Kendriya Vidyalaya Garhara
Session:2015-16
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Slip test 2
class-XIISc
Topic : Solution
MM:25
What is the effect of temperature on molality of a solution?
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State Raoults law for lowering of vapour pressure
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Define isotonic solutions.
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–5
KH value for Ar(g), CO2(g), HCHO (g) and CH4 (g) are 40.39, 1.67, 1.83×10 and 0.413 respectively.
Arrange these gases in the order of their increasing solubility
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What is “semi permeable membrane”?
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Why is the mass determined by measuring a colligative property in case of some solutes abnormal ?
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What is reverse osmosis? Give its one use.
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State Henry’s law and mention its two applications.
2
Define azeotropes. What are minimum boiling azeotrope and maximum boiling azetrope
`
2
Why are aquatic species more comfortable in cold water in comparison to warm water?
2
How does sprinkling of salt help in clearing the snow covered roads in hilly areas? Explain the phenomenon
involved in the process.
2
Explain why on addition of 1 mol of NaCl to 1 litre of water, the boiling point of water increases, while addition of 1
mol of methyl alcohol to one litre of water decreases its boiling point.
2
45 g of ethylene glycol is mixed with 600 g of water. Calculate the freezing point depression and freezing point of
the solution.
2
200 cm3 of an aqueous solution of a protein contains 1.26 g of the protein. The osmotic pressure of such a solution
at 300 K is found to be 2.57x10-3 bar. Calculate the molar mass of protein
3
Why is it not possible to obtain pure ethanol by fractional distillation? What general name is given to binary mixtures
which show deviation from Raoult’s law and whose components cannot be separated by fractional distillation. How
many types of such mixtures are there?
3
------------------------------------------------------------------------------------------------------------------------------Kendriya Vidyalaya Garhara
Session:2015-16
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
Slip test 2
class-XIISc
Topic : Solution
MM:25
What is the effect of temperature on molality of a solution?
1
State Raoults law for lowering of vapour pressure
1
Define isotonic solutions.
1
–5
KH value for Ar(g), CO2(g), HCHO (g) and CH4 (g) are 40.39, 1.67, 1.83×10 and 0.413 respectively.
Arrange these gases in the order of their increasing solubility
1
What is “semi permeable membrane”?
1
Why is the mass determined by measuring a colligative property in case of some solutes abnormal ?
1
What is reverse osmosis? Give its one use.
1
State Henry’s law and mention its two applications.
2
Define azeotropes. What are minimum boiling azeotrope and maximum boiling azetrope
`
2
Why are aquatic species more comfortable in cold water in comparison to warm water?
2
How does sprinkling of salt help in clearing the snow covered roads in hilly areas? Explain the phenomenon
involved in the process.
2
Explain why on addition of 1 mol of NaCl to 1 litre of water, the boiling point of water increases, while addition of 1
mol of methyl alcohol to one litre of water decreases its boiling point.
2
45 g of ethylene glycol is mixed with 600 g of water. Calculate the freezing point depression and freezing point of
the solution.
2
200 cm3 of an aqueous solution of a protein contains 1.26 g of the protein. The osmotic pressure of such a solution
at 300 K is found to be 2.57x10-3 bar. Calculate the molar mass of protein
3
Why is it not possible to obtain pure ethanol by fractional distillation? What general name is given to binary mixtures
which show deviation from Raoult’s law and whose components cannot be separated by fractional distillation. How
many types of such mixtures are there?
3
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Kendriya Vidyalaya Garhara
Session:2014-15
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Slip test 1
class-XIISc
Topic : Solid state
What do you mean by co-ordination number?
Define anisotropic properties. Give example
Name a compound which shows Frenkel as well as Schottky defects.
Differentiate p-type and n-type semiconductor with suitable example.
A compound contains x atoms at the corner and y atoms occupy all the tetrahedral
voids. Write the simplest formula of the compound.
Ionic solids conduct electricity in molten state but not in solid state. why?
Differentiate ferromagnetism and ferrimagnetism
Calculate efficiency of packing in (i)body centered cubic
(ii)face centered cubic structure.
An element has a body centered cubic structure with a cell edge of 288pm. The density
of the element is 7.2 g/cm3. How many atoms are present in 208 g of the element?
Copper crystallizes in fcc and has a density of 8.93 g /cm3at 293 K. calculate the radius
of copper atom
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Kendriya Vidyalaya Garhara
11. What is the effect of temperature on molality of a solution?
12. Can one store CuSO4 solution in a zinc pot? Give reason.
13. What is the unit of second order rate constant?
14. State Henry’s law and mention its two applications.
15. Limiting molar conductivity for NaCl, HCl and CH3COONa are 126.4, 425.9 and 91.0 cm2 mol-1
respectively. Calculate Limiting molar conductivity for CH3COOH.
16. Explain pseudo first order reaction with suitable example.
17. Differentiate molecularity and order of a reaction.
18. For a first order reaction show that time required for 99% completion is twice the time required for the
completion of 90% of a reaction.
19. Define conductivity and molar conductivity for the solution of an electrolyte. Discuss their variation with
concentration.
20. 45 g of ethylene glycol is mixed with 600 g of water. Calculate the freezing point depression and
freezing point of the solution.
21. Define ideal solution. Draw vapour pressure curve for solutions showing positive and negative deviation
from ideal behavior.
22.
23. (a)Write the reaction occurred on electrodes in hydrogen –oxygen fuel cell.
(b)A solution of Ni(NO3)2 is electrolyses between platinum electrodes using a current of 5 ampere for
20 minutes what mass of Ni is deposited at the cathode?
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Kendriya Vidyalaya Garhara
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