CBSE Class 12 Chemistry HOTs Chemistry in Everyday Life

Please refer to CBSE Class 12 Chemistry HOTs Chemistry in Everyday Life. Download HOTS questions and answers for Class 12 Chemistry. Read CBSE Class 12 Chemistry HOTs for Unit 16 Chemistry in Everyday Life below and download in pdf. High Order Thinking Skills questions come in exams for Chemistry in Class 12 and if prepared properly can help you to score more marks. You can refer to more chapter wise Class 12 Chemistry HOTS Questions with solutions and also get latest topic wise important study material as per NCERT book for Class 12 Chemistry and all other subjects for free on Studiestoday designed as per latest CBSE, NCERT and KVS syllabus and pattern for Class 12

Unit 16 Chemistry in Everyday Life Class 12 Chemistry HOTS

Class 12 Chemistry students should refer to the following high order thinking skills questions with answers for Unit 16 Chemistry in Everyday Life in Class 12. These HOTS questions with answers for Class 12 Chemistry will come in exams and help you to score good marks

HOTS Questions Unit 16 Chemistry in Everyday Life Class 12 Chemistry with Answers

 

VERY SHORT ANSWER TYPE QUESTIONS 

Question. Write the formula and IUPAC name of aspirin.
Answer.
Chemistry in Everyday Life 3


Question. Name the type of drugs having following structural formula :
Chemistry in Everyday Life 4
Answer. Sulpha drugs


Question. Name two types of the drugs classified on the basis of pharmacological effect.
Answer. Analgesics, Antiseptics.


Question. What is the role of Bithional in toilet soaps ?
Answer. To impart antiseptic properties to soaps.


Question. Why is sodium benzoate added to packed containers of jams and pickles ?
Answer. It prevents spoilage of jams and pickles due to microbial growth. It is a food preservative.


Question. Why the receptors embedded in cell membranes show selectivity for one chemical messenger over the other ?
Answer. The active site of receptor has specific shape and specific functional groups which can bind only specific messenger which fits in.


Question. With reference to which classification has the statement ‘Ranitidine is an antacid’ been given ?
Answer. Classification based on pharmacological effect.


Question. Give the name of medicine used for the treatment of syphilis.
Answer. Salvarsan.


Question. Give the composition of tincture of iodine.
Answer. 2-3% solution of iodine in alcohol-water mixture.


Question. How does aspirin act as analgesic ?
Answer. Aspirin inhibits the synthesis of prostaglandins which cause pain.


Question. Name the antiseptic agents present in dettol.
Answer. Chloroxylenol and Terpinol.


Question. What precaution should be taken before administrating penicillin to a patient ?
Answer. To confirm beforehand that the patient is not allergic to penicillin.


Question. Explain why aspirin finds use in prevention of heart attacks ?
Answer. Due to anti blood clotting activity.


Question. Mention one use of drug meprobamate.
Answer. Antidepressant drug.

 

SHORT ANSWER-I TYPE QUESTIONS

Question. What are antihistamines ? Give two examples.
Answer. The group of compounds which destroy histamine produced in the body by allergens. E.g., Bromopheniramine, seldane.


Question. What are narcotic and non-narcotic analgesics ? Give one example of each.
Answer. Non-narcotics are the drugs which relieve or decrease pain without causing unconsciousness. Example, Aspirin.
Nartotics analgesics are those drugs which relieve pain, but produce sleep and unconsciousness. Example, Morphine.


Question. Explain the following terms as used in medicinal chemistry :
(i) Target molecules (ii) Enzyme inhibitors
Answer. (i) Drugs that interact with biomolecules such as lipids, carbohydrates, proteins and nucleic acids, are called target molecules.
(ii) They inhibit the catalytic activity of the enzyme.


Question. Give one important use of each of the following :
(i) Equanil (ii) Morphine
Answer. (i) Tranquilizer (antidepressant).
(ii) Narcotic analgesics


Question. What are neurologically active drugs ? Give two examples.
Answer. Tranquilizers and analgesics are neurologically active drugs. Example : Equanil, morphine.


