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What is a chelate complex?
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Identify A and B in the following:
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The following questions are case-based questions. Read the passage carefully and answer the questions that follow:
| Carbohydrates are optically active polyhydroxy aldehydes and ketones. They are also called saccharides. All those carbohydrates which reduce Fehling's solution and Tollen's reagent are referred to as reducing sugars. Glucose, the most important source of energy for mammals, is obtained by the hydrolysis of starch. Vitamins are accessory food factors required in the diet. Proteins are the polymers of α-amino acids and perform various structural and dynamic functions in the organisms. Deficiency of vitamins leads to many diseases. |
Answer the following:
(a) The penta-acetate of glucose does not react with Hydroxylamine. What does it indicate? (1)
(b) Why cannot vitamin C be stored in our body? (1)
(c) Define the following as related to proteins: (2)
- Peptide linkage
- Denaturation
OR
(c) Define the following as related to carbohydrates: (2)
- Anomers
- Glycosidic linkage
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Which of the following species cannot act as a ligand? Give reason.
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Assertion (A): EDTA is a hexadentate ligand.
Reason (R): EDTA has 2 nitrogen and 4 oxygen donor atoms.
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Assertion (A): Order of reaction is applicable to elementary as well as complex reactions.
Reason (R): For a complex reaction, molecularity has no meaning.
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Which of the following is not correct?
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Match the properties with the elements of 3d series:
| (i) | lowest enthalpy of atomisation | (p) | Sc |
| (ii) | shows maximum number of oxidation states | (q) | Mn |
| (iii) | transition metal that does not form coloured compounds |
(r) | Zn |
| (s) | Ti |
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Which of the following statement is true?
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Does ionization isomer for the following compound exist? Justify your answer.
\[\ce{Hg[Co(SCN)4]}\]
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Is the central metal atom in coordination complexes a Lewis acid or a Lewis base? Explain.
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Arrange the increasing order of solubility in water.
\[\ce{C2H5Cl, C2H5NH2, C2H5OH}\]
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A 5% solution of \[\ce{Na2SO4.10H2O}\] (MW = 3 22) is isotonic with 2% solution of non- electrolytic, non volatile substance X. Find out the molecular weight of X.
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Draw structure of the following compound.
2-Methoxypropane
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Calculate the molarity of the following solution:
30 mL of 0.5 M H2SO4 diluted to 500 mL.
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A reaction is second order with respect to a reactant. How is the rate of reaction affected if the concentration of the reactant is reduced to half?
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Explain with two examples of the following:
Ligand
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Explain the following, giving two examples:
Coordination polyhedron
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Explain the following, giving two examples:
Coordination number
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Explain the following, giving two examples:
Homoleptic
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