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Polymers — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryPolymers5 Marks
Question
After watching a programme on TV about the presence of carcinogens (cancer causing agents) Potassium bromate and Potassium iodate in bread and other bakery products, Ritu a class XII student decided to aware others about the adverse effects of these carcinogens in foods. She consulted the school principal and requested him to instruct canteen contractor to stop selling sandwiches, pizza, burgers and other bakery products to the students. Principal took an immediate action and instructed the canteen contractor to replace the bakery products with some proteins and vitamins rich food like fruits, salads, sprouts etc. The decision was welcomed by the parents and students. After reading the above passage, answer the following questions:
  1. What are the values (at least two) displayed by Ritu?
  2. Which polysaccharide component of carbohydrates is commonly present in bread?
  3. Write the two types of secondary structure of proteins.
  4. Give two examples of water soluble vitamins.
✓

Answer

  1. Concerned, caring, socially alert, leadership.
  2. Starch.
  3. $\alpha$ -Helix and $\beta$-pleated sheets.
  4. Vitamin $B / B_1 / B_2 / B_6 / C$

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