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1
NEET 2022 Phase 1
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Choose the correct statement:

A
Diamond and graphite have two dimensional network.
B
Diamond is covalent and graphite is ionic.
C
Diamond is sp3 hybridized and graphite is sp2 hybridized
D
Both diamond and graphite are used as dry lubricants.
2
NEET 2022 Phase 1
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Copper crystallises in fcc unit cell with cell edge length of 3.608 $$\times$$ 10$$-$$8 cm. The density of copper is 8.92 g cm$$-$$3. Calculate the atomic mass of copper.

A
63.1 u
B
31.55 u
C
60 u
D
65 u
3
NEET 2021
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The correct option for the number of body centred unit cells in all 14 types of Bravais lattice unit cells is :
A
3
B
7
C
5
D
2
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
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Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are :
A
12, 6
B
8, 4
C
6, 12
D
2, 1
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