Chemistry · Textbook solutions

Chemistry in Everyday Life

Every solved example, exercise, and miscellaneous question — in the order the textbook teaches them. · 45 questions

16. Chemistry in Everyday Life — worked example

1 q

Solved Example

Worked · 1
  1. Solved Ex.16.1
    How are the chemical reactions of food stuff with the environment controlled during storage ?

Exercises

44 q

1. Choose correct option

Practice · 8
  1. Choose correct option
    Ex Q.1 (A)
    Oxidative Rancidity is ........ reaction
    1. A.
      addition
    2. B.
      subtitution
    3. C.
      Free radical
    4. D.
      combination
  2. Ex Q.1 (B)
    Saponification is carried out by ........
    1. A.
      oxidation
    2. B.
      alkaline hydrolysis
    3. C.
      polymarisation
    4. D.
      Free radical formation
  3. Ex Q.1 (C)
    Aspirin is chemically named as ........
    1. A.
      Salicylic acid
    2. B.
      acetyl salicylic acid
    3. C.
      chloroxylenol
    4. D.
      thymol
  4. Ex Q.1 (D)
    Find odd one out from the following
    1. A.
      dettol
    2. B.
      chloroxylenol
    3. C.
      paracetamol
    4. D.
      trichlorophenol
  5. Ex Q.1 (E)
    Arsenic based antibiotic is
    1. A.
      Azodye
    2. B.
      prontosil
    3. C.
      salvarsan
    4. D.
      sulphapyridine
  6. Ex Q.1 (F)
    The chemical used to slow down the browning action of cut fruit is
    1. A.
      SO3\mathrm{SO_3}
    2. B.
      SO2\mathrm{SO_2}
    3. C.
      H2SO4\mathrm{H_2SO_4}
    4. D.
      Na2CO3\mathrm{Na_2CO_3}
  7. Ex Q.1 (G)
    The chemical is responsible for the rancid flavour of fats is
    1. A.
      Butyric acid
    2. B.
      Glycerol
    3. C.
      Protein
    4. D.
      Saturated fat
  8. Ex Q.1 (H)
    Health benefits are obtained by consumption of
    1. A.
      Saturated fats
    2. B.
      trans fats
    3. C.
      mono unsaturated fats
    4. D.
      all of these

2. Explain the following

Practice · 6
  1. Explain the following :
    Ex Q.2 (A)
    Cooking makes food easy to digest.
  2. Ex Q.2 (B)
    On cutting some fruits and vegetable turn brown.
  3. Ex Q.2 (C)
    Vitmin E is added to packed edible oil.
  4. Ex Q.2 (D)
    Browning of cut apple can be prolonged by applying lemon juice.
  5. Ex Q.2 (E)
    A diluted solution (4.8 % w/v) of 2,4,6-trichlorophenol is employed as antiseptic.
  6. Ex Q.2 (F)
    Turmeric powder can be used as antiseptic.

3. Identify the functional groups in the following molecule

Practice · 6
  1. Identify the functional grops in the following molecule :
    Ex Q.3 (A)
    Aspirin
  2. Ex Q.3 (B)
    Paracetamol
  3. Ex Q.3 (C)
    Penicillin
  4. Ex Q.3 (D)
    Chloramphenicol
  5. Ex Q.3 (E)
    Sulphanilamide
  6. Ex Q.3 (F)
    Glycerin CH2−OH\mathrm{CH_2-OH} CH−OH\mathrm{CH-OH} CH2−OH\mathrm{CH_2-OH}

4. Give two differences between the following

Practice · 4
  1. Give two differences between the following
    Ex Q.4 (A)
    Disinfectant and antiseptic
  2. Ex Q.4 (B)
    Soap and synthetic detergent
  3. Ex Q.4 (C)
    Saturated and unsaturated fats
  4. Ex Q.4 (D)
    Rice flour and cooked rice

5. Match the pairs

Practice · 1
  1. Ex Q.5
    Match the pairs.
    A groupB group
    A. Paracetamola. Antibiotic
    B. Chloramphenicolb. Synthetic detergent
    C. BHTc. Soap
    D. Sodium stearated. Antioxidant
    e. Analgesic

6. Name two drugs which reduce body pain

Practice · 1
  1. Ex Q.6
    Name two drugs which reduce body pain.

7. Explain with examples

Practice · 5
  1. Explain with examples
    Ex Q.7 (A)
    Antiseptics
  2. Ex Q.7 (B)
    Disinfectant
  3. Ex Q.7 (C)
    Cationic detergents
  4. Ex Q.7 (D)
    Anionic detergents
  5. Ex Q.7 (E)
    Non-ionic detergents

8. Explain : mechanism of cleansing action of soap with flow chart

Practice · 1
  1. Ex Q.8
    Explain : mechanism of cleansing action of soap with flow chart.

9. Broad spectrum and narrow spectrum antibiotics

Practice · 1
  1. Ex Q.9
    What is meant by broad spectrum antibiotic and narrow spectrum antibiotics?

10. Answer in one sentence

Practice · 9
  1. Answer in one senetence
    Ex Q.10 (A)
    Name the painkiller obtained from acetylation of salicyclic acid.
  2. Ex Q.10 (B)
    Name the class of drug often called as painkiller.
  3. Ex Q.10 (C)
    Who discovered penicillin?
  4. Ex Q.10 (D)
    Draw the structure of chloroxylenol and salvarsan.
  5. Ex Q.10 (E)
    Write molecular formula of Butylated hydroxy toluene.
  6. Ex Q.10 (F)
    What is the tincture of iodine ?
  7. Ex Q.10 (G)
    Draw the structure of BHT.
  8. Ex Q.10 (I)
    Write a chemical equation for saponification.
  9. Ex Q.10 (J)
    Write the molecular formula and name of

11. Answer the following

Practice · 2
  1. Answer the following
    Ex Q.11 (A)
    Write two examples of the following. a. Analgesics c. Antiseptics d. Antibiotics e. Disinfectant
  2. Ex Q.11 (B)
    What do you understand by antioxidant ?