Solid State Test

Result

Solid State Test - 56

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Which one is an example of amorphous solid?

A
Glass

B
Salt

C
Cesium chloride

D
Calcium fluoride

Solution

Amorphous solids neither have ordered arrangement (i.e. no definite shape) nor have a sharp melting point like crystals, but when heated, they become pliable until they assume the properties usually related to liquids. It is, therefore, they are regarded as super-cooled liquids.

Glass is an amorphous solid.
Question 2
1 / -0

Space lattice of $$CaF_{2}$$ is:

A
Face centred cubic

B
Body centred cubic

C
Simple cubic

D
Hexagonal closed packing

Solution

Space lattice of $$CaF_{2}$$ is face centred cubic.
Hence A is correct option
Question 3
1 / -0

Structure similar to zinc blende is found in:

A
$$AgCl$$

B
$$NaCl$$

C
$$CuCl$$

D
$$TlCl$$

Solution

Zinc blende $$(ZnS)$$ has fcc structure and is an ionic crystal having $$4 : 4$$ co-ordination number.

Hence C is correct option
Question 4
1 / -0

How many space lattices are obtainable from the different crystal systems?

A
$$7$$

B
$$14$$

C
$$32$$

D
$$230$$

Solution

There are $$14$$ Bravais lattices (space lattices).
Hence B is correct option
Question 5
1 / -0

The close packing represents $$ABC\ ABC ....$$ order of:

A
Body centred cubic packing

B
Face centred cubic packing

C
Simple cubic packing

D
Hexagonal cubic closed packing

Solution

The system $$ABC\ ABC$$ is also referred to as face-centred cubic or fcc.
Question 6
1 / -0

What type of lattice is found in potassium chloride crystal?

A
Face centred cubic

B
Body centred cubic

C
Simple cubic

D
Simple tetragonal

Solution

Face-centred cubic lattice found in $$KCl$$ and $$NaCl$$.
Hence A is correct option
Question 7
1 / -0

What is the packing fraction of $$_{26}^{56} Fe$$?

(Isotopic mass = 55.92066)

A
-14.167

B
173.90

C
-14.187

D
-73.90

Solution

Packing fraction = $$\dfrac{\text{Isotopic mass - Mass number}}{\text{Mass number}} \times 10^4$$

                             = $$\dfrac{ 55.92066-56}{56}\times 10^4$$

                             = $$-14.167$$

Hence option (A) is correct.
Question 8
1 / -0

Atom A possesses higher values of packing fraction than atom B. The relative stabilities of A and B are:

A
A is more stable than B

B
B is more stable than A

C
A and B both are equally stable

D
Stability does not depend on packing fraction

Solution

The more negative the packing fraction of an element, the more stable should be the nucleus.
On the other hand, a positive packing fraction indicates that the nucleus should be less stable.
i.e. packing fraction is inversely proportional to the stability. So, the atom which has a lower value of packing fraction is stable.

Hence, option $$B$$ is correct.
Question 9
1 / -0

Points defects are present in

A
Ionic solids

B
Molecular solids

C
Amorphous solids

D
Liquids

Solution

Point defects are where an atom is missing or is in an irregular place in the ionic solids lattice structure. Point defects include self interstitial atoms, interstitial impurity atoms, substitutional atoms and vacancies

Hence A is correct option
Question 10
1 / -0

Which of the following is an amorphous solid

A
Glass

B
Diamond

C
Salt

D
Sugar

Solution

Such solids include glass, plastic, and gel. Quartz glass $$(SiO_2)$$ is an amorphous solid due to its short range order of constituent particles. Note Quartz is a crystalline solid while quartz glass is an amorphous solid.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Solid State Test - 56

Result

Solid State Test - 56

Score

-

Rank

-

SHARING IS CARING

Question 1

Glass

Salt

Cesium chloride

Calcium fluoride

Solution

Question 2

Face centred cubic

Body centred cubic

Simple cubic

Hexagonal closed packing

Solution

Question 3

$$AgCl$$

$$NaCl$$

$$CuCl$$

$$TlCl$$

Solution

Question 4

$$7$$

$$14$$

$$32$$

$$230$$

Solution

Question 5

Body centred cubic packing

Face centred cubic packing

Simple cubic packing

Hexagonal cubic closed packing

Solution

Question 6

Face centred cubic

Body centred cubic

Simple cubic

Simple tetragonal

Solution

Question 7

-14.167

173.90

-14.187

-73.90

Solution

Question 8

A is more stable than B

B is more stable than A

A and B both are equally stable

Stability does not depend on packing fraction

Solution

Question 9

Ionic solids

Molecular solids

Amorphous solids

Liquids

Solution

Question 10

Glass

Diamond

Salt

Sugar

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.