Question. (i) What are antibiotics ?
(ii) What is meant by the term broad spectrum antibiotic ?
Answer. (i) A substance produced wholly or partly by chemical synthesis which in low concentration inhibits the growth or destroys microorganism by interfering with their metabolic processes.
(ii) Antibiotics which kills or inhibits wide range of bacteria.


Question. From the given examples – ciprofloxacin, phenelzine, morphine, ranitidine – choose the drug used for :
(i) treating allergic conditions (ii) to get relief from pain
Answer. (i) Ranitidine (ii) Morphine


Question. Why a drug should not be taken without consulting a doctor ? Give two reasons.
Answer. (i) To avoid side effects caused by drug.
(ii) To have the advice for proper dose of drug.


Question. State the main difference between bacteriostatic and bactericidal antibiotics.
Give one example of each.
Answer. Bacteriostatic antibiotics have inhibitory effect while bactericidal antibiotics have killing effect on microbes.
Example : Bacteriostatic antibiotic : Tetracycline Bactericidal antibiotic : Ofloxacin


Question. What are antifertility drugs ? Name the constituents of an oral contraceptive.
Answer. Drugs used to check pregnancy in women to control birth rate. Oral contraceptives contains a mixture of synthetic estrogen and progesterone derivatives.

 

SHORT ANSWER-II TYPE QUESTIONS

Question. (i) Why are artificial sweetening agents harmless when taken ?
(ii) Name one such artificial sweeting agent.
(iii) Why is the use of aspartame as an artificial sweetener limited to cold foods ?
Answer. (i) Because they are not metabolized by body and excreted from the body in urine unchanged.
(ii) Aspartame.
(iii) Because it is unstable at cooking temperature.


Question. Pick out the odd one amongst the following on the basis of their medicinal properties. Give suitable reason :
(i) Luminal, seconal, terfenadine, equanil.
(ii) Chloroxylenol, phenol, chloamphenicol, bithional.
(iii) Sucralose, aspartame, alitame, sodium benzoate.
Answer. (i) Terfenadine is antihistamine other three are used as tranquilizers.
(ii) Chloramphenicol is a broad spectrum antibiotic. Other three have antiseptic properties.
(iii) Sodium benzoate is a food preservative. Other three are artificial sweetners.


Question. Give the main function of following in the body of human beings :
(i) Enzymes
(ii) Receptor proteins
(iii) Neurotransmitter
Answer. (i) Catalyse biochemical reactions.
(ii) Important for the communication system of the body.
(iii) They control mood changes in organisms.


Question. Identify the class of drug :
(i) Phenelzine (Nardin)
(ii) Aspirin
(iii) Cimetidine
Answer. (i) Antidepressant drug (ii) Analgesics and antipyretic
(iii) Antihistamine


Question. Give the pharmacological function of the following type of drugs :
(i) Analgesics (ii) Tranquilizers (iii) Antifertility drugs
Answer. (i) Which reduce or abolish pain.
(ii) They are neurologically active drugs used to treat mental diseases.
(iii) Drugs used to check pregnancy in women to control birth rate.

 

More Questions.

 

1 MARK QUESTIONS

 
Q. 1. Give an example of a chemical substance which can act both as an antiseptic and disinfectant.
Answer. Phenol. 

Q. 2. What is the chemical name of antiseptic chloroxylenol ?
Answer. 4-Chloro-3, 5-dimethyl phenol. 

Q. 3. Which alkaloid is used to control hypertension ?
Answer. Reserpine. 

Q. 4. Which alkaloid is used to treat malaria ?
Answer. Quinine.
 
Q. 5. Identify the following :
 
CBSE_Class_12_Chemistry_Everyday_Life_Set_A_1
Q. 7. Which artificial sweetner has the lowest sweetness value ?
Answer. Aspartame. 

