22 September 2008 New Chapter P-Block Elements Session 1
Based on NCERT BOOK, Class XI, Part II, Unit 11
Syllabus in JEE
Isolation/preparation and properties of the following non-metals: Boron, silicon, nitrogen, phosphorus, oxygen, sulphur and halogens; Properties of allotropes of carbon (only diamond and graphite), phosphorus and sulphur.
The chapter in the book has material on
11.1 to 4 on Boron family and boron
11.4 to 7 on Carbon family and allotropes of carbon
11.8 Some important compounds of carbon and silicon
Study
11.1 to 11.4
Study problems 11.1 ,11.2,11.3,11.4
Thermodynamics chapter
Past JEE questions with answers
1. The total energy of one mole of an ideal monatomic gas at 27°C is __________ calories. (JEE 1984)
Answer (3/2)RT = (1.5 mol)[1.987 cal/ (K mol.)](300 K) = 894.15 cal.
2. A system is said to be ___________ , if it can neither exchange matter nor energy with the surroundings. (JEE 1993)
Answer: isolated
3. The heat content of the products is more than that of the reactants in an _____________ reaction. (JEE 1993)
Answer: endothermic
4. When Fe (solid) is dissolved in acqueous hydrochloric acid in a closed vessel, the work done is _________________ . (JEE 1997)
Answer: zero
5. Enthalpy is an ____________ property. (JEE 1997)
Answer: extensive property.
It depends on mass of the substance
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Shri K.V.S.S. Gangadhara Sastry, Kakinada
2 years ago
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