1

JEE Main 2020 (Online) 5th September Evening Slot

MCQ (Single Correct Answer)

+4

-1

An element crystallises in a face-centred cubic (fcc) unit cell with cell edge $$a$$. The distance
between the centres of two nearest octahedral voids in the crystal lattice is :

2

JEE Main 2020 (Online) 5th September Morning Slot

MCQ (Single Correct Answer)

+4

-1

A diatomic molecule X

(Avogadro constant (N

_{2}has a body-centred cubic (bcc) structure with a cell edge of 300 pm. The density of the molecule is 6.17 g cm^{–3}. The number of molecules present in 200 g of X_{2}is :(Avogadro constant (N

_{A}) = 6 $$ \times $$ 10^{23}mol^{–1})3

JEE Main 2020 (Online) 9th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

'X' melts at low temperature and is a bad
conductor of electricity in both liquid and solid
state. X is :

4

JEE Main 2020 (Online) 8th January Evening Slot

MCQ (Single Correct Answer)

+4

-1

Which of the following compounds is likely to
show both Frenkel and Schottky defects in its
crystalline form?

Questions Asked from Solid State (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions

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