States of Matter-Solid State [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Chemistry]: Questions 47 - 53 of 119
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Question 47
Question MCQ▾
In the crystal of CsCl, the nearest neighbors of each Cs ion are?
Choices
Choice (4) | Response | |
---|---|---|
a. | 6 Cs ions | |
b. | 8 Cs ions | |
c. | 8 chloride ions | |
d. | 6 chloride ions |
Question 48
Question MCQ▾
A particular solid is very hard and has a high melting point. In solid state it is a non conductor of electricity. Classify the solid?
Choices
Choice (4) | Response | |
---|---|---|
a. | Molecular | |
b. | Metallic | |
c. | Ionic | |
d. | Amorphous |
Question 49
Question MCQ▾
X-rays of wavelength 1.54 A0 strike a crystal and are observed to be deflected at an angle of 22.5°. Assuming that n = 1, calculate the spacing between the planes of atoms that are responsible for this reflection?
Choices
Choice (4) | Response | |
---|---|---|
a. | 3.1 A° | |
b. | 4.2 A° | |
c. | 2.01 A° | |
d. | 3.71 A° |
Question 50
Question MCQ▾
In the simple cubic structure, what will be the contribution of atoms per unit cell?
Choices
Choice (4) | Response | |
---|---|---|
a. | 2 | |
b. | 3 | |
c. | 1 | |
d. | 4 |
Question 51
Question MCQ▾
How many chloride ions are there around sodium ion in sodium chloride crystal?
Choices
Choice (4) | Response | |
---|---|---|
a. | 6 | |
b. | 3 | |
c. | 4 | |
d. | 8 |
Question 52
Question MCQ▾
Which of the following crystal has the Antifluorite structure?
Choices
Choice (4) | Response | |
---|---|---|
a. | AgCl | |
b. | HgS | |
c. | AgI | |
d. | Na2O |
Question 53
Appeared in Year: 2016
Question MCQ▾
The decomposition of phosphine (PH3) on tungsten at low pressure is a first-order reaction. It is because the
Choices
Choice (4) | Response | |
---|---|---|
a. | Rate is proportional to the surface coverage | |
b. | Rate of decomposition is very slow | |
c. | Rate is inversely proportional to the surface coverage | |
d. | Rate is independent of the surface coverage |