Class 12 Chemistry MCQ Questions of Chemistry in Everyday Life with Answers helps you with analyzes your knowledge of the topics. The appropriate answers are likewise accommodated reference. Sarthaks eConnect had prepared based on the latest syllabus and examination pattern issued by CBSE.

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Practice MCQ Question for Class 12 Chemistry chapter-wise

1. Which of the following is used as tranquilizer?

(a) Naproxene
(b) Tetracycline
(c) Chlorpheniramine
(d) Equanil

2. Artificial sweetener which is stable only under cold conditions only is

(a) saccharine
(b) sucralose
(c) aspartame
(d) alitame

3. Bithional added to soap acts as

(a) buffering agent
(b) antiseptic
(c) softener
(d) drying

4. Mixture of chloroxylenol and terpineol acts as

(a) antiseptic
(b) antipyretic
(c) antibiotic
(d) analgesics

5. Drugs that bind to receptor site and inhibit its natural function are called

(a) antagonists
(b) agonists
(c) enzymes
(d) molecular targets

6. The artificial sweetener which contains chlorine that has the appearance and taste as that of sugar and is stable and cooking temperature:

(a) Aspartame
(b) Saccharin
(c) Sucralose
(d) Alitame

7. Bactericidal antibiotic among the following is

(a) ofloxacin
(b) erythromycin
(c) chloramphenicol
(d) tetracycline

8. Sodium benzoate is used as

(a) food preservative
(b) artificial sweetener
(c) antioxidant
(d) detergent

9. Allergy is caused by the production of in the body

(a) Hormones
(b) Enzymes
(c) Vitamins
(d) Histamines

10. Which of the following can possibly be used as analgesic without causing addiction and modification?

(a) Morphine
(b) Diazepam
(c) N-acety 1-para-aminophenol
(d) LSD

11. Heroin is

(a) Narcotic
(b) Non-narcotic
(c) Anaesthetic
(d) Antiseptic

12. Which one is a broad spectrum drug?

(a) Chloramphenicol
(b) Chloroquine
(c) Chloroxylenol
(d) Plasmoquine

13. A drug that is antiseptic as well as analgesic is

(a) Para acetamidophenol
(b) Chloropromazine hydrochloride
(c) Chloramphenicol
(d) Paracetamol

14. Chemotherapy is

(a) Use of heat for therapeutic effect
(b) Use of chemical for therapeutic effect
(c) Use of natural reagent for therapeutic effect
(d) All of these

15. Drugs which compete with natural substrate for their attachment on the active sites of enzymes are called

(a) Enzyme Inhibitors
(b) Competitive Inhibitors
(c) Non-competitive Inhibitors
(d) Drug targets

16. Drugs which interfere with natural action of histamine by competing with histamine are called

(a) Antidepressant
(b) Antihistamines
(c) Antimicrobial
(d) Antipyretic

17. Drugs which contain mixture of norethindrone and ethynylestradiol are

(a) Antibiotics
(b) Antifertility
(c) Antiseptic
(d) Antacid

18. Salvarsan is an antimicrobial agent which is used for curing

(a) Malaria
(b) Allergy
(c) Syphilis
(d) Depression

19. Tranquilizers are prescribed for curing

(a) Anxiety, stress, irritability
(b) The growth of microorganism
(c) Pain, Fever
(d) All of these

20. Tincture of iodine is

(a) Iodoform
(b) 100% Iodine
(c) 2-3% Iodine solution in alcohol-water
(d) Iodobenzene

21. Which of the following hormones is produced under the condition of stress which stimulates glycogenolysis in the liver of human being ?

(a) Thyroxin
(b) Insulin
(c) Adrenaline
(d) Estradiol

22. The human body does not produce :

(a) DNA
(b) Vitamins
(c) Hormones
(d) Enzymes

23. Among the following, the narrow-spectrum antibiotic is:

(a) chloramphenicol
(b) penicillin G
(c) ampicillin
(d) amoxicillin

24. Which one of the following is employed as a tranquilizer drug?

(a) Promethazin
(b) Valium
(c) Naproxen
(d) Mifepristone

25. Interferon is connected with

(a) tonic
(b) virus
(c) carbohydrate
(d) ore of iron

Answer:

1. Answer : (d) Equanil

Explanation : Meprobamate, which is sold as Equanil, is an anxiolytic carbamate analog. This was the best-selling mild tranquilizer for a time, which was eventually substituted by benzodiazepines because of their larger clinical index and reduced occurrence of harmful side effects.

2. Answer : (c) aspartame

Explanation : Aspartame is the only artificial sweetener which is stable at lower temperature and decomposes at higher temperature and also called Nutra sweet and relative sweetness value is 180.

3. Answer : (b) antiseptic

Explanation : Bithionol is generally added to the soaps as an additive to function as an antiseptic as it helps to reduce the odour produced by bacterial decomposition of organic matter on the skin. Bithionol is bis-dichlorophenol, and it is structurally similar to hexachlorophene.

