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state one instance where water under...

state one instance where water undergoes a physical change and one in which it which it undergoes a chemical change .

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The correct Answer is:
physical change : Vaporisation (to form water vapour or steam); chemical change : Electrolysis (to form hydrogen and oxygen )
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LAKHMIR SINGH & MANJIT KAUR-IS MATTER AROUND US PURE -Exercise
  1. what happens when the temperature of a saturated sugar solution is...

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  2. which of the following contains less solute at a given temperat...

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  3. state one instance where water undergoes a physical change and on...

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  4. state whether the following statements are true or false : (a) ...

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  5. choose one term from the following which includes the other thre...

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  6. which of the following is a sol ? shaving cream , milk , fog ,s...

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  7. fill in the following blanks : (a) Milk is a ……………………. Solutio...

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  8. define (a) solute and (b) solvent

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  9. What is the difference between solutions and colloids ?

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  10. what is the difference between colloids and suspensions ?

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  11. in what respects does a true solution differ form a colloidal s...

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  12. Classify the following into true solution and colloidal solutio...

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  13. How will you test whether a given solution is a colloidal solutio...

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  14. Explain what happens when a beam of light is passed through a co...

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  15. How will you distinguish a colloid from a solution ?

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  16. How will you differentiate between a suspension and a colloid ?

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  17. you have been given a suspension and a solution ,How could you...

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  18. Which of the following will show Tyndall effect?

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  19. Define the term solution. How many types of solutions are formed ? Wri...

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  20. which of the following is a sol ? shaving cream , milk , fog ,s...

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