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NEETChemistry

The Solid State

9 NEET Chemistry previous year questions on The Solid State — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.

Q1 FREE PREVIEW
PYQ
Most crystals show good cleavage because their atoms, ions or molecules are
aweakly bonded together
bstrongly bonded together
cspherically symmetrical
darranged in planes
✓ Correct answer: d) arranged in planes
ExplanationCleavage in crystals refers to the tendency of a crystal to break along specific planes of weakness.This happens because the arrangement of atoms, ions, or molecules in a crystal lattice creates planes where the bonding forces are weaker compared to other directions.Weak bonding along specific planes allows easy cleavage.Strong bonding within the planes keeps the structure intact in other directions.
Q2
PYQ

Frenkel and Schottky defects are :

a

nucleus defects

b

non-crystal defects

c

crystal defects

d

nuclear defects

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Q3
PYQ

An element has a body centered cubic (bcc) structure with a cell edge of \(288 \mathrm{~pm}\). The atomic radius is

[NEET 2020]

a

\(\frac{4}{\sqrt{3}} \times 288 \mathrm{pm}\)

b

\(\frac{4}{\sqrt{2}} \times 288 \mathrm{pm}\)

c

\(\frac{\sqrt{3}}{4} \times 288 \mathrm{pm}\)

d

\(\frac{\sqrt{2}}{4} \times 288 \mathrm{pm}\)

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Q4
PYQ

Which one of the following compounds shows both, Frenkel as well as Schottky defects?

[Re-NEET 2020]

a

ZnS

b

\(\mathrm{AgBr}\)

c

\(\mathrm{Agl}\)

d

\(\mathrm{NaCl}\)

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Q5
PYQ

In the fluorite structure, the coordination number of \({\mathrm{Ca}}^{2+}\) ion is

a

4

b

6

c

8

d

3

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Q6
PYQ

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

[JEE Main 2021, 18 Mar (Shift 2)]

a

Covalent solid

b

Molecular solid

c

Ionic solid

d

Metallic solid

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Q7
PYQ

The correct option for the number of body centred unit cells in all 14 types of Bravais lattice unit cells is :

a

7

b

5

c

2

d

3

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Q8
PYQ

The appearance of colour in solid alkali metal halides is generally due to:

a

Interstitial positions

b

F-centres

c

Schottky defect

d

Frenkel defect

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Q9
PYQ

The number of octahedral void(s) per atom present in a cubic close-packed structure is

a

1

b

3

c

2

d

4

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