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प्रश्न
Give reason for the following:
A pop sound produced when hydrogen is burnt?
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उत्तर
Impure hydrogen gas burns in air with a pop sound. This is because of the presence of impurities in it.
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संबंधित प्रश्न
Hydrogen is combustible as well as a supporter of combustion.
State four uses of hydrogen:
Multiple Choice Question
Hydrogen is
MULTIPLE CHOICE QUESTIONS
Which is the lightest of all elements?
- hydrogen
- helium
- lithium
- none of these
FILL IN THE BLANK
In nature, hydrogen occurs as a .................. molecule represented as H2
Give balanced equation for the following conversion:
Nitrogen to a basic gas – using hydrogen.
Write a correctly balanced equation for the following “word equation”:
calcium + water → calcium hydroxide + hydrogen
Explain the following:
Two jars of H2 are collected – “one burns quietly and the other does not”.
Write down the “word equation” for the following reaction:
sodium hydroxide solution + zinc → ?
How would you obtain ‘hydrogen from sodium hydroxide’ solution other than by electrolysis?