4. Answer : (a) antiseptic

Explanation : Antiseptic medicine is used on the outer surface of the body part.Thus, the mixture of chloroxylenol and terpineol acts as antiseptic. Hence, the correct option for this question is A that is antiseptic.

5. Answer : (a) antagonists

Explanation : Drugs that bind to the receptor site and inhibit its natural function are called antagonists. These are useful when blocking of message is required.

6. Answer : (c) Sucralose

Explanation : The artificial sweetener containing chlorine that has the appearance and taste as that of sugar and is stable at cooking temperature is sucralose.Sucralose is derived from sugar through a multi-step patented manufacturing process that selectively substitutes three atoms of chlorine for three hydroxyl groups on the sugar molecule. This change produces a sweetener that has no calories, yet is 600 times sweeter than sucrose. 

7. Answer : (a) ofloxacin

Explanation : Ofloxacin, Penicillin, Aminoglycosides are bactericidal antibiotics. They kill bacteria. Tetracycline, Chloramphenicol and Erythromycin are bacteriostatic antibiotics. They inhibit growth of bacteria.

8. Answer : (a) food preservative

Explanation : Sodium benzoate is commonly used as a preservative in cosmetics and personal care items, such as hair products, baby wipes, toothpaste, and mouthwash . It also has industrial uses.

9. Answer : (d) Histamines

Explanation : Once the allergen binds to IgE, specific types of cells — including mast cells — will release chemicals that trigger the symptoms of the allergic reaction. Histamine is one of these chemicals. It causes the muscles in the airways and walls of the blood vessels to tighten.

10. Answer : (c) N-acety 1-para-aminophenol

Explanation : N- acetyl p-amino (paracetamol) can be used as analgesic without addition and modification.

11. Answer : (a) Narcotic

Explanation : Although some narcotics like codeine and morphine are legal if prescribed for pain relief, heroin is an illegal narcotic because it has dangerous side effects and is very addictive.

12. Answer : (a) Chloramphenicol

Explanation : The main examples of broad spectrum antibiotics in humans are tetracycline, ofloxacin and chloramphenicol. Chloramphenicol is found to be rapidly absorbed from the gastro-intestinal tract and hence can be given orally in case of typhoid, pneumonia and dysentery.

13. Answer : (a) Para acetamidophenol

Explanation :  Acetamidophenol is an antipyretic as well as analgesic drug. It lowers body temperature as well as is used to get relief from pain. It is commonly known by the name of paracetamol.

14. Answer : (c) Use of natural reagent for therapeutic effect

Explanation : Treatment that uses drugs to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. Chemotherapy may be given by mouth, injection, or infusion, or on the skin, depending on the type and stage of the cancer being treated.

15. Answer : (b) Competitive Inhibitors

Explanation : Drugs inhibit the attachment of substrate on active site of enzymes in different ways Drugs compete with the natural substrate for their attachment on the active sites of enzymes. Such drugs are called competitive inhibitors.

16. Answer : (b) Antihistamines

Explanation : Antihistamines are medicines often used to relieve symptoms of allergies, such as hay fever, hives, conjunctivitis and reactions to insect bites or stings. They're also sometimes used to prevent motion sickness and as a short-term treatment for insomnia.

17. Answer : (b) Antifertility

Explanation : An antifertility drug is a chemical substance which helps in suppressing the hormonal actions which promote fertility in women. These drugs reduce the chances of fertility by acting as protection.

18. Answer : (c) Syphilis

Explanation : Arsphenamine, also known as Salvarsan or compound 606, is a drug that was introduced at the beginning of the 1910s as the first effective treatment for syphilis and African trypanosomiasis. This organoarsenic compound was the first modern antimicrobial agent.

19. Answer : (a) Anxiety, stress, irritability

Explanation :  Benzodiazepines are prescribed to treat anxiety, insomnia, seizures, muscle spasms, agitation, alcohol withdrawal,stress, irritability and panic attacks.

20. Answer : (c) 2-3% Iodine solution in alcohol-water

Explanation : Tincture of iodine, iodine tincture, or weak iodine solution is an antiseptic. It is usually 2 to 7% elemental iodine, along with potassium iodide or sodium iodide, dissolved in a mixture of ethanol and water. Tincture solutions are characterized by the presence of alcohol.

21. Answer : (c) Adrenaline

Explanation : Adrenaline hormones in creases pulse rate and controls blood pressure. It releases glucose from liver glycogen and fatty acids from fats in emergency

22. Answer : (b) Vitamins

Explanation : The organic compounds other than carbohydrates, proteins which maintain normal growth and nutrition in the human body (but not produced in human body) are called vitamins.

23. Answer : (b) penicillin G

Explanation : Benzylpenicillin (Penicillin G) is a narrow spectrum antibiotic used for the treatment of susceptible bacterial infections.

24. Answer : (b) Valium

Explanation : Valium is a tranquilizer drug. It is mainly used to treat anxiety, insomnia, and symptoms of acute alcohol withdrawal. It acts by enhancing the effects of gamma-aminobutyric acid (GABA) in the brain.

25. Answer : (b) virus

Explanation : Interferon, any of several related proteins that are produced by the body's cells as a defensive response to viruses.

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