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प्रश्न
Helium is preferred to hydrogen for filling balloons because it is:
पर्याय
lighter than air
almost as light as hydrogen
non-combustible
inflammable
उत्तर
non-combustible
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संबंधित प्रश्न
Complete the following word equation:
Calcium + water → calcium hydroxide + _________
Give an equation to express the reaction between:
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Name the gas formed in the reaction. How would you test the gas?
A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.
Write an equation for the reaction.
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What do you observe when a few drops of red litmus solution are added to the turbid solution.
Choose the correct option:
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