Question
Explain the structure and classification of animes.

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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, Rupali a Class XII student decided to make others aware about the adverse effects of these carcinogens in foods. She consulted the school principal and requested him to instruct the canteen contractor to stop selling sandwiches, pizzas, burgers and other bakery products to the students. The principal took an immediate action and instructed the canteen contractor to replace the bakery products with some protein and vitamin rich food like fruits, salads, sprouts, etc. The decision was welcomed by the parents and the students.
After reading the above passage, answer the following questions:
  1. What are the values (at least two) displayed by Rupali?
  2. Which polysaccharide component of carbohydrates is commonly present in bread?
  3. Write the two types of secondary structures of proteins.
  4. Give two examples of water soluble vitamins.
$FeSO_4$ solution mixed with $\left( NH _4\right)_2 SO _4$ solution in $1:1$ molar ratio gives the test of $Fe ^{2+}$ ion but $CuSO _4$ solution mixed with aqueous ammonia in $1: 4$ molar ratio does not give the test of $Cu ^{2+}$ ion. Explain why?
Explain the properties of vitamins and also classify them.
  1. What type of deviation is shown by a mixture of ethanol and acetone? Give reason.
  2. A solution of glucose (molar mass = $180 g\ mol^{–1}$) in water is labelled as $10\%$ (by mass). What would be the molality and molarity of the solution?
(Density of solution = $1.2 g\ mL^{–1}$).
$i.$ Tert$-$Butylamine cannot be prepared by the action of $NH_3$ on tert$-$butyl bromic. Explain why?
$ii.$ Suggest a convenient method for the preparation of tert$-$butylamine.
Rate constant for a first order reaction has been found to be $2.54 \times 10^{-3} \mathrm{~s}^{-1}$. Calculate its three-fourth life.
(a) Draw the structure of a galvanic cell and also describe the reaction taking place in it.
(b) What happens when opposite external potential is applied in the galvanic cell system? Explain.
Match the types of colloidal systems given in Column I with the name given in Column II.
  Column I   Column II
(i) Solid in liquid. (a) Foam.
(ii) Liquid in solid. (b) Sol.
(iii) Liquid in liquid. (c) Gel.
(iv) Gas in liquid. (d) Emulsion.
Describe the reactions of carboxylic acids in which C-OH bond is broken.
Using crystal field theory, draw energy level diagram, write electronic configuration of the central metal atom/ion and determine the magnetic moment value in the following:
  1. $[\text{CoF}_6]^{3-}, [\text{Co(H}_2\text{O})_6]^{2+}, [\text{Co(CN)}_6]^{3-}$
  2. $[\text{FeF}_6]^{3-}, [\text{Fe(H}_2\text{O})_6]^{2+}, [\text{Fe(CN})_6]^{4-}$