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Published on: 08/10/2019
Chemistry in Everyday Life
Download CBSE Class 12th Standard CBSE Chemistry question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Chemistry
Questions + Answers key
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1.
Radha is a house wife, her husband Mohan works in a office. She wanted to prepare some halwa for him. Mohan is diabetic. She does not want to add sugar to halwa.
(i) As a student of chemistry suggests a suitable artificial sweetener to Radha.
(ii) What values are associated with the above decision?
2.
One of the major gifts of civilisation is the stress. In the mad race to earn more money and to buy more comforts, we have added stress to our life.we do not have proper sleep and this leads to many disorders and diseases. We have to take sleeping pills from time to time.
(i) What is the chemical name of sleeping pills?
(ii) How do they help in reducing stress?
(iii) How are tranquillizers helpful?
(iv) If we still take sleeping pills, then which value do we lack?
3.
Analgesics are the chemical substances which give relief to the body pains and act on our nervous system. These are of two types: narcotics and nonnarcotics. Whereas the former lead to addiction and are highly toxic, the later are not.
(i) Name a substance which can act both as analgesic and antipyretic as well.
(ii) What is its IUPAC name?
(iii) How does it help heart patients?
(iv) What precautions must be taken while taking it?
4.
Analgesics are the chemical substances which give relief to the body pains and act on our nervous system. These are of two types: narcotics and nonnarcotics. Whereas the former lead to addiction and are highly toxic, the later are not.
(i) Name a substance which can act both as analgesic and antipyretic as well.
(ii) What is its IUPAC name?
(iii) How does it help heart patients?
(iv) What precautions must be taken while taking it?
5.
Ankit's grandfather is not only obese but he is also a diabetic patient. Seeing his fondness for sweets, Ankit suggested him to replace sugar with artificial sweeteners. After few days, Ankit observed a controlled level to sugar in his grandfather. Answer the following:
(i) What are the values displayed by Ankit?
(ii) What are artificial sweeteners?
(iii)Give two examples of artificial sweeteners.
(iv) Name an artificial sweetener which is unstable at cooking temperature.
6.
On the occasion of world health day, Dr. Satpal organized a 'Health Camp' for poor farmers living in a near village. After check up, he was shocked to see the most of the farmers suffered from cancer due to regular exposure to pesticides and many were diabetic. They distributed free medicines to them. Dr. Satpal immediately reported the matter to the National Human Right Commission (NHRC). On the suggestion of NHRC, the government decided to provide medical care, financial assistance, setting up of super-speciality hospitals for treatment and prevention of the deadly disease in the affected villages all over India.
(i) Write the values shown by :
(a) Dr. Satpal
(b) NHRC
(ii) What type of analgesics are chiefly used for the relief of pains of terminal cancer?
(iii) Give an example of artificial sweetener that could have been recommended to diabetic patients.
7.
Mr. Roy, the principal of one reputed school organized a seminar in which he invited parents and principals to discuss the serious issue of diabetes and depression in students. They all resolved this issue by strictly banning the junk food in schools and to introduce healthy snacks and drinks like soup, lassi, milk etc. in school canteens. They also decided to make compulsory half an hour physical activities for the students in the morning assembly daily. After six months, Mr. Royconducted the health survey in most of the schools and discovered a tremendous improvement in the health of students.
After reading the above passage, answer the following:
(i)What are the values (at least two) displayed by Mr.Roy?
(ii) As a student, how can you spread awareness about this issue?
(iii) What are tranquillizers? Give an example.
(iv)Why is use of aspartame limited to cold foods and drinks?
8.
Ramesh went to a department store to purchase groceries, On one of shelves he noticed sugar-free tablets, He decided to buy them for his grandfather who was a diabetic. There was three types of sugar-free tablets, Ramesh decided to buy sucralose which was good for his grandfather's health.
(i) Name another sugar-free tablet which Ramesh did not buy,
(ii) Was it right to purchase such medicines without doctor's prescription?
(iii)Wha is quality of Ramesh is reflected above?
9.
Due to hectic and busy schedule, Mr. Angad made his life full of tensions and anxiety. He started taking sleeping pills to overcome the depression without consulting the doctor. Mr. Deepak, a close friend of Mr. Angad, advised him to stop taking sleeping pills and and suggested to change his lifestyle by doing yoga, meditation and some physical exercise. Mr. Angad followed his friend's advice and after few days he started feeling better. After rearing the above passage, answer the following:
(i) What are the values (at least two) displayed by Mr. Deepak?
