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. |
Column I: Solids | Column II: Types |
a. Polyurethane | i. Crystalline |
b. Naphthalene | ii. Amorphous |
c. Benzoic acid | |
d. Teflon |
Statement 1: | Glass considered a super cooled liquid. |
Statement 2: | Glass has tendency to flow slowly. |
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. | In molten state, electricity is conducted by ions |
2. | In molten state, electricity is conducted by free electrons |
3. | In molten state, electricity is conducted by Pie electrons |
4. | None of the above |
1. | Each lattice point represents octahedral void |
2. | Generally, each lattice point represents one unit cell in a solid |
3. | Each lattice point represents one constituent particle of a solid |
4. | Each lattice point represents tetrahedral void |