NEET Chemistry: Chemistry in Everyday Life questions with solutions

Q1. Water plays an important role in :

1. hydrological cycle
2. water cycle
3. both A and B
4. none of above

Answer: both A and B

The hydrological cycle and the water cycle are two names for the same process: the circulation of water through evaporation, condensation, precipitation, and runoff. Since water is central to that process, the correct choice includes both.

Q2. \( S O_{2} \) and \( C l_{2} \) both are used as bleaching agent. Factors that cause bleaching are respectively:

1. \( H \) (that causes reduction), \( O \) (that causes oxidation)
2. \( O \) (that causes reduction), \( H \) (that causes oxidation)
3. \( H \) (that causes oxidation), \( O \) (that causes reduction)
4. \( O \) (that causes oxidation), \( H \) (that causes reduction)

Answer: \( O \) (that causes oxidation), \( H \) (that causes reduction)

Chlorine bleaches by oxidation: in water it forms oxidizing species that destroy color. Sulfur dioxide bleaches by reduction: it reduces colored substances to colorless forms, so the factors are O for oxidation and H for reduction.

Q3. Bleaching powder is obtained by the interaction of \( C l_{2} \) with:

1. dilute solution of \( C a(O H)_{2} \)
2. concentrated solution of \( C a(O H)_{2} \)
3. dry Cao
4. dry slaked lime

Answer: dilute solution of \( C a(O H)_{2} \)

Bleaching powder (calcium oxychloride) is produced when chlorine reacts with dilute/slaked lime, where moisture allows the reaction to proceed. Dry CaO or concentrated calcium hydroxide are not the standard conditions for its preparation.

Q4. Which one of the following is employed as Antihistamine?

1. Chloramphenicol
2. Diphenylhydramine
3. Norethindrone
4. Omeprazole

Answer: Diphenylhydramine

Diphenylhydramine is an antihistamine used to treat allergies by blocking histamine receptors, while the other options serve different pharmacological purposes.

Q5. Which one of the following is employed as a tranquilizer drug?

1. Promethazine
2. Valium
3. Naproxen
4. Mifepristone

Answer: Valium

Valium is a well-known tranquilizer used to reduce anxiety and induce calmness, while the other options serve different medical purposes.

Q6. Which one of the following is employed as a tranquilizer?

1. Naproxen
2. Tetracycline
3. Chlorpheniramine
4. Equanil

Answer: Equanil

Equanil is a well-known tranquilizer used to treat anxiety and mental stress, while the other options are not tranquilizers.

Q7. Which one of the following can possibly be used as analgesic without causing addiction and mood modification?

1. Diazepam
2. Morphine
3. N-acetyl-para-aminophenol
4. Tetrahydrocannabinol

Answer: N-acetyl-para-aminophenol

N-acetyl-para-aminophenol, commonly known as paracetamol, is a non-narcotic analgesic that relieves pain without causing addiction or mood alteration, unlike the other options.

Q8. The liquified gas that is used in dry cleaning along with a suitable detergent is:

1. CO2
2. Water gas
3. Petroleum gas
4. NO2

Answer: CO2

Liquified CO2 is used in dry cleaning as an eco-friendly solvent along with detergents, replacing traditional organic solvents like perchloroethylene.

Q9. The constituent of the powerful explosive RDX is formed during the nitration of

1. Toluene
2. Phenol
3. Glycerol
4. Urotropine

Answer: Urotropine

RDX (Research Department Explosive) is chemically known as cyclotrimethylenetrinitramine and is synthesized by the nitration of urotropine (hexamethylenetetramine).

Q10. Which of the following is a cationic detergent?

1. Sodium stearate
2. Cetyltrimethyl ammonium bromide
3. Sodium dodecylbenzene sulphonate
4. Sodium lauryl sulphate

Answer: Cetyltrimethyl ammonium bromide

Cationic detergents are quaternary ammonium salts with a positive charge. Cetyltrimethyl ammonium bromide is a typical example of such a detergent.

Q11. The artificial sweetener stable at cooking temperature and does not provide calories is:

1. Alitame
2. Saccharin
3. Aspartame
4. Sucralose

Answer: Sucralose

Sucralose is a non-caloric artificial sweetener that remains stable at high cooking temperatures, making it suitable for cooking and baking.

Q12. Among the following, the narrow spectrum antibiotic is:

1. Penicillin G
2. Ampicillin
3. Amoxycillin
4. Chloramphenicol

Answer: Penicillin G

Penicillin G is a narrow-spectrum antibiotic as it is effective primarily against gram-positive bacteria, unlike the others which have broader activity.

Q13. Which of the following is an analgesic?

1. Novalgin
2. Penicillin
3. Streptomycin
4. Chloromycetin

Answer: Novalgin

Novalgin is an analgesic used to relieve pain, while the others are antibiotics used to treat infections.

Q14. Mixture of chloroxylenol and terpineol acts as:

1. Antiseptic
2. Antipyretic
3. Antibiotic
4. Analgesic

Answer: Antiseptic

Chloroxylenol and terpineol are commonly used in antiseptic formulations due to their ability to kill or inhibit the growth of microorganisms.

Q15. Bithionol is generally added to soaps as an additive to function as a/an:

1. Dryer
2. Buffering agent
3. Antiseptic
4. Softener

Answer: Antiseptic

Bithionol is added to soaps to provide antiseptic properties, helping to kill or inhibit the growth of microorganisms.

Q16. Artificial sweetener which is stable under cold conditions only is:

1. Saccharine
2. Sucralose
3. Aspartame
4. Alitame

Answer: Aspartame

Aspartame is known to be unstable at high temperatures and is suitable for use only under cold conditions, unlike other artificial sweeteners.

Q17. Antiseptics and disinfectants either kill or prevent growth of microorganisms. Identify which of the following statements is not true:

1. Chlorine and iodine are used as strong disinfectants.
2. Dilute solutions of Boric acid and Hydrogen Peroxide are strong antiseptics.
3. Disinfectants harm the living tissues.
4. A 0.2% solution of phenol is an antiseptic while 1% solution acts as a disinfectant.

Answer: Dilute solutions of Boric acid and Hydrogen Peroxide are strong antiseptics.

Dilute solutions of Boric acid and Hydrogen Peroxide are mild antiseptics, not strong ones. The other statements are correct.

Q18. Dettol is the mixture of:

1. Terpineol and Bithionol
2. Chloroxylenol and Bithionol
3. Chloroxylenol and Terpineol
4. Phenol and Iodine

Answer: Chloroxylenol and Terpineol

Dettol is a well-known antiseptic solution primarily composed of chloroxylenol and terpineol, which provide its disinfectant properties.

Q19. Chloramphenicol is an:

1. Antifertility drug
2. Antihistaminic
3. Antiseptic and disinfectant
4. Antibiotic-broad spectrum

Answer: Antibiotic-broad spectrum

Chloramphenicol is a broad-spectrum antibiotic used to treat bacterial infections by inhibiting protein synthesis in bacteria.

Q20. What is produced when urotropine reacts with concentrated nitric acid under fuming conditions, involving nitration of peripheral nitrogen atoms and oxidation of the inner bridge system?

1. Urotropine
2. Concentrated nitric acid
3. Cyclonite (RDX)
4. None of these

Answer: Cyclonite (RDX)

RDX is the product formed when urotropine reacts with fuming nitric acid, as described in the question. This makes option C correct.