Select Chapter Topics:
Q. No.Select the correct option based on statements below:
Assertion (A):
Due to Frenkel defect, the density of the crystalline solid decreases.
Reason (R):
In Frenkel defect cation and anion leave the crystal.
1.
Both (A) and (R) are true and (R) is the correct explanation of (A).
2.
Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.
(A) is true but (R) is false.
4.
Both (A) and (R) are false.
Subtopic: Imperfections in Solids & Semiconductors |
80%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Select the correct option based on statements below:
| Assertion (A): | The stability of a crystal is reflected by the magnitude of its melting point. |
| Reason (R): | Greater the intermolecular forces of attraction, the higher will be the stability and melting point of the substance. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Introduction & Crystal System |
87%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Select the correct option based on statements below:
| Assertion (A): | LiCl shows pink colour when heated in presence of lithium vapours. |
| Reason (R): | LiCl shows Frenkel defect. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Imperfections in Solids & Semiconductors |
64%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Select the correct option based on statements below:
| Assertion (A): | In an hcp structure, each sphere is surrounded by eight other spheres. |
| Reason (R): | ABC, ABC ................................ represents hcp structure. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Voids, Radius Ratio & Coordination Number |
64%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Incorrect(s) statement among the following:
| I. | Vacancy defect results in a decrease in the density of the substance. |
| II. | Interstitial defects results in an increase in the density of the substance. |
| III. | Impurity defect has no effect on the density of the substance. |
| IV. | Frenkel defect results in an increase in the density of the substance. |
1. (I, II)
2. (II, III)
3, (III, IV)
4. (I, IV)
Subtopic: Imperfections in Solids & Semiconductors |
57%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
The correct statements among the following about metals are-
| I. | Valence band overlaps with the conduction band. |
| II. | The gap between the valence band and conduction band is negligible |
| III. | The gap between the valence band and conduction band cannot be determined |
| IV. | Valence band may remain partially filled |
1. (I, II, III)
2. (II, III, IV)
3. (I, III, IV)
4. (I, II, IV)
Subtopic: Imperfections in Solids & Semiconductors |
57%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Under the influence of the electric field, which of the following statement is true about the movement of electrons and holes in a p-type semiconductor?
| I. | Electron will move towards the positively charged plate through electron holes |
| II. | Holes will appear to be moving towards the negatively charged plate |
| III. | Both electrons and holes appear to move towards the positively charged plate |
| IV. | Movement of electrons is not related to the movement of holes |
The correct choice among the given is-
1. (I, II)
2. (II, III)
3. (III, IV)
4. (I, IV)
Subtopic: Imperfections in Solids & Semiconductors |
75%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Consider the following statements about semiconductors.
| I. | Silicon doped with electron-rich impurity is a p-type semiconductor. |
| II. | Silicon doped with an electron-rich impurity is an n-type semiconductor. |
| III. | Delocalised electrons increase the conductivity of doped silicon. |
| IV. | An electron vacancy increases the conductivity of n-type semiconductor. |
1. I and II
2. II and III
3. III and IV
4. I and IV
Subtopic: Magnetic Behaviour of an Element/Compound |
85%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Which of the following statements is correct?
| I. | Ferrimagnetic substances lose ferrimagnetism on heating and become paramagnetic |
| II. | Ferrimagnetic substances do not lose ferrimagnetism on heating and remain ferrimagnetic |
| III. | Antiferromagnetic substances have domain structures similar to ferromagnetic substances and their magnetic moments are not canceled by each other |
| IV. | In ferromagnetic substances, all the domains get oriented in the direction of the magnetic field and remain as such even after removing the magnetic field |
The correct choice among the given is -
1. (I, II)
2. (II, III)
3. (III, IV)
4. (I, IV)
Subtopic: Imperfections in Solids & Semiconductors |
80%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Match the defects given in Column I with the statements given in Column II.
| Column I | Column II |
| A. Simple vacancy defect | 1. Shown by non-ionic solids and increases the density of the solid |
| B. Simple interstitial defect | 2. Shown by ionic solids and decreases the density of the solid |
| C. Frenkel defect | 3. Shown by non-ionic solids and decreases the density of the solid |
| D. Schottky defect | 4. Shown by ionic solids and density of the solid remains the same |
Codes
| A | B | C | D | |
| 1. | 3 | 1 | 4 | 2 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
Subtopic: Imperfections in Solids & Semiconductors |
82%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Select Chapter Topics:
© 2024 GoodEd Technologies Pvt. Ltd.