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2) Inn STU, I cst ancm,
I (TV = 4cm 1 (sul s cm
Answers
Answer:
Question 1.
Some shopkeepers mix many cheap and harmful substances in the food materials. This process is
called adulteration. Anybody who are involved in such kind of illegal practices are liable for
imprisonment.
(a) Why shopkeepers mix cheap and harmful substances in food materials?
(b) How will you separate impurities from grains and pulses?
(c) What values of shopkeepers are shown here?
Question 2.
There were guests at Sonam’s house. Sonam thought ofThere were guests at Sonam’s house. Sonam thought of making lemonade for them. She
dissolved sugar in chilled water and observe that sugar was taking long time to dissolve.
Meanwhile, Sonam’s mother came and asked her to transfer the upper chilled water in another
container and then add water at normal temperature to this sugar settled at bottom.
Sonam then found it easy to dissolve the sugar for lemonade.
(a) What is saturated solution?
(b) What is the effect of temperature on the capacity of water in dissolving substances?
(c) What will happen if we cool a supersaturated solution?
(d) What value of Sonam is shown here?Question 1.
Some shopkeepers mix many cheap and harmful substances in the food materials. This process is
called adulteration. Anybody who are involved in such kind of illegal practices are liable for
imprisonment.
(a) Why shopkeepers mix cheap and harmful substances in food materials?
(b) How will you separate impurities from grains and pulses?
(c) What values of shopkeepers are shown here?
Question 2.
There were guests at Sonam’s house. Sonam thought ofThere were guests at Sonam’s house. Sonam thought of making lemonade for them. She
dissolved sugar in chilled water and observe that sugar was taking long time to dissolve.
Meanwhile, Sonam’s mother came and asked her to transfer the upper chilled water in another
container and then add water at normal temperature to this sugar settled at bottom.
Sonam then found it easy to dissolve the sugar for lemonade.
(a) What is saturated solution?
(b) What is the effect of temperature on the capacity of water in dissolving substances?
(c) What will happen if we cool a supersaturated solution?
(d) What value of Sonam is shown here?