11. Which of the following is a liquid solution consisting of liquid solvent and gas solute?
air
c. vinegar
alcohol
d. soft drink
12. Which of the following is the most common solid solutions
copper and bronze
C. copper and steel
bronze and steel
d. copper and gold
13. Your father asked you to prepare a hot coffee for him. How can you dissolve the
powdered coffee, creamer and sugar in a glass of hot water?
a. by stiming
c. by heating
b. by shaking
d. by pulverizing
14. How can you dissolve powdered milk faster?
by shaking
b. by stirring
c. by using hot water
d. all of the above
15. Which substance is insoluble?
flour
b.
pepper
C. rock salt
d. granulated sugar
ing docrintions or examples below and identify the t
Answers
Answer:
12. d.by pulverizing
14. d.all of the above
15. b.pepper
Below are the answers to the following multiple-choice question.
11. Soft drinks - soft drinks consist of liquid as the dispersion medium and gas ( such as carbon dioxide) as the dispersed phase. It is the colloidal solution of the gas in the liquid phase. So the correct option is (d)
12. copper and gold - Copper and gold is the most common solid solution and is used as electrolyte. Both elements are solid and it is used in electrolyte for the conductance of electricity. So the correct answer is (d)
13. By heating - By heating the coffee powder, cream, and sugar in a glass of hot water, we will obtain the hot coffee fastly as heating causes the dissolving of all these fastly. So the correct answer is (b)
14. By using hot water - By using hot water, we can dissolve the milk powder faster, as hot water dissolves any substance fastly. So the correct answer is (c)
15. Pepper - Pepper is insoluble, while flour, rock salt, and granulated sugar are soluble. So the correct answer is (b).