MEDIUM
JEE Main
IMPORTANT
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Given below are two statements. One is labelled as
Assertion and the other is labelled as Reason .
Assertion Sharp glass edge becomes smooth on heating it up to its melting point.
Reason The viscosity of glass decreases on melting.
Choose the most appropriate answer from the options given below.
Assertion and the other is labelled as Reason .
Assertion Sharp glass edge becomes smooth on heating it up to its melting point.
(a) is true but is false
(b)Both and are true but is NOT the correct
explanation of
explanation of
(c) is false but is true.
(d)Both and are true and is the correct explanation of .

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Important Questions on Solid State
MEDIUM
JEE Main
IMPORTANT
The total number of octahedral void (s) per atom present in a cubic close packed structure is :

EASY
JEE Main
IMPORTANT
Which of the following arrangements shows the schematic alignment of magnetic moments of antiferromagnetic substance?

MEDIUM
JEE Main
IMPORTANT
The ratio of number of atoms present in a simple cubic, body centered cubic and face centered cubic structure are, respectively :

MEDIUM
JEE Main
IMPORTANT
An element has a face-centered cubic structure with a cell edge of . The distance between the centres of two nearest tetrahedral voids in the lattice is

EASY
JEE Main
IMPORTANT
A compound of formula has the HCP lattice. Which atom forms the HCP lattice and what fraction of the tetrahedral voids are occupied by the other atoms?

EASY
JEE Main
IMPORTANT
Which primitive unit cell has unequal edge lengths and all axial angles different from

MEDIUM
JEE Main
IMPORTANT
Atoms of element form lattice and those of element occupy of its tetrahedral voids. The percentage of element in the lattice is (Nearest integer)

MEDIUM
JEE Main
IMPORTANT
The distance between and ions in solid of density is . (Nearest Integer)
(Given : )
