Tag: introduction to acid and base

Quizzes (1) Questions (35)

Questions Related to introduction to acid and base

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

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

  1. Ammonium hydroxide, Ammonium phosphate

  2. Sodium hydroxide, Rayon

  3. Calcium hydroxide, Bleaching powder

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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

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

Aluminum hydroxide is used for :

  1. fire extinguishers

  2. antacid

  3. water purification

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Which base is employed as the electrolyte in alkaline batteries?

  1. $Ca(OH) _2$
  2. $Al(OH) _3$
  3. $FeOH$
  4. $KOH$
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

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

  1. Tartaric acid

  2. Phosphoric acid

  3. Carbonic acid

  4. Acetic acid
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

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

  1. Phophoric acid

  2. Sulphuric acid

  3. Citric acid

  4. Tartaric acid
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

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

  1. $Ca(OH) _2$
  2. $NaOH$
  3. $KOH$

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
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.