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प्रश्न
Dilute hydrochloric acid is added in turn to a mixture of iron and sulphur and to the compound formed between iron and sulphur. Name the gas formed in each case.
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उत्तर
When dilute hydrochloric acid is added to a mixture of iron and sulphur, then hydrogen gas will evolve. While, when dilute hydrochloric acid is added in turn to
the compound formed between iron and sulphur the gas formed will be H2S.
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संबंधित प्रश्न
When dilute HCl is added to a salt Q, a brisk effervescence is produced and the gas turns lime water milky.
When NH4OH solution is added to the above mixture (after adding dilute HCl), it produces a white precipitate which is soluble in excess NH4OH solution.
Study the figure given below and answer the questions which follow:

- Identify the gas Y.
- What property of gas Y does this experiment demonstrate?
- Name another gas which has the same property and can be demonstrated through this experiment.
Name :
Two colourless gases which when mixed produce a white solid.
How is the gas collected and why?
Describe an experiment to prove the following:
HCI gas is heavier than air.
Choose the correct answer from the options given below: HCl gas can be prepared by direct combination of hydrogen and chlorine gas in presence of
How will you show that hychloric acid contains both hydrogen and chlorine (other than by electrolysis) ?
Hydrogen chloride dissolves in water to form an acidic solution.
Name the experiment which demonstrates that hydrogen chloride is very soluble in water.
Study the figure given below and answer that questions that follow:
(i) Identify the gas Y.
(ii) What property of gas Y does this experiment demonstrate?
(iii) Name another gas which has the same property and can be demonstrated through this experiment.
- Name the experiment illustrated below.
- State the colour of the water that has entered the round-bottomed flask.

