Salts and Their Role in Industry and Daily Life
Chemistry ⇒ Acids, Bases, and Salts
Salts and Their Role in Industry and Daily Life starts at 9 and continues till grade 12.
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A factory uses sodium carbonate to soften water for industrial processes. Explain how sodium carbonate softens hard water.
A patient is given an intravenous saline solution. Explain why saline, rather than pure water, is used for this purpose.
A water treatment plant uses alum to purify water. What is the chemical formula of alum commonly used for this purpose?
Describe how salts are used in the preservation of food.
A factory uses sodium carbonate to soften water for industrial processes. Explain how sodium carbonate softens hard water.
A patient is given an intravenous saline solution. Explain why saline, rather than pure water, is used for this purpose.
A water treatment plant uses alum to purify water. What is the chemical formula of alum commonly used for this purpose?
A chemical plant produces 500 kg of calcium chloride (CaCl2) daily as a byproduct. If the molar mass of CaCl2 is 111 g/mol, calculate the number of moles of CaCl2 produced per day.
Which of the following is a double salt?
(1) Potassium nitrate
(2) Mohr's salt
(3) Sodium chloride
(4) Calcium carbonate
Which of the following is NOT a common use of sodium chloride in daily life?
(1) Food seasoning
(2) De-icing roads
(3) Fertilizer for plants
(4) Preserving food
Which of the following salts is used as a drying agent in laboratories?
(1) Sodium chloride
(2) Calcium chloride
(3) Potassium nitrate
(4) Ammonium sulfate
Which of the following salts is used as a food preservative?
(1) Sodium benzoate
(2) Calcium carbonate
(3) Potassium sulfate
(4) Magnesium chloride
Fill in the blank: Baking powder contains __________ as one of its main ingredients, which helps baked goods rise.
Fill in the blank: The chemical formula for gypsum, a salt used in the construction industry, is __________.
Fill in the blank: The salt commonly used to melt ice on roads in cold countries is __________.
Fill in the blank: The salt used as an antacid to relieve heartburn is __________.
True or False: Ammonium nitrate is commonly used as a fertilizer in agriculture.
True or False: Epsom salt is chemically known as magnesium sulfate.
True or False: Magnesium sulfate is used as a laxative in medicine.
True or False: Potassium iodide is used in medicine to treat thyroid disorders.
