंधित प्रश्न
Answer the question put against the following constituents of air :
Carbon dioxide : “Although carbon dioxide plays no role in respiration, all life would come to an end if there is no carbon dioxide in air.” Support this statement with relevant facts.
What is nitrogen-fixation?
Fill in the blanks
Oxygen is used in ___________the food to get _______.
Fill in the blank
The reddish-brown powder on the surface of iron nails exposed to air and moisture is called _____.
Give a reason why nitrogen is filled in food packets and not oxygen.
What is the percentage of nitrogen in air?
Write the percentage of the gases present in air.
List out the uses of carbon dioxide.
Carbon dioxide with water changes
What is the composition of air?
