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Which of the following polymers have vinylic monomer units?
(i) Acrilan
(ii) Polystyrene
(iii) Nylon
(iv) Teflon
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How is the following resin intermediate prepared and which polymer is formed by this monomer unit?
(Resin intermediate)
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Match the polymers given in Column I with their commercial names given in Column II.
| Column I | Column II |
| (i) Polyester of glycol and phthalic acid | (a) Novolac |
| (ii) Copolymer of 1, 3-butadiene and styrene | (b) Glyptal |
| (iii) Phenol and formaldehyde resin | (c) Buna-S |
| (iv) Polyester of glycol and terephthalic acid | (d) Buna-N |
| (v) Copolymer of 1, 3-butadiene and acrylonitrile | (e) Dacron |
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Which of the following polymers soften on heating and harden on cooling? What are the polymers with this property collectively called? What are the structural similarities between such polymers? Bakelite, urea-formaldehyde resin, polythene, polyvinyls, polystyrene.
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How would you account for the following:
There is a greater range of oxidation states among the actinoids than among the lanthanides.
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Name the suitable alcohol and reagent, from which 2-Chloro-2-methyl propane can be prepared.
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Write the equations for the following reaction:
Tert butyl chloride is treated with sodium ethoxide.
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Why does the cell voltage of a mercury cell remain constant during its lifetime?
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Write any two consequences of Lanthanoid Contraction.
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Which of the following reactions are feasible?
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Give reasons:
Mercury cell delivers a constant potential during its life time.
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Write the mechanism of the following reaction:
\[\ce{2CH3CH2OH ->[H^+][413 K] CH3-CH2-O-CH2-CH3 + H2O}\]
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Draw the zwitter ion structure for sulphanilic acid.
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Give a reason for the following observations:
Amino acids behave like salts.
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A non-volatile solute 'X' (molar mass = 50 g mol−1), when dissolved in 78 g of benzene, reduced its vapour pressure to 90%. Calculate the Mass of X dissolved in the solution.
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Write the name of the reaction, structure and IUPAC name of the product formed when:
\[\ce{CH3CH2CH(CH3)CH(CH3) ONa}\] reacts with \[\ce{C2H5Br}\]
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The vapour pressure of pure water at a certain temperature is 23.80 mm Hg. If 1 mole of a non-volatile non-electrolytic solute is dissolved in 100g water, Calculate the resultant vapour pressure of the solution.
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Draw the structures of the given compound - 3-Bromo-4-phenylpentanoic acid
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Write the name of reagent and equation for the preparation of the following ether by Williamson’s synthesis:
2-Methoxy-2-methylpropane
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Write the name of reagent and equation for the preparation of the following ethers by Williamson’s synthesis:
2-Methoxy-2-methylpropane
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