Class XI Chemistry States of Matter Quiz 5

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Question 1

18 g of glucose dissolved in 1 kg of water is heated to boiling. The boiling point (in K) measured at 1 atm pressure is closest to
[Ebulioscopic constant, for water is 0.52 K kg mol^–1. Consider absolute zero to be
–273.15 ºC]

• A373.15
• B373.10
• C373.20
• D373.25

Question 2

At a constant pressure P, the plot of volume (V) as a function of temperature (T) for 2 moles of an ideal gas gives a straight line with a slope value of P (in atm) is closest to
[Gas constant, L atm mol^–1 K^–1]

• A0.25
• B0.5
• C1.0
• D2.0

Question 3

The packing efficiency in a body-centred cubic (bcC. structure is closest to

• A74%
• B63%
• C68%
• D52%

Question 4

When the pure solvent diffuses out of the solution through the semi-permeable membrane then the process is called

• AOsmosis
• BReverse osmosis
• CSorption
• DDialysis

Question 5

The correct statement regarding defect in solids is

• AFrenkel defect is usually favoured by a very small difference in the sizes of cations and anions.
• BFrenkel defect is a dislocation defect.
• CTrapping of proton in the lattice leads to the formation of F-centers.
• DSchottky defect has no effect on the physical properties of solids.

Question 6

An element having an atomic radius of 0.14 nm crystallizes in an fcc unit cell. What is the length of a side of the cell?

• A0.56 nm
• B0.24 nm
• C0.96 nm
• D0.4 nm

Question 7

The volume strength of 1.5 N H₂O₂ solution is

• A16.8 L
• B8.4 L
• C4.2 L
• D5.2 L

Question 8

Which among the following will show anisotrophy?

• AGlass
• BPlastic
• CBarium chloride
• DWood

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