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Class XI Chemistry States of Matter Quiz 1

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Question 1

Which of the following is not a function of an impurity present in a crystal?

Question 2

The flame colors of metal ions are due to:

Question 3

ZnO on heating change color from ______ to _______

Question 4

Give the correct order of initials T (true) or F (false) for following statements.
I) In an anti-fluorite structure anions form FCC lattice.
II) If the radius of cations and anions are 0.2 Å and 0.95 Å then coordinate number of cation in the crystal is 4.
III) An atom/ion is transferred from a lattice site to an interstitial position in Frenkel defect.
IV) Density of crystal always increases due to substitutinal impurity defect.

Question 5

Element X crystallizes in a 12 coordination FCC lattice. On applying high temperature, it changes to 8 coordination BCC lattice. Find the ratio of the density of the crystal lattice before and after applying high temperature?

Question 6

Select the incorrect statement:

Question 7

HgO is prepared by two different methods: one shows yellow color while the other shows red color. The difference in color is due to difference in

Question 8

Appearance of color in solid alkali metal halide is due to:
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