Description : Is absolute zero really the lowest possible temperature everywhere in the universe?
Last Answer : Zero Point Energy implies that 0 Kelvin may not be the true lower limit.
Description : At absolute zero temperature, what will be the kinetic energy of the molecules? -Do You Know?
Last Answer : answer:
Description : What does Every object at a temperature above absolute zero? -Do You Know?
Description : Who invented the absolute temperature scale ?
Last Answer : Kelvin, the inventor of the absolute temperature scale.
Description : The volume (V) of a mass of gas varies directly as its absolute temperature (T) and inversely as the pressure (P) applied to it. The gas occupies a vo
Last Answer : The volume (V) of a mass of gas varies directly as its absolute temperature (T) and inversely as ... and pressure are 200 ml and 250 Pa respectively?
Description : What graph shows the relationship between a star's surface temperature and it's absolute magnitude?
Last Answer : You need to do this. It is homework and we don't have the graph. You teacher is looking for your critical thinking skills and notours.
Description : The absolute zero is a temperature at which ___________
Last Answer : Molecular motion in gas would cease.
Description : What does Every object at a temperature above absolute zero?
Last Answer : – Radiates energy
Description : Dry-bulb temperature is: a. The absolute temperature corresponding to the atmospheric pressure b. The same as the wet-bulb temperature if the relative humidity is less than 100% c. Not required ... d. The temperature of the air measured with an ordinary thermometer e. The dew point temperature
Last Answer : Answer: D
Description : Dew point can be best defined as the: a. Absolute temperature at which air, upon heating, will evaporate moisture b. . Percentage of moisture that air can hold at a given temperature ... to condense should the temperature drop further e. . Atmospheric pressure at which air will condense moisture
Description : Absolute or specific humidity is a) the actual mass of moisture present in a specific amount of air b) the maximum mass of moisture that a specific amount of air can hold c) the ratio of ... a specific amount of air at that absolute temperature e) a specific amount of air saturated with moisture
Last Answer : ANSWER : A
Description : The absolute zero is a temperature at which ______. (1) molecular motion in a gas would cease (2) water freezes (3) all gases become liquid (4) all gases become solid
Last Answer : (1) molecular motion in a gas would cease Explanation: Absolute zero is the lowest possible temperature where nothing could be colder and no heat energy remains in a substance.
Description : The average kinetic energy of the molecules of an ideal gas is directly proportional to – (1) Velocity of Molecules (2) Mass of Molecules (3) Absolute temperature of the gas (4) Temperature of environment
Last Answer : (3) Absolute temperature of the gas Explanation: The average kinetic energy of gas molecules is directly proportional to absolute temperature only. This implies that all molecular motion ceases if the temperature is reduced to absolute zero.
Description : Absolute Zero is defined as – (1) The temperature at which all molecular motion ceases (2) At which water boils at 298K (3) At which liquid Helium boils (4) At which the volume becomes zero
Last Answer : (1) The temperature at which all molecular motion ceases Explanation: Absolute zero is the temperature at which all motion in matter stops and is thought to be unreachable. It is ... nature have minimal vibrational motion, retaining only quantum mechanical, zero-point energy-induced particle motion.
Last Answer : (1) molecular motion in a gas would cease Explanation: Absolute zero is the lowest possible temperature where nothing could be colder and no heat energy remains in a substance. It is the point at which all motion in matter stops.
Description : The temperature at which the catalytic activity of the catalyst is maximum, is called (1) room temperature (2) critical temperature (3) absolute temperature (4) optimum temperature
Last Answer : d) optimum temperature
Description : The absolute zero is a temperature at which - (1) Molecular motion in a gas would cease (2) Water freezes (3) All gases become liquid (4) All gases become solid
Last Answer : (1) Molecular motion in a gas would cease Explanation: Absolute zero is the lowest possible temperature where nothing could be colder and no heat energy remains in a substance. That temperature Molecular motion in a gas would cease.
Description : One item listed on the name plate of a cargo pump motor is 'degrees centigrade rise.' This number is based on _____________. A. normal temperature change from cold to hot B. an ambient temperature ... . minimum heat rise from no load to full load D. maximum degrees centigrade rise from absolute zero
Last Answer : Answer: B
Description : Absolute temperature in Kelvin. A. ˚C +273 B. ˚C+75 C. ˚C+19 D. ˚C +290
Last Answer : A. ˚C +273
Description : At absolute zero temperature, what will be the kinetic energy of the molecules?
Last Answer : Zero
Last Answer : Radiates energy
Description : What is meant by absolute zero temperature?
Last Answer : The temperature -273^oC is called absolute zero or zero Kelvin.
