Ncert Solutions For Class 12 Chemistry Chapter 16 | Download Free PDF

Ncert Solutions For Class 12 Chemistry Chapter 16 in English

Adda247 provides NCERT Solutions for Class 12 Chemistry Chapter 16. The NCERT Solutions provided here will enhance the concepts of the students, as well as suggest alternative methods to solve particular problems to the teachers.

NCERT Solutions are drafted by the faculty at Adda247 to help students learns all the complex concepts efficiently. NCERT Textbook are answered in a systematic format to help the students learn in a shorter duration. These solutions are tailored by a vast research to make it easier for the students to complete whole syllabus before board exams. A lot of materials are available online but it is very important for the students to understand their needs and find it accordingly. For this purpose, we at Adda247 provided both online and offline format of the solutions completely based on the latest syllabus of the CBSE board.

Chemistry NCERT Solutions Class 12 includes a number of topics that offers students an in-depth knowledge of different aspects of Chemistry. To distinguish the equations and chemical formulas, after solving the NCERT chemistry class 12 PDF can be handy. The solution provided by Adaa247 is available in easily downloaded format.

You can refer to the chemistry class 12 solutions for better solutions and score good marks in board as well as competitive exams.

Benefits of Solutions of NCERT class 12 Chemistry:

• NCERT Solutions for Class 12 is helpful to solve questions from other reference books too.
• NCERT Solutions for class 12 Chemistry will assist students to cross check answers and prepare for the exams in a strategic way.

The students can access the solutions anywhere while browsing web easily. The solutions are very precise and accurate.

NCERT Solution of Chemistry Class 12 Chapter 16: Chemistry in everyday life

Class 12 Chemistry Chapter 16 deals with the application of Chemicals and chemical process in daily life. The chapter also includes topics related to types of drugs and its categorization like those present in foods, cleansing agents, the beneficial action of different classes of drugs, and drug-target interaction. The chapter renders some knowledge about chemicals.

In this regard, the Class 12 Chemistry Chapter 16 CBSE NCERT Solutions are essential for every student.

Chemistry is important because everything you do is chemistry! Even our body is made of chemicals. Chemical reactions occur when we breathe, eat, or just sit there reading. All matter is made of chemicals, so the importance of chemistry is that it’s the study of everything.

Chemistry is a big part of your everyday life. You find chemistry in foods, the air, cleaning chemicals, your emotions, and literally every object you can see or touch. Here are 10 examples of everyday chemistry.

Some chemicals used in our homes:

Alcohol. (ethanol) C2H6O. …

Alka Seltzer (sodium bicarbonate) CHNaO3 …

Antifreeze. (ethylene glycol) C2H6O2 …

Antiperspirant. (aluminum chlorohydrate) Al2Cl(OH)5 …

Aspirin (acetylsalicylic acid) C9H8O4 …

Baking powder. (sodium bicarbonate) …

Battery acid. (sulphuric acid) …

Bleach (laundry) (sodium hypochlorite).

Class 12 Chemistry Chapter 16 NCERT Solutions can be easily downloaded for free from various educational websites. These solutions are curated by scholars and experts of Chemistry, strictly adhering to the updated CBSE syllabus and question pattern. These are useful for quick references and detailed revising of important questions.

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Key features of NCERT Solutions Class 12 Chemistry

• It provides a complete overview of the chapter.
• Comes handy when revising.
• The complex subject of Biomolecules is explained in simple language.
• Clear doubts that may arise while going through the chapter.
• Helps in preparation of not only board exams but also in other competitive exams.
• Contains diagrams.

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Important questions of NCERT Solutions of Chemistry Class 12 Chapter 16

1 Why do we need to classify drugs in different ways?

Answer:

The classification of drugs and the reasons for classification are as follows:

(i) On the basis of pharmacological effect:

This classification provides doctors the whole range of drugs available for the treatment of a particular type of problem. Hence, such a classification is very useful to doctors.

(ii) On the basis of drug action:

This classification is based on the action of a drug on a particular biochemical process. Thus, this classification is important.

(iii) On the basis of chemical structure:

This classification provides the range of drugs sharing common structural features and often having similar pharmacological activity.

(iv) On the basis of molecular targets:

This classification provides medicinal chemists the drugs having the same mechanism of action on targets. Hence, it is the most useful to medicinal chemists.

2 Explain the term, target molecules or drug targets.

Answer:

In medical chemistry, drug targets refer to the key molecules involved in certain metabolic pathways that result in specific disease. Carbohydrates, proteins, lipids, and nucleic acids are examples of drug targets.

Drugs are chemical agents designed to inhibit these target molecules by binding with the active sites of the key molecules.

3 Name the macromolecules that are chosen as drug targets.

Answer:

The macromolecules chosen as drug targets are carbohydrates, lipids, proteins, and nucleic acids.

