Tag: chemistry

Questions Related to chemistry

$CH _3COOH$ is a:

chemistry acids and alkalis neutralisations in everyday life acids and bases in daily life neutralisation reaction

  1. reducing agent

  2. dehydrating agent

  3. drying agent

  4. pickling agent

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Correct Option: D
Explanation:

Acetic acid is a food additive. It is added to adjust pH and acts as a pickling agent for vegetables.

Wasp stings can be treated with:

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

  1. baking soda

  2. vinegar

  3. washing soda

  4. milk of magnesia

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Correct Option: B
Explanation:

Wasp sting has basic venom. So an acid could be used to treat it.

Vinegar $(CH _3COOH)$/ Acetic acid is used to treat the wasp sting.

Soda water contains :

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

  1. carbonic acid

  2. sulphuric acid

  3. carboxylic acid

  4. nitrous acid

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Correct Option: A
Explanation:

Soda water is carbonated water. It contains water into which carbon dioxide gas under pressure has been dissolved. It is carbonic acid. The vast majority of carbonated water is sold in drink bottles as soft drinks and beverages.

Vinegar contains which organic acid?

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

  1. Vanillic acid

  2. Lactic acid

  3. Oxalic acid

  4. Acetic acid

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Correct Option: D
Explanation:

Vinegar is a liquid consisting about 5-20% of organic acid that is acetic acid $(CH _3COOH)$ and water. It is a mild acid. Vinegar is mainly used as cooking ingredient.

Which of the following base is used as antacid to neutralize stomach acidity?

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

  1. ${ Mg(OH) } _{ 2 }$

  2. $KOH$

  3. ${ Ca(OH) } _{ 2 }$

  4. $NaOH$

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Correct Option: A
Explanation:

Magnesium hydroxide is also known as milk of magnesia and it is a common component of antacids and laxatives. It interferes with the absorption of folic acid and iron. It carries away much of the body's supply of potassium and neutralizes the stomach acid.

To protect tooth decay we are advised to brush our teeth regularly. The nature of the toothpaste commonly used is:

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

  1. acidic

  2. basic

  3. netural

  4. corrosive

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Correct Option: B
Explanation:

Mouth has salivary amylase enzyme and the process of digestion starts from mouth making the acidic environment which causes the tooth decay so it is neutralized by using toothpaste basic in nature.

Milk of magnesia is an:

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

  1. acid

  2. antacid

  3. alkali

  4. rock salt

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Correct Option: B,C
Explanation:

Milk of magnesia is $Mg(OH) _2$, it is an alkali.

Antacid is those compounds which completely neutralizes an acid.
For example: $\underbrace{Mg(OH) _2} _{Base}+\underbrace{H _2SO _4} _{Acid}\longrightarrow  \underbrace{MgSO _4} _{Neutral\ salt}+H _2O$
Thus, milk of magnesia is also an antacid.

Which of the following is a use of $Al(OH) _3$?

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

  1. It is used in fire extinguisher as a foaming agent

  2. It is used in the preparation of fertilizers

  3. It is used in removing stains of grease from cloths

  4. It is used as an antacid

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Correct Option: A
Explanation:

$Al(OH) _3$ is used in fire extinguisher as a foaming agent.

Which of the following is a use of sodium hydroxide?

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

  1. It is used in the manufacture of soaps, paper.

  2. It is used in the manufacture of synthetic fibers like rayon.

  3. It is important constituent in drain cleaners.

  4. All of the above.

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Correct Option: D
Explanation:

Sodium hydroxide is used in the manufacture of soaps, paper; in the manufacture of synthetic fibers like rayon and is important constituent in drain cleaners.


Hence option D is correct

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 $CaOCl _2\cdot 2H _2O$