Chemistry in Everyday Life Quiz - ICSE Class 12 Chemistry

Free practice quiz: Chemistry in Everyday Life (ICSE Class 12 Chemistry). 31 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This ICSE Class 12 Chemistry practice quiz has 31 multiple-choice questions on Chemistry in Everyday Life, and 31 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which of the following is NOT a common application of soaps and detergents in everyday life?

   1. Cleaning of fabrics
   2. Emulsification of oils in water for laundry
   3. Sterilization of medical equipment
   4. Removal of grease and grime from surfaces
   Show answer

   Answer: C. Sterilization of medical equipment

   Soaps and detergents are primarily used for cleaning due to their ability to emulsify oils and dirt. While some detergents might have mild antiseptic properties, sterilization of medical equipment requires more potent antimicrobial agents or physical methods like autoclaving. Soaps and detergents are not designed for this purpose.

2. Which of these compounds is a broad-spectrum antibiotic that inhibits bacterial protein synthesis by binding to the 30S ribosomal subunit?

   1. Penicillin
   2. Streptomycin
   3. Aspirin
   4. Paracetamol
   Show answer

   Answer: B. Streptomycin

   Streptomycin is an aminoglycoside antibiotic. Antibiotics like penicillin work by inhibiting bacterial cell wall synthesis, while aspirin and paracetamol are analgesics and antipyretics, not antibiotics. Streptomycin specifically targets the 30S ribosomal subunit in bacteria.

3. Which of the following is a major consequence of water pollution that can lead to eutrophication in water bodies?

   1. Increased dissolved oxygen levels
   2. Excessive growth of aquatic plants and algae
   3. Reduction in water temperature
   4. Decreased nutrient levels
   Show answer

   Answer: B. Excessive growth of aquatic plants and algae

   Eutrophication is caused by an excessive enrichment of water bodies with nutrients, typically nitrates and phosphates. This leads to rapid growth of algae and aquatic plants, which can then die and decompose, consuming dissolved oxygen and harming aquatic life.

4. The smell of ripe apples is mainly due to the presence of which class of organic compounds?

   1. Aldehydes
   2. Ketones
   3. Esters
   4. Ethers
   Show answer

   Answer: C. Esters

   Esters are known for their characteristic fruity and floral odors. Many volatile esters are responsible for the aroma of ripe fruits, including apples. For example, ethyl butanoate contributes to the apple aroma.

5. Which of the following is a narcotic analgesic, often derived from opium, that is used medically for pain relief but has a high potential for addiction?

   1. Aspirin
   2. Paracetamol
   3. Morphine
   4. Ibuprofen
   Show answer

   Answer: C. Morphine

   Morphine is a potent opioid analgesic derived from the opium poppy. It is highly effective for severe pain but also carries a significant risk of addiction and dependence.

More questions in this quiz

Answers and explanations are in the full quiz.

1. The presence of which ion in hard water is primarily responsible for its inability to lather with soap?
2. Which of the following food additives is primarily used as an antioxidant to prevent the spoilage of fats and oils in processed foods?
3. The presence of which group in a molecule is essential for its classification as an artificial sweetener?
4. Why are antiseptics different from disinfectants in their application?
5. Which of the following is a common antiseptic used for cleaning wounds?
6. Analgesics are drugs that relieve pain. Which of the following is a synthetic analgesic often used for its pain-relieving and fever-reducing properties?
7. Antiseptics and disinfectants kill or inhibit the growth of microorganisms. What is the key difference in their target application?
8. Compressed natural gas (CNG) is increasingly used as a fuel in vehicles. What is the primary component of CNG?
9. Liquid petroleum gas (LPG), commonly used as a cooking fuel, is a mixture of which two hydrocarbons?
10. What is the primary environmental concern associated with the historical use of chlorofluorocarbons (CFCs) as propellants?
11. Which of the following gases is a primary contributor to the greenhouse effect, trapping heat in the Earth's atmosphere?
12. Biodegradable plastics are designed to decompose naturally in the environment. Which of the following is a common characteristic of biodegradable polymers used in packaging?
13. Which of the following is a characteristic property of polymers used in non-stick coatings for cookware, such as Teflon (polytetrafluoroethylene)?
14. What makes natural rubber (polyisoprene) a useful material for tires and other elastic applications?
15. Which type of plastic is commonly used for making disposable cutlery, food containers, and is known for its transparency and low cost?
16. Vanillin, the principal aromatic compound in vanilla beans, is a derivative of which functional group?
17. The characteristic 'catty' or 'sulfurous' smell associated with some perfumes and flavorings is often due to compounds containing which element?
18. Which of the following is an artificial sweetener that is a dipeptide composed of aspartic acid and phenylalanine?
19. Which of these is a common example of a psychoactive drug that acts as a central nervous system depressant and is widely consumed for its intoxicating effects?
20. Which common stimulant drug, found in coffee and tea, works by blocking adenosine receptors in the brain, leading to increased alertness?
21. The neurotransmitter dopamine is associated with pleasure and reward pathways in the brain. Which class of drugs is known to significantly increase dopamine levels, leading to euphoria and addiction?
22. What is the primary reason for adding sodium fluoride (NaF) to toothpaste and drinking water in some regions?
23. Which of the following substances is a common artificial sweetener that is hundreds of times sweeter than sugar but provides no calories, and is stable at high temperatures?
24. Activated charcoal is often used in water purification. What is its primary function?
25. What is the primary function of a desiccant in packaging?
26. The use of aluminum foil in food packaging is primarily due to its properties of:

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