Q. In modern diving apparatus, a mixture of

H e

and

O_{2}

is used. Why ?

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Q. State Faraday's first law of electrolysis.

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Q. What are artificial sweetening agents ? Give example.

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Q. Give the sources of the following Vitamins and name the diseases caused by their deficiency :
(a) A (b) D (c) E (d) K

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Q. What is PHBV ? How is it useful to man ?

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Q. What is catalysis ? How is catalysis classified ? Give two examples for each type of catalysis.

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Q. Explain the following reactions :
(a) Carbylamine reaction
(b) Sandmeyer reaction

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Q. A mixture of

C a_{3} P_{2}

and

C a C_{2}

, is used in making Holmes signal. Explain.

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Q. Calculate the magnetic moment of a divalent ion in aqueous solution if its atomic number is 25?

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Q. What is an ambidentate ligand ? Give example.

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Q. How is chlorine prepared by electrolytic method ? Explain its reaction with
(i) Cold and dil. NaOH
(ii) Slaked lime

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Q. How does ozone react with following ?
(i) PbS
(ii) Moist KI
(iii) Hg
(iv)

C_{2} H_{4}

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Q. What are antibiotics ? Give example.

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Q. Describe the following :
(i) Cannizaro reaction
(ii) Decarboxylation

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Q. Explain the following reactions :
(i) Reimer-Tiemann reaction
(ii) Williamson synthesis

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Q. Explain the terms:
(a) Enantiomers
(b) Racemisation

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Q. Give a detailed account of the collision theory of reaction mils of Bimolecular gaseous reactions.

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Q. i). State Raoult's Law.

ii). The vapour pressure of pure benzene at a certain temperature is

0.850

bar. A non-volatile non-electrolyte solid weighing

0.5

g when added to

39.0

g of benzene (molar mass

78

m o l^{- 1}

). Vapour pressure of the solution, then is

0.845

bar. What is the molar mass of the solid substance?

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Q. What is polling ?

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Q. Differentiate roasting and calcination with examples?

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Q. What is Misch metal ? Give its composition and uses.

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Q. Define osmotic pressure.

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Q. Write the names of monomers of the following polymers :
(a) Bakelite
(b) Terylene

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