BITSAT SERIES

Chemistry

Packing Efficiency

4 previous year questions.

Volume: 4 Ques

Yield: Medium

High-Yield Trend

1

2018

2

2014

1

2011

Chapter Questions
4 MCQs

01

PYQ 2011

medium

chemistry ID: bitsat-2

The fraction of total volume occupied by the atoms present in a simple cube is:

1

π3\sqrt(2)

2

π4\sqrt(2)

3

π4

4

π6

02

PYQ 2014

medium

chemistry ID: bitsat-2

An elemental crystal has a density of . The packing efficiency is 0.68. The closest distance of approach between neighbouring atoms is . What is the mass of one atom approximately?

1

2

3

4

03

PYQ 2014

medium

chemistry ID: bitsat-2

An elemental crystal has a density of . The packing efficiency is . The closest distance of approach between neighbouring atom is . What is the mass of one atom approximately?

1

93 amu

2

39 amu

3

63 amu

4

29 amu

04

PYQ 2018

medium

chemistry ID: bitsat-2

Each edge of a cubic unit cell is 400 pm long. If the atomic mass of the element is 120 and its density is 6.25 g cm⁻³, the crystal lattice is: (Use mol⁻¹)

1

primitive

2

body centered

3

face centered

4

end centered