EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 7 - Solid State>JEE Main 18 March 2021 Shift 2>Q 1

EASY

JEE Main

IMPORTANT

Earn 100

A hard substance melts at high temperature and is an insulator in both solid and in molten state.
This solid is most likely to be a / an :

16.67% studentsanswered this correctly

Important Questions on Solid State

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 7 - Solid State>JEE Main 18 March 2021 Shift 1>Q 2

In a binary compound, atoms of element

A

form a hcp structure and those of element

M

occupy

2 / 3

of the tetrahedral voids of the hcp structure. The formula of the binary compound is:

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 7 - Solid State>JEE Main 17 March 2021 Shift 2>Q 3

KBr

is doped with

10^{- 5}

mole percent of

{SrBr}_{2}

The number of cationic vacancies in

1 g

of

KBr

crystal is

10^{14}

. (Round off to the Nearest Integer). [Atomic Mass :

K = 39.1 u, Br = 79.9 u

,

N_{A} = 6.023 \times 10^{23}]

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 7 - Solid State>JEE Main 16 March 2021 Shift 2>Q 4

Ga

(atomic mass

70 u

) crystallizes in a hexagonal close packed structure. The total number of voids in

0.581 g

of

Ga

is ________

\times 10^{21}

. (Round off to the Nearest Integer).

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 7 - Solid State>JEE Main 16 March 2021 Shift 1>Q 5

A certain element crystallises in a bcc lattice of unit cell edge length 27 $\overset{o}{A}$ . If the same element under the same conditions crystallises in the $fcc$ lattice, the edge length of the unit cell in $\overset{o}{A}$ will be __________. (Round off to the Nearest Integer).

[Assume each lattice point has a single atom]

[Assume $\sqrt{3} = 1.73, \sqrt{2} = 1.41$ ]