Answer the question number 1
Answer the question number 1 CRASH COURSE
INSTITUTE
PICS - IMPORTANT QUESTION BANK CHEMISTRY PHYSICAL CHEMISTRY-XII
THE SOLID STATE
an With Which silicon Can be doped to give a p •type semiconductor.
2 _ Why iS Salt SonwtinwS yellow of white?
3. What makes alkali metal halides Sometimes colored which are otherwise colorless?
4. iS the effect of *hottky defects on the density of Solids?
5. What is Curie
6. Which stoichiometric defect result in incrmse in density??
7. the non stoichiometric point defect responsible for alkali
8_ Why iS considered a super Cooled liquid
9. What iS a Soniconductor? two main types of Semiconductors. giv"mg examples,
10 Explain
added as an impurity in it
trodmW ionic Solid Catinof is
II. What type Of substances make better ferromagnetic or
Justify MSwer
12 Assign reason Why Of the Very Old objects oppar Slightly milky Of
An element crystallizes in a Structure fcc unit cell with length of 200
its density. if 200 g Of this element contains 24 XIOB atoms
14 The of unit cell edge Of body Centu•ed 'rætal crystal is 352 the
radius of an of metal
15, An elenent (zz60) face cmtered cubic unit cell has of 6.23 glans , What
is edge of unit cell,
16 State the difference frenkeJ defects. Which Of the TWO Changes the
density of the Solide
IT An element crystallizes in the Simple cubic Structure density is 8 g/cn3 and its 200 g
cmtainS 24xlO the edge
18. is the of octahedrul void? Which of the
has the highest packing efficiency • (i) FCC (ii)BCC (iii) Simple cubic
19
of elenwnt g form t'wse of A 2 / 3rd of
tetrahedral voids _ What is the formula Of the compound formed by these elements A and
20. W'wt o glass different from a Solid Such as conditions could qw•tz be
converted iMo glass?
21
What is semiconductors *Describe n•type Of . giving examples
22. Conductivity of is enhanced by the introduction of *Chas the impurity Why?
23.
What is the eff&t of temp. electrical Conductivity Of Conductors and semiconductors.
24.
26.
27 _
30.
What are 12-16 and 13-15 Explain,
W"wt anisotropic isotropic So lids?
Why is glass considered as a cooled liquid?
You'&
Why does zinc oxide exhibit enhanced electrical conductivity on
f errinvætism.
Wiwt do defects. nonstoichiometric defuts and defects?
Analysis Shows Nickel oxide What fractions Of nickel exist as N" ions
Nin ions?
Silicon can be doped with Boron to give p-type semiconductor.
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