Q. 8. Which artificial sweetner has the highest sweetness value ?
Answer. Alitame. 

Q. 9. What kind of a drug is Chlorpheniramine maleate ?
Answer. Anti histamine drug. 

Q. 10. What is the chemical name of aspirin ?
Answer. 2-Acetoxy benzoic acid.
 
Q. 11. Name the antibacterial present in toothpaste.
Answer. Triclosan. 

Q. 12. Identify the drug :
CBSE_Class_12_Chemistry_Everyday_Life_Set_A_2
Answer. Penicillin G.
 
Q. 13. Which antibiotic contains NO2 group attached to aromatic nucleus in its structure ?
Answer. Chloramphenicol. 

Q. 14. What is the use of barbituric acid ?
Answer. Tranquilizer.
 

Q. 15. Name one analgesic drug which is also used to prevent heart attacks.
Answer. Aspirin. 

Q. 16. What is the application of the following molecule in everyday life ?
CBSE_Class_12_Chemistry_Everyday_Life_Set_A_3
Answer. It is a detergent.
 
Q. 17. Give an example of a drug that is antipyretic as well as analgesic.
Answer. Paracetamol. 

Q. 18. Out of morphine, N-Acetyl-para-aminophenol, Diazepam and tetrahydrocatenol, which can be used as analgesic without causing addiction ?
Answer. N-Acetyl-para-aminophenol. 

Q. 19. Name a sugar substitute which is 160 times as sweet as surcrose.
Answer. Aspartame. 


2 MARKS QUESTIONS
 
Q. 1. When a mixture of salicylic acid, acetic anhydride and acetic acid is refluxed, what is the product obtained and what is its use in everyday life ?
Answer. Aspirin used as analgesic. 

Q. 2. Distinguish between a narrow spectrum and broad spectrum antibiotic.
Answer. A narrow spectrum antibiotic works against a limited range of microbes whereas a broad spectrum antibiotic works against a large variety of microbes. 

Q. 3. What is Salvarson ? To which class of drugs does it belong ? For what distance is it used ?
Answer. Antimicrobial agent.
Used for the treatment of STD called Syphilis. 

Q. 4. How does apirin act as an analgesic ?
Answer. It inhibits the synthesis of prostaglandins which stimulates inflammation of the tissue and cause pain. 

Q. 5. What are barbiturates ? To which class of drugs do they belong ?
Answer. 5, 5-derivatives of barbituric acid are called barbiturates. They belong to the class of tranquilizers. They also act as sleep producing agents. Eg. Luminal, Veronal. 

Q. 6. What is tincture iodine ? What is its use ?
Answer. Alcoholic Solution of I2.Used as an antiseptic. 

Q. 7. To what class of medicines does chloramphericol belong ? For what disease can it be used ?
Answer. Broad spectrum antibiotic Used to cure typhoid, dysentry, acute fever. 

Q. 8. Pick the odd one amongst the following on the basis of their medicinal properties mentioning the reason.
(i) Luminal, seconal, phenacetin, equanil
(ii) Chloroxylenol, phenol, chlorampherical, bithional
Answer. (i) Phenacetin is an antipyretic while all the rest are tranquilisers.
(ii) Chlorampherical is an antibiotic while all the remaining are antiseptics.
 
Q. 9. Why is bithional added to soap ?
Answer. Acts as an antiseptic and reduces the odours produced by bacterial decomposition of organic matter on the skin. 

Q. 10. Why are cimetidine or ranitidine better antacids than sodium bicarbonate or magnesium or aluminium hydroxide ?
Answer. If excess of NaHCO3 or Mg (OH)2 or Al (OH)3 is used, it makes the stomach alkaline and thus triggers the release of even more HCl. In contrast, cimetidine or ranitidine prevent the interaction of histamine with the receptor cells in the stomach wall and thus release lesser amount of HCl. 

Q. 11. Why is the use of aspartame limited to cold foods and drinks ?
Answer. It decomposes at baking or cooking temperatures and hence can be used only in cold foods and drinks. 

