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प्रश्न
Correct the following statement:
Hydrogen is dried by passing it through conc. H2SO4.
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उत्तर
Hydrogen is dried by passing it through calcium chloride, caustic potash, and phosphorous pentoxide.
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संबंधित प्रश्न
Hydrogen is combustible as well as a supporter of combustion.
Give reason for the following:
A pop sound produced when hydrogen is burnt?
Hydrogen is a good reducing agent: What do you understand by the above statement? Explain with the help of copper oxide as an example.
State four uses of hydrogen:
Define catalytic hydrogenation.
Multiple Choice Question
Hydrogen is responsible for producing
FILL IN THE BLANK
In nature, hydrogen occurs as a .................. molecule represented as H2
Write the balanced equation and give your observation when the following metal reacts:
Sodium with cold water
Give balanced equation for the following conversion:
Nitrogen to a basic gas – using hydrogen.
Give a chemical test to distinguish between the following gases:
Hydrogen and oxygen
What do the following symbols [or formula] denote : 2H ; H2 ; H+. [two atoms, molecule, ion]
When steam is passed over red-hot iron, magnetic oxide of iron and hydrogen are obtained. “The reaction between steam and red-hot iron is a Reversible Reaction.” What is meant by this statement.
Write balanced equation for the following reaction:
magnesium + dil. hydrochloric acid → ___
Explain the following:
Two jars of H2 are collected – “one burns quietly and the other does not”.
Write correctly the balanced equation for the following:
‘When zinc filings are added to a concentrated solution of sodium hydroxide’.
Give balanced equation for obtaining hydrogen from cold water using a divalent active metal.
Give a reason for the following.
A mixture of hydrogen and chlorine can be separated by passage through a porous pot.
