The mole fraction of the solute in a 1.00 molal aqueous solution is: 

1. 0.00177 2. 0.0344
3. 0.0177 4. 0.1770
Subtopic:  Concentration Based Problem |
From NCERT
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If 500 mL of a 5 M solution is diluted to 1500 mL, the molarity of the resultant solution is: 

1. 1.5 M

2. 1.66 M

3. 0.017 M

4. 1.59 M

Subtopic:  Concentration Based Problem |
 82%
From NCERT
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At STP, the density of CCl4 vapour in g/L will be closest to: 

1. 8.67

2. 6.87

3. 3.67

4. 4.26

Subtopic:  Concentration Based Problem |
 77%
From NCERT
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Which of the following is dependent on temperature?

1. Molarity 2. Mole fraction
3. Weight percentage 4. Molality
Subtopic:  Concentration Based Problem |
 80%
From NCERT
NEET - 2017
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The molality of pure water is: 

1. 1 m

2. 18 m

3. 55.5 m

4. None of the above

Subtopic:  Concentration Based Problem |
 78%
From NCERT
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20 g of sugar is dissolved in enough water to make a final volume of 2L. The concentration of sugar (C12H22O11) in mol L–1  will be:

1. 0.29 mol/L

2. 0.029 mol/L

3. 0.35 mol/L

4. 0.032 mol/L

Subtopic:  Concentration Based Problem |
 77%
From NCERT
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The number of molecules of H2SO4 present in 100 mL of 0.02 M H2SO4 solution is: 

1. 12.044×1020 molecules

2. 6.022×1023 molecules

3. 1×1023 molecules

4. 12.044×1023 molecules

Subtopic:  Concentration Based Problem |
 79%
From NCERT
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25.3 g of sodium carbonate, Na2CO3, is dissolved in enough water to make 250 mL of a solution. If sodium carbonate completely dissociates, the molar concentrations of sodium ion, Na+ and carbonate ion, CO32-are respectively:
(molar mass of Na2CO3 = 106g mol-1)

1. 0.955 M and 1.910 M
2. 1.910 M and 0.955 M
3. 1.90 M and 1.910 M
4. 0.477 M and 0.477 M

Subtopic:  Concentration Based Problem |
 70%
From NCERT
AIPMT - 2010
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If 4 g of NaOH dissolves in 36 g of H2O, the molarity of the solution is: (specific gravity of solution is 1 g mL-1) : 

1. 3 M 2. 3.5 M
3. 2.5 M 4. 2 M
Subtopic:  Concentration Based Problem |
 71%
From NCERT
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The volume occupied by one water molecule (density = 1 g cm-3) is:

1. 9.0×10-23  cm3

2. 6.023×10-23  cm3

3. 3.0×10-23  cm3

4. 5.5×10-23  cm3

Subtopic:  Concentration Based Problem |
 66%
From NCERT
AIPMT - 2008
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