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प्रश्न
Select the correct options for the following statement:
The gas which has now replaced hydrogen in air balloons is ___.
विकल्प
argon
helium
neon
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उत्तर
The gas which has now replaced hydrogen in air balloons is helium.
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संबंधित प्रश्न
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Multiple Choice Question
Hydrogen is responsible for producing
Multiple Choice Question
Hydrogen is
Choose the correct option:
The composition of the nucleus of deuterium is
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With reference to the equation : Cl2 + H2S → 2HCl + S pertaining to a redox reaction – select the correct answer.
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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 |
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What do you observe when a piece of sodium is dropped into cold water?
