Solid State Test

Result

Solid State Test - 15

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
4 / -1

CsCl crystallises in body centred cubic lattice. If 'a' is its edge length, then which of the following expression is correct ?

A
r_Cs⁺ + r_Cl^- = 3a

B
r_Cs⁺ + r_Cl^- = 3a/2

C

D
r_Cs⁺ + r_Cl^- = √3a

Solution
Question 2
4 / -1

A metal has bcc structure and the edge length of its unit cell is 3.04 Å. The volume of the unit cell in cm³ will be

A
1.6 × 10²¹ cm³

B
2.81 × 10^-23 cm³

C
6.02 × 10^-23 cm³

D
6.6 × 10^-24 cm³

Solution
Question 3
4 / -1

KBr crystallises in NaCl type of crystal lattice and its density is 2.75 g/cm³. Number of unit cell of KBr are

A
3.6 × 10¹⁸

B
3.6 × 10¹⁶

C
2.34 × 10²³

D
6.02 × 10²⁴
Question 4
4 / -1

Volume occupied by single CsCl ion pair in a crystal is 7.014 × 10^-23 cm³. The smallest Cs-Cs internuclear distance is equal to length of the side of the cube corresponding to volume of one CsCl ion pair. The smallest Cs to Cs internuclear distance is nearly

A
4.4Å

B
4.3 Å

C
4 Å

D
4.5 Å

Solution
Question 5
4 / -1

An organic compound crystallises in an orthorhombical cell in the ratio of 2 : 1. The dimensions of cell are 12.05, 15.05 and 2.69 Å and density is 1.419 g /cm³, find molar density of the compound

A
207 g/ mol

B
209 g/ mol

C
308 g/ mol

D
317 g/ mol

Solution
Question 6
4 / -1

Lithium forms body-centred cubic structure. The length of the side of its unit cell is 351 pm. Atomic radius of the lithium will be

A
75 pm

B
300 pm

C
240 pm

D
152 pm

Solution
Question 7
4 / -1

Silver (atomic weight = 108 g mol^-1 ) has a density of 10.5 g cm^-3. The number of silver atoms on a surface of area 10^-12 m² can be expressed in scientific notation as y × 10^x . The value of x is

A
3

B
5

C
7

D
9

Solution
Question 8
4 / -1

Copper crystallises in fcc lattice with a unit cell edge of 361 pm. The radius of copper atom is

A
181 pm

B
108 pm

C
128 pm

D
157 pm
Question 9
4 / -1

The first order reflection (n = 1) from a crystal of the X-ray from a copper anode tube (λ =1.54 Å ) occurs at an angle of 45°. What is the distance between the set of plane causing the diffraction?

A
0.1089 mm

B
0.1089 m

C
0.905 Å

D
1.089 × 10^-9 m

Solution
Question 10
4 / -1

The edge length of a face centred cubic cell of an ionic substance is 508 pm. If the radius of the cation is 110 pm, the radius of the anion is

A
288 pm

B
398 pm

C
618 pm

D
144 pm