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Chemistry | AP Board | Grade 12 | 2015
Q. Define molality (m). Calculate molality (m) of 10 gm of Glucose (C6H12O6) in 90 gm of water.
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Q. What are different types of adsorption? Give any three differences between characteristics of these different types of adsorption.
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Q. What is electrolysis? A solution of CuSO4 is electrolysed for 10 minutes with a current of 1.5 amperes. What is the mass of copper deposited at the cathode?
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Q. Explain the Wurtz-Fittig reaction.
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Q. What is metallic corrosion? Give one example
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Q. What happens when white phosphorous is heated with conc. NaOH solution in an inert atmosphere of CO2?
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Q. Write the names of the monomers used for getting the following polymers.
(i) Nylon 6, 6
(ii) Glyptal
(iii) Bakelite
(iv) Terylene
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Q. Explain the structures of XeF2 and XeF6.
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Q. State and explain Kohlrausch's law of independent migration of ions.
Given the application of Kohlrauschs law of independent migration of ions.
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Q. What is tailing of Mercury?
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Q. How is Chlorine prepared by electrolyti method? Explain its reaction with:
(a) excess NH3
(b) cold and dil. NaOH
(c) slaked lime
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Q. Explain polling.
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Q. Write the characteristic properties of transition elements.
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Q. Write the structures of the following compounds.
(i) 2chloro, 3methyl pentane
(ii) p - bromo chloro benzene
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Q. Describe the following:
(i) Cross aldol condensation
(ii) Decarboxylation
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Q. What are isotonic solutions?
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Q. What are Antiseptics? Give example
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Q. What are artificial sweetening agents? Give example
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Q. Explain the following reactions:
(i) Reimer - Tiemann reaction
(ii) Williamson's ether synthesis
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Q. Explain the purification of sulphide ores by froth floatation method?
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Q. Using IUPAC norms, write the systematic names of the following.
(i) K4[Fe(CN)6]
(ii) [Cu(NH3)4]SO4
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Q. Deficiency disease, chemical name and molecular formula of following vitamins.
(a)vitamin A
(b)Vitamin B
(c)Vitamin C
(d)Vitamin D
(e)Vitamin E
(f)Vitamin K
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Q. Explain the following named reactions:
(i) Sandmeyer reaction
(ii) Gattermann reaction
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