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प्रश्न
Name a gas which burns in air or oxygen forming water.
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उत्तर
The gas that burns in oxygen to form water is hydrogen.
APPEARS IN
संबंधित प्रश्न
Indicate which of the following statement is true and which is false:
Hydrogen gas is easily liquefiable.
Give reason for the following:
A pop sound produced when hydrogen is burnt?
Give a balanced chemical equation for the reaction.
Define catalytic hydrogenation.
MULTIPLE CHOICE QUESTIONS
Which is the lightest of all elements?
- hydrogen
- helium
- lithium
- none of these
Write the balanced equation and give your observation when the following metal reacts:
Magnesium with steam
Choose the correct option:
The composition of the nucleus of deuterium is
Choose terms from the options given in brackets to complete this sentence.
A metal …………….. hydrogen in the activity series gives hydrogen with …………… acid or …………… acid.
(above, below, dilute hydrochloric, concentrated hydrochloric, dilute sulphuric).
Give equations for the reactions.
How is hydrogen separated from carbon dioxide and carbon monoxide?
With reference to the equation : Cl2 + H2S → 2HCl + S pertaining to a redox reaction – select the correct answer.
Chlorine acts as an ______ agent.
Give balanced equation for the following conversion:
Iron [III] oxide to iron – using hydrogen.
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 |
Give a chemical test to distinguish between the following gases:
Hydrogen and oxygen
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 → ___
Write a correctly balanced equation for the following:
When steam is passed over red hot iron.
What do the following symbols represent : 2H and H2.
Give a reason for the following.
A mixture of hydrogen and chlorine can be separated by passage through a porous pot.
