Tag: food spoilage and food preservation

Questions Related to food spoilage and food preservation

Which of the following is not a food additive?

chemistry chemistry in daily life food spoilage and food preservation methods of preserving food chemicals in food

  1. Preservatives

  2. Sweetening agents

  3. Flavours

  4. Oxidants

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Correct Option: D
Explanation:

Antioxidants are added to food to prevent it from spoiling.

Name an artificial sweetener which is derivative of sucrose.

chemistry chemistry in daily life food spoilage and food preservation methods of preserving food chemicals in food

  1. Saccharine

  2. Sucrolose

  3. Sucrobenzamide

  4. Aspartame

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Correct Option: B
Explanation:

Surolose is trichloro derivative of sucrose. Its appearance and taste are like sugar.

Match the column I with column II and mark the appropriate choice.

Column I Column II
(A) Alitame (i) Antihistamine
(B) Iodoform (ii) Artificial sweetener
(C) Prontosil (iii) Antibacterial agent
(D) Terfenadine (iv) Antiseptic
chemistry chemistry in daily life food spoilage and food preservation methods of preserving food chemicals in food

  1. (A) $\rightarrow$(i), (B) $\rightarrow$(ii), (C) $\rightarrow$(iv), (D) $\rightarrow$(iii)

  2. (A) $\rightarrow$(ii), (B) $\rightarrow$(iv), (C) $\rightarrow$(iii), (D) $\rightarrow$(i)

  3. (A) $\rightarrow$(iii), (B) $\rightarrow$(i), (C) $\rightarrow$(ii), (D) $\rightarrow$(iv)

  4. (A) $\rightarrow$(iv), (B) $\rightarrow$(iii), (C) $\rightarrow$(i), (D) $\rightarrow$(ii)

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Correct Option: B
Explanation:
  • Antiseptics are applied to the living tissues such as wounds, cuts, ulcers and diseased skin surfaces. Iodoform is used as an antiseptic for wounds.
  • Alitame is high potency Artificial sweetener, the control of sweetness of food is difficult while using it.
  • Prontosil, also called sulfamidochrysoidine, trade name of the first synthetic drug used in the treatment of general bacterial infections in humans.It is an Antibacterial agent.
  • Antihistamines interfere with the natural action of histamine by competing with histamine for binding sites of receptor where histamine exerts its effect.Synthetic drugs, brompheniramine (Dimetapp) and terfenadine (Seldane), act as antihistamines.

Which of the following is a food antioxidant?

chemistry chemistry in daily life food spoilage and food preservation methods of preserving food chemicals in food

  1. Butylated hydroxytoluene (BHT)

  2. Butylated hydroxyanisole (BHA)

  3. Saccharin

  4. Both A and B

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Correct Option: D
Explanation:
Butylated hydroxytoluene is  an organic compound primarily used as an antioxidant food additive.

Butylated hydroxyanisole (BHA) is an antioxidant consisting of a mixture of two isomeric organic compounds, 2-tert-butyl-4-hydroxyanisole and 3-tert-butyl-4-hydroxyanisole.

Saccharin is an artificial sweetener.

Option D is correct.

Fermentation was discovered by:

evs - i methods of preserving food food spoilage and food preservation chemicals in food food chemistry

  1. Vant Hoff and Le Bell.

  2. Louis Pasteur.

  3. Berzelius.

  4. Kolbe.

Show answer
Correct Option: B
Explanation:

Louis Pasteur discovered fermentation.


 In 1860, he demonstrated that bacteria cause souring in milk, a process formerly thought to be merely a chemical change, and his work in identifying the role of microorganisms in food spoilage led to the process of pasteurization.

 Option B is correct.

Name two $\alpha$-amino acids, which form a dipeptide, which is 100 times more sweet than cane sugar?

chemistry chemistry in daily life food spoilage and food preservation methods of preserving food chemicals in food

  1. Aspartic acid

  2. Alanine

  3. Serine

  4. Phenylalanine

  5. Tryptophan

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Correct Option: A,D
Explanation:

Aspartame is the artificial sweetener, which is 100 times more sweet than cane sugar. It is methyl ester of dipeptide formed from aspartic acid and phenylalanine.

Aspartame is unstable at cooking temperature. Where would you suggest aspartame to be used for sweetening?

chemistry chemistry in daily life food spoilage and food preservation methods of preserving food chemicals in food

  1. Soft drinks

  2. Cold drinks

  3. Both of them

  4. None of these

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Correct Option: C
Explanation:

Aspartame is unstable at cooking temperature, hence it can used in soft drinks and cold drinks for artificial sweetening.

Non-degradable and fat-soluble pollutant, such as DDT enters the food chain, the pollutant:

chemistry chemistry in daily life food spoilage and food preservation methods of preserving food chemicals in food

  1. magnifies in concentration at each trophic level

  2. degrades at first trophic level

  3. accumulates in the body fat of organism at the first trophic level and does not pass to second trophic level

  4. decreases in concentration at each trophic level

Show answer
Correct Option: A
Explanation:
Biomagnification is the accumulation or increasing concentration of lipophilic pesticides in the top members of the food chain. 
During biomagnification, the concentration of non-degradable pesticide like DDT goes on increasing along the food chain and highest values occur in the consumers of the top trophic level. So, the value of pesticide will go on increasing at each trophic level. 

Thus, the correct answer is option A.

$NaCl$ is used as a food preservative and in freezing mixtures.

evs - i methods of preserving food food spoilage and food preservation chemicals in food food chemistry

  1. True

  2. False

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Correct Option: A
Explanation:

Bacteria cannot survive in salt conditions as water is completely extracted by salt due to its hygroscopic nature.

Therefore, $NaCl$ is used as a food- preservatives and in freezing mixtures.
So the given statement is true.

Which one of following is employed as a tranquilizer ?

evs - i methods of preserving food food spoilage and food preservation chemicals in food food chemistry

  1. Chlorpheninamine

  2. Equanil

  3. Naproxen

  4. Tetracycline

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Correct Option: B
Explanation:

Equanil is a diasaccharide [Everday life]