Q. 12. What problem arises in using alitane as artificial sweetener ?
Answer. It is a high potency artificial sweetener. Therefore it is difficult to control the sweetness of the food to which it is added. 

Q. 13. What is the purpose of adding antioxidants to food ? Give two examples of antioxidants.
Answer. They are added to prevent oxidation of fats and oils present in food thus preventing food from becoming rancid.
Eg. BHA (Butylated hydroxy anisole)
BHT (Butylated hydroxy toluene)

 

VERY SHORT ANSWER TYPE QUESTIONS  

Question. Name the derivative of sucrose which tastes like sugar and can be safely used by weight conscious people.
Answer. Sucrolose.


Question. Why synthetic detergents are preferred over soaps for use in washing machines ?
Answer. They work well even with hard water and not form any scum.


Question. While antacids and antiallergic drugs interfere with the function of histamines,why do these not interfere with the function of each other ?
Answer. Antacids and antiallergic drugs bind to the different receptor sites.
Therefore, they do not interfere with the function of each other.


Question. Which of the following two compounds can be used as a surface agent and why ?
Answer. Compound (i) acts as a surface agent because its one end is hydrophobic while the other end is hydrophilic in nature.


Question. What type of drug is chloramphenicol ?
Answer. Bacteriostatic broad spectrum antibiotic.


Question. Name a chemical used as an antiseptic as well as disinfectant.
Answer. Phenol. (0.2% solution antiseptic and 1% solution disinfectant)


Question. Give two examples of antidepressants.
Answer. Iproniazid, Phenelzine.


Question. Name the antioxidants commonly used to increase the storage of butter.
Answer. BHA (Butylated Hydroxy anisole).


Question. Give the name of medicine having – As = As – linkage.
Answer. Arsphenamine.


Question. Which antibiotic is supposed to be toxic towards certain strains of cancer cells ?
Answer. Sulphite.


Question. Name one antioxidant used in wine, butter and beers.
Answer. BHA, BHT.


Question. Hair shampoos belong to which class of synthetic detergent ?
Answer. They belong to cationic detergents. E.g., Cetyltrimethyl-ammonium bromide.


Question. Dishwashing soaps are synthetic detergents. What is their chemical nature ?
Answer. They are non-ionic detergents. E.g., Polyethylene glycol-stearate.


Question. What is the cause of a feeling of depression in human beings ? Name a drug
which can be useful in treating depression.
Answer. Low level of noradrenaline, a neurotransmitter causes depression in human beings. Antidepressant drugs are Iprniazid, Phenelzine.


Question. How is acidity cured with cimetidine or ranitidine ?
Answer. Cimetidine or Ranitidine prevents the interaction of histamine with the receptors present in stomach walls and therefore, secretion of acid is prevented.

 

SHORT ANSWER-I TYPE QUESTIONS 

Question. What do you mean by non-biodegradable detergents ? How can we make biodegradable detergents ?
Answer. Detergents which cannot be degraded by nature. Biodegradable detergents can be prepared by minimising the branching of the hydrocarbon chain, as unbranched chains can be biodegraded.


Question. If water contains dissolved calcium hydrogencarbonate, which out of soap and detergent, will you prefer to use ? Why ?
Answer. We will use detergent because it will not form insoluble precipitate with Ca2+.


Question. What are barbiturates ? What is the action of barbiturates on human body ?
Answer. Barbaturic acid derivatives are called barbiturates. They are hypnotic (sleep inducing agents and tranquilizers e.g., valium, serotonin).


Question. Write the structures of soaps obtained by the hydrolysis of the following fats :
(i) (C15H31COO)3C3H5 Glyceryl palmitate
(ii) (C17H33COO)3C3H5 Glyceryl oleate
Answer. (i) C15H31COONa+ (ii) C17H33COONa+


Question. What are antagonists and agonists ?
Answer. Drugs which bind to the receptor site and inhibits its natural function. They are useful when blocking of message is required.
Agonists are the drugs which imitate (mimic) the natural messenger by switching on the receptor. They are useful when there is lack of natural chemical messenger.


