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प्रश्न
Write the balanced equation and give your observation when the following metal reacts:
Magnesium with boiling water
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उत्तर
Magnesium reacts slowly with boiling water and forms a base, magnesium hydroxide, liberating hydrogen gas.
\[\ce{Mg + 2H2O →Mg(OH)2 + H2 \uparrow}\]
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संबंधित प्रश्न
Give reason for the following:
A pop sound produced when hydrogen is burnt?
Give reason for the following:
Helium replaced hydrogen in weather observation balloons?
Multiple Choice Question
Hydrogen is
MULTIPLE CHOICE QUESTIONS
The name hydrogen was given by
- Cavendish
- Lavoisier
- Haber
- none of these
MULTIPLE CHOICE QUESTIONS
Which is the lightest of all elements?
- hydrogen
- helium
- lithium
- none of these
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Hydrogen is dried by passing it through conc. H2SO4.
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Water gas to hydrogen – industrially.
Give balanced equation for the following conversion:
Iron [III] oxide to iron – using hydrogen.
Give balanced equation for the following conversion:
Nitrogen to a basic gas – using hydrogen.
Select the correct options for the following statement:
The gas which has now replaced hydrogen in air balloons is ___.
Match the statements in List I with the appropriate answer in List II.
| List I | List II |
| 1. An atom of hydrogen | A: Chromic oxide |
| 2. A strong oxidising agent | B: Ammonia |
| 3. A promoter used in Bosch process | C: Iron |
| 4. A chemical used in the manufavture of fertilizers | D: One electron |
| 5. The catalyst used in production of a basic gas from nitrogen. | E: Dilute nitric acid |
Write a correctly balanced equation for the following “word equation”:
calcium + water → calcium hydroxide + hydrogen
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Two jars of H2 are collected – “one burns quietly and the other does not”.
Complete and balance the following equations:
Al + NaOH + ____ → ____ + ____
What do the following symbols represent : 2H and H2.
Describe briefly, with equations, the Bosch Process for the large scale production of hydrogen.
