JEE Main 2019 (Online) 8th April Morning Slot | Solid State Question 46 | Chemistry

Element 'B' forms ccp structure and 'A' occupies half of the octahedral voids, while oxygen atoms occupy all the tetrahedral voids, The structure of bimetallic oxide is :

AB₂O₄

A₂BO₄

A₄B₂O

A₂B₂O

JEE Main 2019 (Online) 11th January Evening Slot

MCQ (Single Correct Answer)

-1

Out of Syllabus

The radius of the largest sphere which fits properly at the centre of the edge of a body centred cubic unit cell is : (Edge length is represented by 'a')

0.134 a

0.067 a

0.047 a

0.027 a

JEE Main 2019 (Online) 11th January Morning Slot

MCQ (Single Correct Answer)

-1

Out of Syllabus

A solid having density of 9$$ \times $$10³ kg m^–3 forms face centred cubic crystals of edge length $$200\sqrt 2 $$ pm. What is the molar mass of the solid?
[Avogadro constant $$ \cong $$ 6 $$ \times $$ 10²³ mol^–1 , $$\pi $$ $$ \cong $$ 3]

0.0305 kg mol^–1

0.4320 kg mol^–1

0.0216 kg mol^–1

0.0432 kg mol^–1

JEE Main 2019 (Online) 10th January Evening Slot

MCQ (Single Correct Answer)

-1

Out of Syllabus

A compound of formula A₂B₃ has the hcp lattice. Which atom forms the hcp lattice and what fraction of tetrahedral voids is occupied by the other atoms :

hcp lattice - A, $${1 \over 3}$$ Tetrahedral voids-B

hcp lattice - B, $${1 \over 3}$$ Tetrahedral voids - A

hcp lattice - A, $${2 \over 3}$$ Tetrahedral voids - B

hcp lattice - B, $${2 \over 3}$$ Tetrahedral voids - A

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