Question. What is the advantage of using antihistamines over antacids in the treatment of acidity ?
Answer. Antihistamines prevent the interaction of histamine with the receptors present in stomach wall and thus lesser amount of HCl is released.


Question. Write two side effects of Aspirin.
Answer. (i) It is toxic to liver.
(ii) It also causes bleeding from stomach sometimes, thus it is a gastric irritant.


Question. What are sulpha drugs ? Give two examples.
Answer. A group of drugs which are derivatives of sulphanilamide and are used in place of antibiotics is called sulpha drugs. E.g., sulphadiazine, sulphanilamide.


Question. What forces are involved in holding the active sites of enzymes ?
Answer. The forces involved in holding the active sites of enzymes are hydrogen bonding, ionic bonding, dipole-dipole attractions or van der Waal’s forces of attraction.

 

SHORT ANSWER-II TYPE QUESTIONS

Question. Give the name of medicine used in the treatment of following diseases :
(i) Typhoid (ii) Join pain (in Arthritis)
(iii) Hypertension
Answer. (i) Antibiotics (ii) Non-narcotic analgesics (iii) Tranquilizers


Question. Give the class of drugs to which these substances belong :
(i) Bithional (ii) Amoxycillin (iii) Salvarsan
Answer. (i) Antiseptic (ii) Broad spectrum antibiotic
(iii) Antimicrobial (antibacterial)


Question. How are antiseptics different from disinfectants ? How does an antibiotic different from these two ? Give one example of each of them.
Answer. Antiseptics may kill or stop the growth of microbes and safe for living tissues, where an disinfectants kill microbes but not safe for living tissues. While antibiotic are produced by micro-organism, can inhibit the growth of other microorganism.
Example : Antiseptic : 0.2% phenol, Disinfectant : 1% phenol, Antibiotic : Penicillin


Question. Explain the following terms with suitable examples :
(i) Cationic detergents
(ii) Anionic detergents
(iii) Non-ionic detergents
Answer. (i) Those in which cationic part of the molecule is involved in cleansing action. E.g., cetyltrimethyl ammonium bromide.
(ii) Those in which anionic part of the molecule is involved in cleansing action. E.g., sodium laurylsulphate.
(iii) Which do not contain any ion in their constitution. E.g., Lauryl alcohol ethoxylate.


Question.Classify the following as cationic detergents, anionic detergents or non-ionic detergents :
Chemistry in Everyday Life 5

Answer. (i) Anionic detergent (ii) Cationic detergent
(iii) Non-ionic detergent


Question. How do enzyme inhibitors work ? Distinguish between competitive and noncompetitive enzyme inhibitors.
Answer. An enzyme inhibitor either blocks the active site of enzyme or changes the shape of the active site by binding at an allosteric site. They are of two types :
(i) Competitive enzyme inhibitor competes with natural substance for their attachment on the active sites of enzymes.
(ii) Non-competitive enzyme inhibitor binds at allosteric site and changes the shape of the active site in such a way that the substrate cannot recognize it.

 

More Questions.

1 - MARK QUESTIONS
 
1.How does aspirin helps in removing pain?
 
2. Baby soaps are soft soaps, write its chemical constituents.
 
3. Write the use of chloro-xylenol.
 
4. A child when dropped his soap into a bathing tub, the soap did not sink but was floating. Suggest the method of manufacturing of the soap.
 
5. A patient tested to have gram positive bacterial infection. What type of antibiotic the physician might have prescribed to the patient ? Justify.
 
6. All residents of a village are found to suffer from an unknown disease. What type of antibiotic may be administered to the sufferers.
 
7. Write the application of following molecule in daily life
 
8. What problem arises in using alitame as artificial sweetener?
 
9. Why detergents are not biodegradable?
 
10. Why cationic detergents have limited use?
 
 
2 – MARKS QUESTIONS
 
11. Pick up the odd one among the following on the basis of medicinal properties mentioning the reason.
a. Luminal, seconal, phenacetin, equanil.
b. Chloroxylenol, phenol, chloroamphenicol, bithional.
 