(ii) Why is it not advisable to take sleeping pills without consulting doctor?
(iii) What are tranquilizers? Give two examples.
10.
Due to hectic and busy schedule, Mr. Singh started taking junk food in the lunch break and slowly became habitual of eating food irregularly to excel in his field. One day during meeting he felt severe chest pain and fell down. Mr. Khanna, a close friend of Mr. Singh took him to doctor immediately. The doctor diagnosed that Mr. Singh was suffering from acidity and prescribed some medicines. Mr. Khanna advised him to eat home made food and change his lifestyle by doing yoga, meditation and some physical exercise. Mr. Singh followed his friend's advice and after few days he started feeling bener.
After reading the above passage, answer the following:
(i) What are the values (at least two) displayed by Mr. Khanna?
(ii)What are antacids? Give one example.
(iiii)Would it be advisable to take antacids for a long period of time? Give reason
1.
(i) Suitable artificial sweeteners which can be added in cooking is sucrolose.
(ii) Values associated with the above decision are:
(a) Knowledge of chemistry put to use.
(b) Love for her husband.
(c) Concern for the health of her husband.
2.
(i) The sleeping pills contain the chemical substances known as tranquillizers.
(ii) These help in accelerating the signal sending capacity of the neurotransmitters.
(iii) The tranquillizers give relief from the stress and are also sleep inducing they help in controlling our blood pressure as well as anxiety. However, the frequent use of these is quite harmful.
(iv) Ignorant, careless about health.
3.
(i) It is called aspirin.
(ii) Its IUPAC name is 2-acetoxy benzoic acid.
(iii) It checks blood from getting thick which leads to heart problems.
(iv) In our body, aspirin gets hydrolyzed into salicylic acid which can cause gastric irritation in man and sometimes lead to bleeding from stomach. Preferably it must not be taken empty stomach.
4.
(i) It is called aspirin.
(ii) Its IUPAC name is 2-acetoxy benzoic acid.
(iii) It checks blood from getting thick which leads to heart problems.
(iv) In our body, aspirin gets hydrolyzed into salicylic acid which can cause gastric irritation in man and sometimes lead to bleeding from stomach. Preferably it must not be taken empty stomach.
5.
(i) Caring, concerned, helpful (or any other two values)
(ii) Artificial sweeteners are the chemical compounds which give sweetening effect to the food, enhances its odour and flavour and is used as a substitute of sugar due to its low-calorie intake.
(iii) Sucrolose/Aspartame/Alitarne
(iv) Aspartame.
6.
(i) (a) Dr. Satpal displayed values like willingness to helps, concern, acute intelligence etc.
(b) NHRC displayed values like helping people, ensure right to people, social responsibility etc.
(ii) Narcotic analgesics like morphine in limited dose are chiefly used for the relief of pains of terminal cancer.
(iii) Saccharin could have been recommended.
7.
(i) Awareness about health. Discussion by mutual understanding.
(ii) We can spread awareness about these issues by organizing seminars or discussions with the other people.
(iii) Tranquilizers are chemical substances used for the treatment of mental diseases and tensions. e.g., Barbituric acid, veronal etc
(iv) Aspartame is unstable at higher temperature. Thus, its use is limited to cold foods and drinks.
8.
(i) Aspartame, Saccharin (anyone).
(ii) No.
9.
(i) Aware, concerned or any other correct two values.
(ii) It is not advisable to take sleeping pills without consulting doctor because it may have various side effects on the body and unknown health problems.
(iii) TranquiIizers are the drugs which act on CNS and help in reducing anxiety and mental tension are called as tranquilizers. Example: Valium, equanil (or any other example)
10.
(i) Friendly, caring nature, supportive and has good awareness towards health. (Any two)
(ii) Antacids are the chemical substances which neutralize excess acid in the gastric juices and give relief from acid indigestion, heart bums, acidity and gastric ulcers. e.g., Histamine, Ranitidine, Cimetidine.
(iii) It is not advisable to take antacids for a long time as they control only symptoms and not the cause. Therefore, the patients cannot be treated easily and completely through them. The production of more acid They may also lead to.
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