Q. No.Given below are two statements:
| Assertion (A): | Solids are rigid. |
| Reason (R): | The constituent particles of solids cannot move from their positions. |
| 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. | (A) is false but (R) is true. |
Subtopic: Introduction & Crystal System |
83%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | Graphite is a good conductor of electricity. However, diamond belongs to the category of insulators. |
| Reason (R): | Graphite is soft in nature whereas diamond is very hard and brittle. |
| 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. | (A) is false but (R) is true. |
Subtopic: Introduction & Crystal System |
67%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | The total number of atoms present in a simple cubic unit cell is one. |
| Reason (R): | Simple cubic unit cell has atoms at its corners, each of which is shared between eight adjacent unit cells. |
| 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. | (A) is false but (R) is true. |
Subtopic: Introduction & Crystal System |
86%
From NCERT
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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
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| Statement 1: | Glass considered a super cooled liquid. |
| Statement 2: | Glass has tendency to flow slowly. |
1. Statement 1 is true , statement 2 is false.
2. Statement 1 is false, statement 2 is true.
3. Both statements are false.
4. Both statements are true.
Subtopic: Introduction & Crystal System |
72%
From NCERT
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Incorrect statements regarding quartz glass are-
(a) This is a crystalline solid
(b) Refractive index is same in all the directions
(c) This has definite heat of fusion
(d) This is also called supercooled liquid
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
Subtopic: Introduction & Crystal System |
72%
From NCERT
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The correct statement(s) among the above is -
| a. | The coordination number of a cation occupying a tetrahedral hole is 4. |
| b. | The coordination number of a cation occupying an octahedral hole is 6. |
| c. | In Schottky defect, the density of the lattice decreases. |
1. a, b
2. b, c
3. a, b, c
4. a, c
Subtopic: Introduction & Crystal System |
75%
From NCERT
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Match the items in column I with the items in column II.
1. a-iv; b-iii; c-i, d-ii
2. a-ii; b-i; c-iv, d-iii
3. a-iv; b-ii; c-iv, d-i
4. a-iii; b-iv; c-i, d-ii
| Column I | Column II |
| a. Tin | i. Polar molecular solid |
| b. Urea | ii. Metallic solid |
| c. Zinc sulphide | iii. Covalent or network solid |
| d. Silicon carbide | iv. Ionic solid |
1. a-iv; b-iii; c-i, d-ii
2. a-ii; b-i; c-iv, d-iii
3. a-iv; b-ii; c-iv, d-i
4. a-iii; b-iv; c-i, d-ii
Subtopic: Introduction & Crystal System |
87%
From NCERT
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Match the items in column I with the items in column II.
| Column I | Column II |
| a. Hexagonal unit cells | i. a ≠ b ≠ c and α=γ=90°β≠90° |
| b. Face-centred unit cells | ii. 2 atoms per unit cells |
| c. Monoclinic unit cells | iii. 4 atoms per unit cell |
| d. End-centred unit cells |
iv. a = b ≠ c and α = β = 90° γ = 120° |
1. a-iv; b-ii; c-i, d-iii
2. a-ii; b-i; c-iv, d-iii
3. a-iv; b-iii; c-i, d-ii
4. a-iii; b-iv; c-i, d-ii
Subtopic: Introduction & Crystal System |
84%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
Match the items in column I with the items in column II.
1. a-iv; b-iii; c-i, d-ii
2. a-ii; b-i; c-iv, d-iii
3. a-iv; b-ii; c-iv, d-i
4. a-iii; b-iv; c-i, d-ii
| Column I | Column II |
| a. Potassium sulphate | i. Molecular (non-polar) solid |
| b. Benzene | ii. Ionic solid |
| c. Water | iii. Covalent or network solid |
| d. Graphite | iv. Hydrogen bonded molecular solid |
1. a-iv; b-iii; c-i, d-ii
2. a-ii; b-i; c-iv, d-iii
3. a-iv; b-ii; c-iv, d-i
4. a-iii; b-iv; c-i, d-ii
Subtopic: Introduction & Crystal System |
90%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
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