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प्रश्न
Why is copper not used to prepare hydrogen by the action of dilute hydrochloric acid or dilute sulphuric acid on the metal, [copper [Cu] below hydrogen – no reaction]
उत्तर
Cu is below hydrogen in reactivity series and cannot displace H2 from acid and no-reaction takes place.
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संबंधित प्रश्न
Write two physical properties of hydrogen.
What is hydrogenation?
Discuss the occurrence of hydrogen in the universe and on the earth ?
Describe two chemical properties of hydrogen with equations.
With reference to the uses of hydrogen, give reason for the following:
Reaction of hydrogen with nitrogen under specific conditions finds industrial utility.
Complete and balance the equation:
Conversion of hydrogen to -
Ammonia - N2 + 3H2 ⇌ ______
Complete and balance the equation:
Conversion of hydrogen to -
Hydrogen sulphide - H2 + S → ________
Complete and balance the equation:
Hydrogen in metallurgy - reduction of
Iron [III] oxide - Fe2O3 + 3H2 → ________ + ______
Place the metals calcium, iron, magnesium and sodium in order of their activity with water, placing the most active first. Write the equation for each of the above metals which react with Water.
State the use of hydrogen –
In the extraction of metals
