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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 8

Give a Reason Why on Opening a Bottle of Soda (Carbon Dioxide Dissolved in Water) the Gas Escapes Out with a ‘Fizz’.

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प्रश्न

Give a reason why on opening a bottle of soda [carbon dioxide dissolved in water] the gas escapes out with a ‘fizz’.

एका वाक्यात उत्तर
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उत्तर

Solubility of gases in liquid decreases on decreasing the pressure and CO2 come out of water with a ‘fizz’ when pressure decreases on opening the bottle.

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पाठ 8: Water - Exercises

संबंधित प्रश्‍न

Colloids have the particle size range between


Explain the term of solvent.


Explain how the following factor affects the formation of a solution is proportion of the solute & the solvent.


Explain how the following factor affects the formation of a solution is Temperature of the solvent.


Define the term ‘solubility ’ of a solute in water. If 10 g. of a solute is added to 100 g. of water at 50°C and stirred, it is seen that the total solute dissolves at that temperature giving an unsaturated solution. Is 10 g, the solubility of the solute in water. Give reasons.


How are solutions generally classified. What is the basis of this classification.


Give four examples of each of the above types of solutions i.e. true solution, colloidal solution & suspension. Give a reason why a true solution does not exhibit ‘Tyndall effect’.


Select the correct answer of the following statement:

A heterogenous mixture of undissolved particles in dispersion medium, visible to the naked eye.


Complete the statement by filling the blank with the correct word from the option.

Solubility of a solute is the _______ amount of solute that will saturate 100 g. of water at t°C.


Two substances, A and B were made to react to form a third substance, A2B according to the following reaction

\[\ce{2A + B -> A2 B}\]

Which of the following statements concerning this reaction are incorrect?

(i) The product A2B shows the properties of substances A and B

(ii) The product will always have a fixed composition

(iii) The product so formed cannot be classified as a compound

(iv) The product so formed is an element


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