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प्रश्न
Fill in the blank
Hydrogen is ...................soluble in water.
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उत्तर
Hydrogen is sparingly soluble in water.
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संबंधित प्रश्न
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........................... means ‘maker of water’ in Greek.
TRUE \ FALSE
reacts with hot water to form copper oxide and hydrogen.
Hydrogen may be prepared in the laboratory by the action of a metal on an acid.
Which of the acids dilute sulphuric, concentrated sulphuric, dilute nitric acid and concentrated nitric acid would you choose? Explain why you would not use the acids you reject.
Why are the following metals not used in the lab. preparation of hydrogen?
aluminium
Complete and balance the following reaction.
Zn + H2O →_____________ +___________
Select the correct options for the following statement:
The metal used as a catalyst in hydrogenation of oils.
Complete and balance the equation:
[General method]
Reactions of metals with steam
Zinc - Zn + H2O → ______+ _______ [g]
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Zinc - Zn + 2NaOH → ______ + _______ [g]
Zn + 2KOH → ____ + _____ [g]
State the condition and give balanced equation for the conversion of water gas to hydrogen – in the Bosch process.
Give a balanced equation for the following conversion.
\[\ce{KAlO2<-KOH->K2ZnO2}\]
