Class XII Chemistry

Good Essays
Topics: Ethanol
Name : ___________

General Instructions: 1. Revise UNITS 1 to 5 2. Solve numerical problems concerning UNITS 1,2 ,3 and 4 from previous (2010-2013 ) Sample /CBSE question papers . 3. Prepare a project report on any of the following suggested Investigatory projects.

TOPICS FOR PROJECT WORK
1. Study of quantity of casein present in different samples of milk.
2. Extraction of essential oils present in Saunf (aniseed), Ajwain (carum), Illaichi (cardamom).
3. Study of common food adulterants in fat, oil, butter, sugar, turmeric power, chilli powder and pepper.
4. Preparation of rayon from filter paper
5. The effect of metal coupling on the rusting of iron
6. Comparative study of commercial antacids
Problem Solving Assessment
1. The electrode potentials of some metal electrodes are Cu2+ / Cu = 0.34 V , Pb2+ / Pb = — 0.13 V Ag+ / Ag = 0.80 V, Zn2+ / Zn = — 0.76 V. Which of the following reactions will not occur ? (a) Zn + Cu2+ → Zn2+ + Cu (b) Zn + Pb2+ → Zn2+ + Pb (c) Cu + 2Ag+ → Cu2+ + 2 Ag (d) Cu + Pb2+ → Cu2+ + Pb
2. The property of a colloidal solution in which the dispersion medium moves when placed in an electric field is called (a) electrophoresis (b) cataphoresis (c) electro-osmosis (d) both a and b
3. For the cobalt complex [Co(H2O)6]2+ ,the magnetic moment is 3.87 BM. The configuration of the 3d-orbital is (a) t2g6,eg1 (b) t2g5,eg2 (c) t2g4,eg3 (d) t2g3,eg4
4. Which of the following aqueous solutions have the highest boliing point (Molar masses : urea=60,glucose=fructose=180 , sucrose=342 g/mol) (a) 2% urea (b) 2% glucose (c) 2% fructose (d) 2% cane sugar
5. The volumes of M/10 HCl and M/2 HCl required to prepare 2 L of M/5 HCl are (a) 1600 mL and 400 mL (b) 1200 mL and 800 mL (c) 1500 mL and 500 mL (d) 1100 mL and 900 mL

6. An X molal solution of a compound in benzene has a mole fraction

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