12. Write the type and name of the detergent used in hair conditioner.
 
13. How can you overcome the problem of premature ageing by specific intake of food items. Name some food items that slows down the ageing process. Explain how they act ?
 
14.a) Why aspartame cannot be used in cooked foods ?
b) Which type of people take artificial sweetening agents and why?
 
15.a.Soframycine is an antiseptic and not disinfectant. Give reason.
b.If water contains dissolved calcium bicarbonate, out of soaps or detergents, which one will you choose for cleaning clothes?
 
16.a.Boric acid is a weak antiseptic than tincture of iodine. Give reason.
b. Tincture of iodine is preferred over iodoform as antiseptic. Why?
 
 
3 – MARKS QUESTIONS
 
17. Low level of noradrenaline is the cause of depression. What type of drugs are needed to cure this problem? Name two drugs.
 
18. While antacids and antiallergic drugs interfere with the function of histamines, why do these not interfere with the function of each other? Explain.
 
19. Account for the following
i. Aspirin drug prevents heart attacks
ii. Diabetic patients are advised to take artificial sweeterns instead of natural sweeteners.
iii. Detergents are nonbiodegradable while soaps are biodegradable.
 
20. How synthetic progesterone derivatives act as antifertility drugs. Explain and mention two commonly available drugs in the market.

 

1 Mark Question

1) Which among the following is a semi synthetic modification of penicillin

Erythromycin, ampicillin, tetracycline, ofloxacin.

2) Substances produced wholly or partly by chemical synthesis, which in low concentrations inhibits the growth or destroys microorganisms by intervening in their metabolic processes.  Identify the substance.

3) Drugs are classified as

Aspirin                               –              analgesic

Chlordiazepoxide                –              tranquilizer

Penicillin                            –              antibiotic

Mention on what basis the above classification is done?

 

CBSE_Class_12_Chemistry_Everyday_Life_Set_C_1

Identify the type of detergent given in the above structure.
 
5) Which of the following drug combinations is not correct and state why?
Chloramphenicol             –                broad spectrum antibiotic.
Equanil                          –                           sedative.
Phenacetin                     –                          antipyretic.
Bithional                        –                         tranquilizer.
 
2 Mark Questions
 
6) Analysis of water in a place shows that the water contains Magnesium Chloride. The people in that place are advised to use detergents for washing clothes. Why?
 
7) Pick out the odd one from the following and mention why? Erythromycin, penicillin, tetracycline, chloramphenicol
 
8) Antiallergics and antacids are antihistamines. Can antiallergics be used to reduce the acidity of the stomach? Give plausible reason for your answer.
 
9) Following drugs are used as analgesics. One among them is different from others. Identify it and state the reason.
Morphine, Heroin, Aspirin, Codeine.
CBSE_Class_12_Chemistry_Everyday_Life_Set_C_2
11) Birth control pills essentially contain a mixture of synthetic estrogen and progesterone. What are estrogen and progesterone? Why are they used in birth control pills?
 
12) Sodium and Potassium soaps are only used for cleaning purposes. Why?
 
13) Detergents containing unbranched chains are more preferable than those containing branched chains. State the reason.
 
14) Low level of noradrenalin is the cause of depression. Suggest drugs to cure this problem?
CBSE_Class_12_Chemistry_Everyday_Life_Set_C_3
17) Sodium hydrogen carbonate and ranitidine are used as antacids. Which one is a better choice? Why?
 
18) Identify the following substances:
i. It is about 550 times as sweet as cane sugar and excreted from body in urine unchanged.
 
ii. It is 100 times as sweet as cane sugar and its use is limited to cold food and soft drinks as it is unstable at cooking temperature.
 
iii. It is a trichloro derivative of Sucrose and it is stable at room temperature.

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