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CBSE
Class 12 Chemistry
Solutions Chapter 2
Quiz 1
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Mole fraction of ethyl chloride and methanol in a ternary solution is 0.6 and 0.32 respectively. What is the mole fraction of third component. Also identify the solvent in this ternary solution.
0%
0.03, Ethyl chloride
0%
0.08, cannot be determined
0%
0.03, Methanol
0%
0.08, Ethyl chloride
Molality is expressed in
0%
mol/kg
0%
mol/L
0%
L/mol
0%
g/L
The level of contamination of chloroform was found to be 15 ppm. It means 15 g of chloroform is present in how many grams of solution?
0%
1000 g
0%
106 g
0%
100 g
0%
1.0 g
Mole fraction of glycerine, C3H5(OH)3 in a solution containing 36 gm of water and 46 gm of glycerine is:
0%
0.40
0%
0.20 correct
0%
0.46
0%
0.36
Calculate the molality of 12.5% w/w sulphuric acid?
0%
2.85m
0%
3.15m
0%
1.45m correct
0%
2.50m
When the solvent is in solid state, solution is
0%
Solid solution correct
0%
Gaseous solution
0%
Solution
0%
Liquid solution
The number of moles of KCl in 3 L of 3 M solution is
0%
27
0%
1
0%
9
0%
3
A 200.0 g sample of river water contains 6 mg of lead. How many parts per million of lead are in the sample?
0%
3 x 102 ppm
0%
6.5 m
0%
30 ppm
0%
21 ppm
The mass of sodium chloride in 2.5 M solution is
0%
37.80 g
0%
146.25 g
0%
117 .00g
0%
58.50 g
The molarity of a solution obtained by mixing 750 mL of 0.5 M HCL with 250 mL of 2 M HCL will be
0%
1.25 M
0%
2.5 M
0%
1.00 M
0%
0.875 M
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