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प्रश्न
Using a burning candle and a jar of hydrogen – how would you prove experimentally that Hydrogen does not support combustion.
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उत्तर
Hydrogen extinguishes the burning candle when pushed inside the jar. This shows that hydrogen does not support combustion.
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संबंधित प्रश्न
Indicate which of the following statement is true and which is false:
The hydrogen molecule is monovalent.
MULTIPLE CHOICE QUESTIONS
Which is the lightest of all elements?
- hydrogen
- helium
- lithium
- none of these
FILL IN THE BLANK
Hydrogen is present abundantly in the ................
Write the balanced equation and give your observation when the following metal reacts:
Sodium with cold water
Write the balanced equation and give your observation when the following metal reacts:
Calcium with cold water
What do the following symbols [or formula] denote : 2H ; H2 ; H+. [two atoms, molecule, ion]
Write down the “word equation” for the following reaction:
sodium hydroxide solution + zinc → ?
What do the following symbols represent : 2H and H2.
Give balanced equation for obtaining hydrogen from cold water using a monovalent active metal.
Give balanced equation for obtaining hydrogen from cold water using a divalent active metal.
