Solid State Test

Result

Solid State Test - 69

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Weekly Quiz Competition

Question 1
1 / -0

Ammonium chloride crystallizes in a body centred cubic lattice with edge length of unit cell of $$390$$ pm. If the size of chloride ion is $$180$$ pm, the size of ammonium ion would be:

A
$$158$$ pm

B
$$174$$ pm

C
$$142$$ pm

D
$$126$$ pm

Solution
Question 2
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Choose the correct statements.

A
equivalent points in unit cells of a periodic lattice lie on a Bravais lattice

B
equivalent points in unit cells of a periodic lattice do not lie on a Bravais lattice

C
There are four Bravais lattices in two dimensions

D
There are five Bravais lattices in three dimensions

Solution
Question 3
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Which of the following sets of axial angles and axial lengths represent the maximum number in Bravais lattices?

A
$$\alpha = \beta = \gamma = 90^0$$ and $$a=b\neq c$$

B
$$\alpha = \beta = \gamma = 90^0$$ and $$a\neq b\neq c$$

C
$$\alpha = \beta = \gamma \neq 90^0$$ and $$a=b= c$$

D
$$\alpha = \beta = \gamma = 90^0$$ and $$a=b= c$$
Question 4
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If $$R$$ is the radius of the sphere in the close packed arrangement and $$r$$ is the radius of the tetrahedral void then :

A
$$R=0.224r$$

B
$$r=0.225R$$

C
$$r=0.414R$$

D
$$R=0.414r$$
Question 5
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Which one is called pseudo solid?

A
$$CaF_2$$

B
$$Glass$$

C
$$NaCl$$

D
All of these

Solution
Question 6
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If oxidation states of A , B and C respectively are $$+2, +3$$ and $$-2$$ then the possible formula of the compound is

A
$$A_3(B_2C)_2$$

B
$$A_2(BC)_3$$

C
$$B_3(AC_3)_2$$

D
$$A_3(BC_3)_2$$

Solution
Question 7
1 / -0

The density of $$Ca{F_2}$$ (fluorine structure) is $$3.18$$g /$${cm^{3}}$$. The length of the side of the unit cell is:

A
$$253$$pm

B
$$344$$pm

C
$$546$$pm

D
$$273$$pm

Solution
Question 8
1 / -0

In a solid lattice, the cation has left a lattice site and is located at interstitial position, the lattice defect is ____

A
Interstitial defect

B
Vacancy defect

C
Frenkel defect

D
Schottky defect
Question 9
1 / -0

The number of octahedral voids present in 234 g of NaCl is:

A
$$N_{A}$$

B
$$4N_{A}$$

C
$$16N_{A}$$

D
$$\cfrac{N_{A}}{4}$$
Question 10
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Metallic or non-stoichiometric (or interstitial) hydrides are formed by:

A
Many $$d-$$block and $$f-$$block elements.

B
Many $$s-$$block elements

C
Many $$p-$$block elements

D
None of these

Solution