Tag: introduction to acid and base

Questions Related to introduction to acid and base

Which of the following base is used in the manufacturing of bleaching powder?

chemistry introduction to acid and base neutralisations in everyday life acids and bases in daily life neutralisation reaction

  1. Sodium hydroxide

  2. Calcium hydroxide

  3. Magnesium oxide

  4. Ammonium hydroxide

Show answer
Correct Option: B
Explanation:

Bleaching powder is manufactured from calcium hydroxide.

Bleaching powder is $CaOCl _2\cdot 2H _2O$

$X$ is used in the manufacture of $Y$ which is used as a disinfectant. What are $X$ and $Y$?

chemistry introduction to acid and base neutralisations in everyday life acids and bases in daily life neutralisation reaction

  1. Ammonium hydroxide, Ammonium phosphate

  2. Sodium hydroxide, Rayon

  3. Calcium hydroxide, Bleaching powder

  4. None of the above

Show answer
Correct Option: C
Explanation:

Calcium hydroxide- $Ca(OH) _2$ is used in the manufacture of bleaching powder. Bleaching powder is used as a disinfectant.

Aluminum hydroxide is used for :

chemistry introduction to acid and base neutralisations in everyday life acids and bases in daily life neutralisation reaction

  1. fire extinguishers

  2. antacid

  3. water purification

  4. all of the above

Show answer
Correct Option: D
Explanation:

Aluminum hydroxide is an interesting base, because it has a wide number of applications, including its use in antacids. As such, it reacts with and neutralizes stomach acid, and for that reason is found in commercial antacids. It is useful in fire extinguishers as a foaming agent. Aluminum hydroxide is also used in water purification, in dyeing garments, and in the production of certain kinds of glass.

Which base is employed as the electrolyte in alkaline batteries?

chemistry introduction to acid and base neutralisations in everyday life acids and bases in daily life neutralisation reaction

  1. $Ca(OH) _2$

  2. $Al(OH) _3$

  3. $FeOH$

  4. $KOH$

Show answer
Correct Option: D
Explanation:

Aqueous potassium hydroxide is employed as the electrolyte in alkaline batteries based on nickel-cadmium, nickel-hydrogen, and manganese dioxide-zinc. Potassium hydroxide is preferred over sodium hydroxide because its solutions are more conductive.

Which base is used in manufacture of soap?

chemistry introduction to acid and base neutralisations in everyday life acids and bases in daily life neutralisation reaction

  1. $Ca(OH) _2$

  2. $NaOH$

  3. $NH _3$

  4. $NH _4OH$

Show answer
Correct Option: B
Explanation:

Sodium hydroxide (caustic soda) is used in the manufacture of soap. It is used in petroleum-refining; in making medicines, paper, pulp, etc. It is used in making rayon.

Which acid is used in dentistry and orthodontics as an etching solution?

chemistry introduction to acid and base neutralisations in everyday life acids and bases in daily life neutralisation reaction

  1. Tartaric acid

  2. Phosphoric acid

  3. Carbonic acid

  4. Acetic acid

Show answer
Correct Option: B
Explanation:

Phosphoric acid is used in dentistry and orthodontics as an etching solution, to clean and roughen the surfaces of teeth where dental appliances or fillings will be placed. Phosphoric acid is also an ingredient in over-the-counter anti-nausea medications that also contain high levels of sugar (glucose and fructose). This acid is also used in many teeth whiteners to eliminate plaque that may be on the teeth before application.

What is mixed with sand and water to make mortar which is used in the construction of buildings?

chemistry introduction to acid and base neutralisations in everyday life acids and bases in daily life neutralisation reaction

  1. $NaOH$

  2. $KOH$

  3. $NH _4OH$

  4. $Ca(OH) _2$

Show answer
Correct Option: D
Explanation:

Calcium hydroxide is also known as slaked lime. It is mixed with sand and water to make mortar which is used in the construction of buildings. 

Which of the following is used as washing soda and for softening hard water?

chemistry introduction to acid and base neutralisations in everyday life acids and bases in daily life neutralisation reaction

  1. Sodium carbonate

  2. Calcium hydroxide

  3. Sodium hydrogen carbonate

  4. Magnesium hydroxide

Show answer
Correct Option: A
Explanation:

Sodium carbonate is a base which is used as washing soda and for softening hard water.

Which of the following is used as preservative and flavoring agent?

chemistry introduction to acid and base neutralisations in everyday life acids and bases in daily life neutralisation reaction

  1. Phophoric acid

  2. Sulphuric acid

  3. Citric acid

  4. Tartaric acid

Show answer
Correct Option: C
Explanation:

As it is one of the stronger edible acids, the dominant use of citric acid is as a flavoring and preservative in food and beverages, especially soft drinks. Citric acid is a naturally occurring preservative used in many applications including canning, flavoring, cleaning, and even photography development.

Which of the following base is used for cleaning and commonly known as lye?

chemistry introduction to acid and base neutralisations in everyday life acids and bases in daily life neutralisation reaction

  1. $Ca(OH) _2$

  2. $NaOH$

  3. $KOH$

  4. All of the above

Show answer
Correct Option: B
Explanation:

A common base used for cleaning is sodium hydroxide, known commonly as lye or caustic soda. It is not to be taken internally, because it is highly damaging to human tissueparticularly the eyes. Lye appears in drain cleaners, such as Drano, and oven cleaners, such as Easy-Off, which make use of its ability to convert fats to water-soluble soap.