CBSE Class 12 Chemistry Sample papers 2013 (14)
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CHEMISTRY TEST XII (UNIT-1 & 2)
1- MARK QUESTIONS
Q.1:- What is meant by semimolar and decimolar solutions
Q.2:- How many octahedral voids are there in 1 mole of a compound having cubic closed packed structure?
Q.3:- How much CO2 is produced when 6.0 g C is burnt in excess oxygen?
Q.4:- Define the term ‘doping’.
Q.5:- Why does conductivity of Silicon increase with the rise in temperature.
Q.6:- what are pseudosolids?
2- MARK QUESTIONS
Q.7:- Show that the relative lowering of vapour pressure of a solvent is a colligative property.
Q.8:- What is packing efficiency. Calculate the packing efficiency in bodycentered cubic crystal.
Q.9:- An aqueous solution containing 3.12 g of barium chloride in 250 g of water is found to be boil at 100.0832°C. Calculate the degree of dissociation of barium chloride.
Q.10:- Derive the formula for the density of a crystal whose length of the edge of the unit cell is known?
Q.11:- What is meant by non-stoichiometric defect? Ionic solids which have anionic vacancies due to metal excess defect develop colour. Explain with the help of suitable example.
Please refer to attached file for CBSE Class 12 Chemistry Sample papers 2013 (14)