By what factor does the average velocity of a gaseous molecule increase when the temperature (in K) is doubled
Options
(a) 2 (b) 2.8 (c) 4 (d) 1.4
Correct Answer:
1.4
Explanation:
No […]
If pressure is constant, the rate of diffusion varies with … proportional to density
Options
(a) directly (b) inversely (c) inversely to square root (d) directly to square root
Correct Answer:
inversely to […]
Average molar kinetic energy of CO and N₂ at same temperature is
Options
(a) KE₁ = KE₂ (b) KE₁ > KE₂ (c) KE₁ < KE₂ (d) can’t say anything. Both volumes are not […]
A gas can be liquefied
Options
(a) above its critical temperature (b) at its critical temperature (c) below its critical temperature (d) at any temperature
Correct Answer:
below its critical temperature
Explanation: […]
Which of the following does not show electrical conduction
Options
(a) Diamond (b) Graphite (c) Potassium (d) Sodium
Correct Answer:
Diamond
Explanation:
Potassium and sodium are metals so have mobile electrons. In graphite, […]
Naphthalene is a
Options
(a) ionic solid (b) covalent solid (c) metallic solid (d) molecular solid
Correct Answer:
molecular solid
Explanation:
No explanation available. Be the first to write the explanation […]
An ideal gas, obeying kinetic theory of gases can not be liquefied, because
Options
(a) it solidifies before becoming a liquid (b) forces acting between its molecules are negligible (c) its critical temperature […]
Absolute temperature is the temperature at which
Options
(a) all molecular motion ceases (b) volume ceases zero (c) mass becomes zero (d) none of these
Correct Answer:
all molecular motion ceases
Explanation: […]
In the van der Waals equation, ‘a’ signifies
Options
(a) intermolecular attraction (b) intramolecular attraction (c) attraction between molecules and wall of container (d) volume of molecules
Correct Answer:
intermolecular attraction
The temperature above which a gas cannot be liquefied is called as
Options
(a) inversion temperature (b) critical temperature (c) neutral temperature (d) Curie point
Correct Answer:
critical temperature
Explanation:
Critical temperature […]
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