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Mole fraction of sugar, if 34.2 g of sug...

Mole fraction of sugar, if 34.2 g of sugar is dissolved in 180 g of water is

A

`0.0099`

B

`0.099`

C

`0.99`

D

`9.90`

Text Solution

Verified by Experts

The correct Answer is:
A
Molecular mass of sugar `(C_(12)H_(22)O_(11))=342`
Molecular mass of water `(H_(2)O)=18`
Moles of sugar = `(34.2)/(342)=0.1`
Moles of water = `(180)/(18)=10`
Mole fraction of sugar = `(0.1)/(10+0.1)=0.0099`
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MTG IIT JEE FOUNDATION-MOLE CONCEPT, STOICHIOMETRY AND BEHAVIOUR OF GASES -EXERCISE (MCQ)
  1. The percentage of nitrogen in urea is about:

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  2. To neutralise 100 mL of 0.1 N H(2)SO(4), amount of 2N NaOH required is

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  3. A metal oxide contains 60% metal . The equivalent weight of metal is

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  4. The simplest formula of a compound containing 50% of element X (atomic...

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  5. In a hydrocarbon the mass ratio of hydrogen to carbon is 1:3. The empi...

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  6. The molecular mass of a compound is 88 amu having empirical formula of...

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  7. If 0.56 g KOH is present in 100 mL of solution, then its normality wil...

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  8. To prepare 600 mL of 2 N solution of NH(4)OH, volume of 10 N NH(4)OH r...

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  9. Normality of an acid is equal to

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  10. Number of moles of solute dissolved per litre of solution is

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  11. Under similar conditions of P and T, equal volume of all gases contain...

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  12. Which of the following is independent of temperature?

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  13. The number of moles of NaCl in 250cm^(3) of 0.50 M NaCl is

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  14. A solution is prepared by dissolving 10 g of NaOH in 100 mL of solutio...

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  15. The empirical formula of sucrose is :

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  16. Which one of the following is not the standard for atomic mass?

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  17. Mole fraction of sugar, if 34.2 g of sugar is dissolved in 180 g of wa...

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  18. Which of the following contains more molecules?

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  19. One mole of H(2)O corresponds to

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  20. The volume of 0.5 mole of gas at 1 atm pressure and 273^(@)C temperatu...

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