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प्रश्न
- Name the experiment illustrated below.
- State the colour of the water that has entered the round-bottomed flask.

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उत्तर
1. The experiment is the fountain experiment and is used to demonstrate solubility.
2. The colour of the water that has entered the round-bottomed flask is red.
संबंधित प्रश्न
Name the drying agent used to dry HCl gas.
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
Hydrogen chloride gas is very soluble in water. It is dissolved in water to prepare hydrochloric acid by using an anti-suction device, as shown in the diagram. Very briefly explain how this device prevents the suction of water into the flask, in which hydrogen chloride gas is produced.
Hydrogen chloride dissolves in water to form an acidic solution.
Name the experiment which demonstrates that hydrogen chloride is very soluble in water.

The diagram shows an apparatus for the laboratory preparation of hydrogen chloride.
(i) Identify A and B
(ii) Write the equation for the reaction
(iii) How would you check whether or not the gas jar is filled with hydrogen chloride?
(iv) What does the method of collection tell you about the density of hydrogen chloride.
The following question is pertaining to the laboratory preparation of hydrogen chloride gas.
Write the equation for its preparation, mentioning the condition required.
What property of hydrogen chloride is demonstrated when it is collected by downward delivery (Upward displacement)?
State the following:
The drying agent used in the laboratory preparation of HCl gas.
