STATES OF MATTER
TOP 10 MCQ
1. Dipole–dipole weak interactions are also called as [GPAT-2023 SHIFT-II]
(a) London forces
(b) Electrovalent forces
(c) Debye interactions
(d) Keesom forces
2. Which of the following is most appropriate to crystalline solid [GPAT-2022]
(a) Give diffraction bands
(b) Characteristics geometrical shapes
(c) Sharp melting point
(d) All of these
3. The relationship between the vapor pressure and the absolute temperature of a liquid expressed by [GPAT-2021]
(a) Biles Equation
(b) Lien and Kennon Equation
(c) Joule-Thomson Equation
(d) Clausius-Clapeyron Equation
4. Choose the wrong statement from the following with regard to Amorphous solids [GPAT-2020]
(a) Usually they are anisotropic
(b) They tend to flow when subjected to sufficient pressure
(c) Considered as super-cooled fluids
(d) They do not have definite melting point
5. The Crystal form of Sulphacetamide is [GPAT-2020]
(a) Rhombohedral
(b) Orthorhombic
(c) Monoclinic
(d) Triclinic
6. Identify the molecule which will not exhibit Dipole moment [GPAT-2019]
(a) Carbon dioxide
(b) Carbon monoxide
(c) Chloroform
(d) Ammonia
7. Keesom interactions has a force of [GPAT-2018]
(a) 0.5-1 kcal/mol
(b) 1-7 kcal/mol
(c) 1-3 kcal/mol
(d) None of these
8. Dipole-induced dipoles are also known as [GPAT-2018]
(a) London forces
(b) Keesom forces
(c) Debye forces
(d) Hydrogen bonding
9. The Gibb’s Phase rule [GPAT-2016]
(a) Holds only for systems with more than components
(b) Predicts that a maximum of three phase can exist in one components system
(c) Does not count phase compositions as intensive variables
(d) Does not count pressure and temperature as intensive variables
10. The equation dP/dT = ΔH_vap / RT² is known as [GPAT-2015]
(a) Clausius equation
(b) Clapeyron equation
(c) Clausius-Clapeyron equation
(d) Boltzmann-Planck equation
ANSWER KEY
| 1-d | 2-d | 3-d | 4-a | 5-b | 6-a | 7-b | 8-c | 9-b | 10-c |
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