Description : With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature). (A) Increases (B) Remains unchanged (C) Decreases (D) Decreases linearly
Last Answer : (A) Increases
Description : When the __________ the relative humidity of air decreases, despite an increase in the absolute humidity. (A) Temperature rises (B) Pressure rises (C) Temperature falls (D) Pressure falls
Last Answer : (A) Temperature rises
Description : Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a (A) Higher dew point (B) Higher absolute (specific) humidity (C) Higher relative humidity (D) Higher wet bulb temperature
Last Answer : (C) Higher relative humidity
Description : The relative humidity of air decreases in-spite of an increase in the absolute humidity, when the (A) Temperature rises (B) Pressure rises (C) Temperature falls (D) Pressure falls
Description : The Knudsen diffusivity is proportional to (where, T = absolute temperature) (A) √T (B) T 2 (C) T (D) T 4
Last Answer : (A) √T
Description : The energy radiated from a surface Q at absolute temperature T is related as (A) Q ∝ T 2 (B) Q ∝ T 4 (C) Q ∝ T 3 (D) None of these
Last Answer : (B) Q ∝ T
Description : Wavelength corresponding to the maximum energy is inversely proportional to the absolute temperature. This is __________ law. (A) Stefan's (B) Dalton's (C) Wien's (D) Kirchoff’s
Last Answer : (C) Wien's
Description : Stefan-Boltzmann law which describes the radiation heat transfer states that, it is proportional to (where, t = temperature in °C T = absolute temperature in ° K) (A) t 4 (B) T 4 (C) 1/t 4 (D) 1/T 4
Last Answer : (B) T
Description : The existence of a gas is vanished atA. N.T.P. B. At any temperature C. Absolute zero D. 0°C E. None of the above
Last Answer : C. Absolute zero
Description : The thermal radiation emitted by a body is proportional to T n , where T is its absolute temperature. The value of 'n' is exactly 4 for (A) Black painted bodies only (B) All bodies (C) Polished bodies only (D) A black body
Last Answer : (B) All bodies
Description : Absolute viscosity of a fluid is a function of the __________ of the fluid. (A) Motion (B) Pressure & temperature (C) Shearing stress (D) Both (B) & (C)
Last Answer : (D) Both (B) & (C)
Description : In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where, T = absolute temperature). (A) 1/√T (B) 1/T (C) √T (D) T
Last Answer : (C) √T
Description : Rate constant 'k' and absolute temperature 'T' are related by collision theory (for bimolecular) as (A) k ∝ T 1.5 (B) k ∝ exp(-E/RT) (C) k ∝ √T (D) k ∝ T
Last Answer : (C) k ∝ √T
Description : Pick out the wrong statement. (A) Cp of monatomic gases such as metallic vapor is about 5 kcal/kg.atom (B) The heat capacity of solid inorganic substance is exactly equal to the ... isolated system (D) At absolute zero temperature, the heat capacity for many pure crystalline substances is zero
Last Answer : (C) There is an increase in entropy, when a spontaneous change occurs in an isolated system
Description : Translational kinetic energy of molecules of an ideal gas is proportional to (where, T = absolute temperature of the gas) (A) T (B) √T (C) T2 (D) 1/√T
Last Answer : (A) T
Description : As the temperature is lowered towards the absolute zero, the value of ∂(∆F)/∂T, then approaches (A) Unity (B) Zero (C) That of the heat of reaction (D) Infinity
Last Answer : B) Zero
Description : At absolute zero temperature, the __________ of the gas is zero. (A) Pressure (B) Volume (C) Mass (D) None of these
Last Answer : (B) Volume
Description : As the temperature is lowered towards the absolute zero, the value of the quantity (∂∆F/∂T) approaches (A) Zero (B) Unity (C) Infinity (D) None of these
Last Answer : (A) Zero
Description : Critical compressibility factor for all substances (A) Are more or less constant (vary from 0.2 to 0.3) (B) Vary as square of the absolute temperature (C) Vary as square of the absolute pressure (D) None of these
Last Answer : (A) Are more or less constant (vary from 0.2 to 0.3)
Description : Which of the following will increase the volume of a real gas by four times? (A) Doubling the absolute temperature as well as pressure of the gas (B) Reducing pressure to one fourth at ... temperature to one fourth at constant pressure (D) Reducing the temperature to half and doubling the pressure
Last Answer : (B) Reducing pressure to one fourth at constant temperature
Description : The third law of thermodynamics states that the (A) Heat capacity of a crystalline solid is zero at absolute zero temperature (B) Heat transfer from low temperature to high temperature source is ... without external work (C) Gases having same reduced properties behaves similarly (D) None of these
Last Answer : (A) Heat capacity of a crystalline solid is zero at absolute zero temperature
Description : "At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero". This follows from the (A) Third law of thermodynamics (B) Second law of thermodynamics (C) Nernst heat theorem (D) Maxwell's relations
Last Answer : (A) Third law of thermodynamics
Description : The absolute entropy for all crystalline substances at absolute zero temperature is (A) Zero (B) Negative (C) More than zero (D) Indeterminate
Description : Absolute zero temperature signifies the (A) Minimum temperature attainable (B) Temperature of the heat reservoir to which a Carnot engine rejects all the heat that is taken in (C) Temperature of the heat reservoir to which a Carnot engine rejects no heat (D) None of these
Last Answer : (C) Temperature of the heat reservoir to which a Carnot engine rejects no heat
Description : The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzmann’s constant, T = absolute temperature) (A) √(2KT/m) (B) √(3KT/m) (C) √(6KT/m) (D) 3KT/m
Last Answer : (B) √(3KT/m)
Description : Third law of thermodynamics is helpful in (A) Prediction of the extent of a chemical reaction (B) Calculating absolute entropies of substances at different temperature (C) Evaluating entropy changes of chemical reaction (D) Both (B) and (C)
Last Answer : D) Both (B) and (C)
Description : Entropy, which is a measure of the disorder of a system, is: (A) Independent of pressure (B) Independent of temperature (C) Zero at absolute zero temperature for a perfect crystalline substance (D) All (A), (B) & (C)
Last Answer : (C) Zero at absolute zero temperature for a perfect crystalline substance