Tag: neutralisations in everyday life

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

If the soil is basic the plant do not grow proper, what should we add to it to improve its quality?

  1. Slaked lime

  2. Quick lime

  3. Urea

  4. Organic matter
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

To improve the quality of a basic soil, an acid should be added. Slaked lime ($ Ca{ (OH) } _{ 2 } $) and quick lime ($ Ca{ O }$) are basic in nature. Urea is neutral. Hence, organic matter is the answer.

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

Remedies of which of the following are examples of neutralisation in everyday life?

  1. Ant sting

  2. Indigestion

  3. Factory wastes

  4. None of these
Reveal answer Fill a bubble to check yourself
A,B Correct answer
Explanation

The venom of ant sting is acidic in nature, which is neutralised by the application of alkali like sodium bicarbonate. Indigestion happens due to over production of hydrochloric acid in stomach, which is neutralised by an antacid which is alkali in nature. These are examples of neutralisation in everyday life.

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

For the growth of plants which of the following top soil is suitable the most:

  1. Clay soil

  2. Black soil

  3. Loam soil

  4. Sandy soil
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Loam soil is considered ideal for gardening and agricultural uses because it retains nutrients well and retains water while still allowing excess water to drain away.

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

Honey bee stings and ant bites can be _________ using alkaline medicine such as baking powder.

  1. acidifies

  2. neutralize

  3. prevented

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The venom of honey bee and ant bites are acidic in nature. So, it's effects can be neutralised by bicarbonate of soda such a baking soda or an alkali (basic in nature). 

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

Why bee strings are treated by alkaline solutions?

  1. Because it is basic in nature.

  2. Because it is acidic in nature.

  3. Because it is treatable by only alkaline solution.

  4. None of these.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The venom of a honey bee is acidic in nature. 


So, it's effects can be neutralised by bicarbonate of soda such a baking soda or an alkali (basic in nature). 

Hence the option B is correct.

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

Using toothpaste in daily life is the example of _________.

  1. acidic reaction

  2. basic reaction

  3. neutralization reaction

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Toothpaste is slightly basic is nature (pH ~ 8). The acid produced on the tooth enamel (commonly known as acid erosion) is neutralised by the toothpaste, cleaning your teeth. Hence, usage of toothpaste is the example of a neutralisation reaction.

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

Acids and bases are important because of :

  1. their use in industry

  2. their effects on human health

  3. their effects on farmer's crops

  4. their use in neutralization to form salts
Reveal answer Fill a bubble to check yourself
A,B,C,D Correct answer
Explanation
1. Acid and base are commonly used in industry on a large scale. For example, The steel industry uses hydrochloric acid to clean metal sheets before processing. On the other side of the pH scale, paper manufacturers make use of sodium hydroxide to remove lignin from paper pulp.

2. Both these are also important for the human body. Our kidneys and lungs work to maintain the acid-base balance. Acids are very lethal if not taken care of for the human body and causes like excessive skin problems, cramping, tooth decay, ligament problems, and even cancers.

3. The acid attack associated with a chemical change in the soil that can restrict the availability of essential plant nutrients and increase the availability of toxic elements. It is known as Soil acidity affects which totally affects the growth and nutritional values of crops.

4. All acid and base react with each other and resulting in a neutralization reaction by forming a salt and water like
$HCl + NaOH \to NaCl (salt) + H _2O (water).$

Thus all given options are correct.
Multiple choice chemistry introduction to acid and base neutralisations in everyday life acids and bases in daily life neutralisation reaction

Which acids/ bases are used for the following?
(i) To neutralize sting of wasps
(ii) In alkaline batteries
(iii) Manufacturing of soap

  1. (i) $CH _3CHO$ (ii) $CsOH$ (iii) $Ca(OH) _2$
  2. (i) $CH _3COOH$ (ii) $CuSO _4$ (iii)$ Ba(OH) _2$
  3. (i) $CH _3COOH$ (ii) $KOH$ (iii)$ NaOH$

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  1. Formic acid is produced by ants and acetic acid is used as anti-wasp agents.
    2. In alkali batteries a base is used as an electrolyte which gives hydroxyl ions in solution.
    3. Manufacturing of soap requires an alkali like $NaOH$ and long chain of fatty acids like sodium stearate to form an ester or sodium acetate salt.
Multiple choice chemistry introduction to acid and base neutralisations in everyday life acids and bases in daily life neutralisation reaction

$X+H _2O\rightarrow Y$. 

$Y$ is used to remove grease stains from woollen clothes. Identify $X$ and $Y$.

  1. $X=HCl, Y=NaOH$
  2. $X=NH _4OH, Y=NH _3$
  3. $X=NH _3, Y=NH _4OH$

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

Ammonia solution is good for removing stains and tarnish and can also repel moths and reduce paint odours. As ammonia reacts with the water, it is dissolved in to produce ammonium ions and hydroxide ions.

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

Indigestion is painful so to relieve indigestion, we take an antacid such as milk of magnesia , which 
contains :

  1. magnesium hydroxide

  2. hydrochloric acid

  3. tartaric acid

  4. calcium hydroxide
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Milk of magnesia (also known as magnesium hydroxide; $ { Mg }{ (OH) } _{ 2 } $) is basic in nature and one of the most important ingredients of an antacid. 


The hydroxide ions from $ { Mg }{ (OH) } _{ 2 } $) undergo neutralisation with $ { H }Cl $ in the stomach produced during indigestion or gastric problems, to produce water. Equation is as follows :

$ \quad 2HCl\quad +\quad Mg{ (OH) } _{ 2 }\quad \rightarrow \quad Mg{ (Cl) } _{ 2 }\quad +\quad 2{ H } _{ 2 }O $


Hence the option A is correct.