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NCERT Solutions Class 11 Chemistry Chapter 16 - Chemistry in Everyday Life
NCERT QUESTION - (Chemistry in Everyday Life)
Question 16.1: Sleeping pills are recommended by doctors to the patients suffering from sleeplessness but it is not advisable to take its doses without consultation with the doctor, Why?
Answer:- Most drugs when taken in doses higher than recommended may cause harmful effects and sometimes, may even lead to death. Hence, a doctor should always be consulted before taking any medicine.
Question 16.2: With reference to which classification has the statement, ‘ranitidine is an antacid” been given?
Answer:- The given statement refers to the classification of pharmacological effects of the drug. This is because any drug that is used to counteract the effects of excess acid in the stomach is called an antacid.
Question 16.3: Why do we require artificial sweetening agents?
Answer:- A large number of people are suffering from diseases such as diabetes and obesity. These people cannot take normal sugar i.e., sucrose as it is harmful for them. Therefore, artificial sweetening agents that do not add to the calorie intake of a person are required. Saccharin, aspartame, and alitame are a few examples of artificial sweeteners.
Question 16.4: Write the chemical equation for preparing sodium soap from glyceryl oleate and glyceryl palmitate. Structural formulae of these compounds are given below.
Answer:- (i)
(ii)
Question 16.5: Following type of non-ionic detergents are present in liquid detergents, emulsifying agents and wetting agents. Label the hydrophilic and hydrophobic parts in the molecule. Identify the functional group (s) present in the molecule.
Answer:-
Functional groups present in the molecule are:
(i) Ether, and
(ii) primary alcoholic group
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FAQs on NCERT Solutions Class 11 Chemistry Chapter 16 - Chemistry in Everyday Life
| 1. What is the importance of studying chemistry in everyday life? |  |
Ans. Chemistry is important in everyday life because it helps us understand the composition, properties, and reactions of substances that we encounter regularly. It enables us to make informed decisions about the products we use, understand the impact of chemicals on our health and the environment, and develop new technologies for various applications.
| 2. How does chemistry contribute to the development of medicines? | |
Ans. Chemistry plays a crucial role in the development of medicines. It involves the design, synthesis, and analysis of chemical compounds that can be used as drugs. Chemists study the structure-activity relationship of these compounds to understand their effectiveness and safety. They also develop methods for drug delivery, formulation, and dosage. Without chemistry, the discovery and development of life-saving medicines would not be possible.
| 3. What are the examples of chemistry in everyday life? | |
Ans. Chemistry is present in numerous aspects of our daily lives. Some examples include cooking (chemical reactions during food preparation), cleaning (use of detergents and solvents), personal care products (cosmetics, soaps), transportation (fuels and lubricants), agriculture (fertilizers and pesticides), and even the functioning of our bodies (biochemical reactions).
| 4. How does chemistry impact the environment? | |
Ans. Chemistry can have both positive and negative impacts on the environment. On one hand, it helps in the development of sustainable technologies, such as renewable energy sources and eco-friendly materials. On the other hand, improper use and disposal of chemicals can lead to pollution, contamination of water and soil, and harmful effects on ecosystems. Understanding the environmental impact of chemicals is essential for minimizing their negative consequences.
| 5. What are the potential risks associated with chemicals in everyday life? | |
Ans. Chemicals used in everyday life can pose various risks. Some chemicals, when used improperly, can be toxic or hazardous to human health. Exposure to certain substances can cause allergic reactions, skin irritations, respiratory problems, or even long-term health effects. It is important to be aware of the potential risks, follow safety guidelines, and use protective measures when handling chemicals.
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