A student is asked to determine of certain fraction. But wrongfully, he divides the fraction 3 2 20 by and gets the answer in excess by than the correct one. Find the fraction.
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Identify the type of change, when-
1. NaCl dissolves in water.
2.Silver tarnishes
3. An apple is cut
4.Heat causes water to change to steam
5.Baking soda reacts with vinegar
6.Fe rusts
7. Washing soda is mixed with lemon juice . bubbles are formed with the evolution of gas.
8. Mixing a cocktail of fruit juice
9. Squeezing an orange
10. Boiling potatoes
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