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Biomolecules — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryBiomolecules5 Marks
Question
Explain the structure of fructose.
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Answer

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  1. Complete the following chemical equations:
  1. $\text{Cr}_{2}\text{O}_{7}^{2-}\text{(aq)}+\text{H}_{2}\text{S}\text{(g)}+\text{H}^{+}\text{(aq)}\rightarrow$
  2. $\text{Cu}^{2+}\text{(aq)}+\text{I}^{-}\text{(aq)}\rightarrow$
  1. How would you account for the following:
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  2. The third ionisation enthalpy of manganese $(Z = 25)$ is exceptionally high.
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Describe the common name system and IUPAC system of naming amines.
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What are the main differences between physical adsorption and chemical adsorption ?
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Match the complex ions given in Column $I$ with the colours given in Column $II$ and assign the correct code:
 
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Violet
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Green
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Pale blue
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Yellowish orange
 
 
 $5.$
Blue
Code:
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  2. Boiling point elevation constant for a solvent.
  1. A solution of glycerol $(C_3H_8O_3)$ in water was prepared by dissolving some glycerol in $500 g$ of water. This solution has a boiling point of $100.42^\circ C.$ What mass of glycerol was dissolved to make this solution? $(K_b$ for water $= 0.512 K \ kg\ mol^{–1}).$
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