4 Why should not medicines be taken without consulting doctors?

Answer:

A medicine can bind to more than one receptor site. Thus, a medicine may be toxic for some receptor sites. As a result, medicines may be poisonous in such cases. Hence, medicines should not be taken without consulting doctors.

5 Define the term chemotherapy.

Answer:

The use of chemicals for therapeutic effect is called chemotherapy.

For example, the use of chemicals in the diagnosis, prevention and treatment of diseases.

6 Which forces are involved in holding the drugs to the active site of enzymes?

Answer:

Either of the following forces can be involved in holding drugs to the active sites of enzymes .

i.)   Ionic bonding.

ii.) Hydrogen bonding.

iii. Dipole – dipole interaction.

iv.) Van der Waals forces.

7 While antacids and antiallergic drugs interfere with the function of histamines, why do these not interfere with the function of each other?

Answer:

Specific drugs affect particular receptors. Antacids and anti – allergic drugs work on different receptors. This is the reason why antacids and anti – allergic drugs do not interfere with each other’s function, but interfere with the functions of histamines.

8 Low level of noradrenaline is the cause of depression. what type of drugs are needed to cure this problem? Name two drugs.

Answer:

Anti – depressant drugs are needed to counteract the effect of depression. these drugs inhibit enzymes catalysing the degradation of the neurotransmitter, noradrenaline. As a result, the important neurotransmitter is slowly metabolised and then it can activate its receptor for longer period of time.

Two anti – depressant drugs are:

i.)   Iproniazid.

ii.) Phenelzine

9 How do antiseptics differ from disinfectants? Give one example of each.

Answer:

Antiseptic are applied to wounds, cuts, diseased skin surfaces or we can simply say that applied on living tissues. Ex-Bithionl(bithional) used in soaps to provide antiseptic also dettol the most famous one is an antiseptic mixture of chloroxylenol and terpineol. Whereas Disinfectant are applied to objects that we usually use or we can say inanimate object like floor, instruments, toys etc. Ex-Chlorine in the concentration of 0.2 to 0.4ppm in aq. Solution and sulphur dioxide in very low concentration.

Sometime disinfectant can act as antiseptic by varying there concentration. Ex-0.2% solution of phenol is an antiseptic while it’s 1% solution is disinfectant.

10 Why are cimetidine and ranitidine better antacids than sodium hydrogencarbonate or magnesium or aluminium hydroxide ?

Answer:

Antacids such as sodium hydrogen carbonate, magnesium hydroxide, and aluminium hydroxide work by neutralising the excess hydrochloric acid present in the stomach. However, the root cause for the release of excess acid remains untreated.

Cimetidine and rantidine are better antacids as they control the root cause of acidity. These drugs prevent the interaction of histamine with the receptors present in the stomach walls. Consequently, there is a decrease in the amount of acid released by the stomach. This is why cimetidine and rantidine are better antacids than sodium hydrogen carbonate, magnesium hydroxide, and aluminium hydroxide.

11 Name a substance which can be used as an antiseptic as well as disinfectant.

Answer:

Phenol can be used as an antiseptic as well as disinfectant. 0.2 % solution of phenol is used as an antiseptic, while 1% of its solution is used as an disinfectant.

Frequently asked questions on NCERT Solutions for Class 12 Chemistry Chapter 16

1. What are the Important Topics in Chapter 16 Everyday Chemistry?

Ans. Everyday Chemistry typically deals with the application of chemicals and chemical processes in everyday life. The chapter also elaborates on drugs and its classifications. The important subtopics for these chapter are:

• Drugs and their classification.
• Drug target interaction.
• The therapeutic action of various drug classes.
• Chemicals in foods.
• Cleansing agents.

Apart from these topics related to pharmacological classification, the function of enzymes, the process of inhibitors, and receptors are also crucial for the final term exam. Students should also learn about various drugs like antacids, neurologically active drugs, antihistamines to attempt short and very short questions from this section.

2. What are some Important Questions from Chapter 16 Everyday Chemistry?

Ans. Some of the important questions from everyday Chemistry for students appearing in boards are:

• Why does soap not work hard?
• Explain the terms Cationic, Anionic, and Non-ionic detergent in detail with example.
• Why are synthetic detergents better than soaps?
• What is the tincture of iodine? What is the use?
• Name a substance that can be used as an antiseptic as well as a disinfectant?
• What is meant by the term broad-spectrum antibiotics? Explain.

3. What are the topics covered in NCERT Solution for Everyday Chemistry?

Ans. The NCERT solution for everyday Chemistry covers all major topics related to chemical applications and the classification of drugs. The topics related to cleansing agents, chemicals in food, etc. are delved in detail. The subtopics like functions of the enzymes, the process of inhibitors, receptors are explained in detail with examples and good illustrations.

Also, questions related to various drugs like antacids, neurologically active drugs, antihistamines, antimicrobials, infertility drugs are answered with immense clarifications. Significantly the NCERT Solutions deal with all these topics in two ranges of questions. The first section answers all the NCERT questions and the second section answers the In-text questions for better understanding.

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