Free Charles's Law MCQs with Answers
22 Charles's Law MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
At constant pressure, the volume of a fixed mass of gas is directly proportional to its absolute temperature. Questions involve the Kelvin scale, the equation V₁/T₁ = V₂/T₂, volume-temperature graphs, and the need to distinguish Charles's law from Boyle's law, which relates pressure and volume.
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22 questions · page 1 of 2
- A. 54 degrees C
- B. 300 degrees C
- C. 327 degrees C
- D. 600 degrees C
Explanation: Charles's law must be applied in kelvin, so the initial temperature is 27 plus 273, which is 300 K.
Correct answer: 327 degrees C- A. inversely proportional to the absolute temperature
- B. directly proportional to the absolute temperature
- C. independent of temperature
- D. proportional to the square of the temperature
Explanation: Volume rises in direct proportion to absolute temperature, so a graph of V against T in kelvin is a straight line that extrapolates back…
Correct answer: directly proportional to the absolute temperature- A. 400 cm3
- B. 1411 cm3
- C. 200 cm3
- D. 600 cm3
Explanation: Converting to kelvin gives 300 K and 400 K, and the volume scales in the same ratio, so 300 multiplied by 400 divided by 300 gives 400…
Correct answer: 400 cm3- A. 1785
- B. 1787
- C. 1880
- D. 1885
Explanation: Jacques Charles studied the relationship between gas volume and temperature around 1787, although the law was later published and…
Correct answer: 17875. Pressure remain constant, at which temperature the volume of gas becomes twice of what it is at 0°C?
- A. 546 °C
- B. 546 K
- C. 200°C
- D. 273 K
Explanation: At constant pressure, Charles's law states that volume is proportional to absolute temperature.
Correct answer: 546 K- A. Boyles law
- B. Charles law
- C. Daltons law
- D. Grahams law
Explanation: Charles's law states that the volume of a fixed mass of gas is directly proportional to its absolute temperature at constant pressure, V/T…
Correct answer: Charles law- A. Parabola
- B. Hyperbola
- C. Straight line
- D. Circle
Explanation: At constant pressure (isobaric process), the graph between volume (V) and temperature (T) is typically a straight line.
Correct answer: Straight line- A. Boyle's law
- B. Isothermal process
- C. General gas law
- D. Charles law
- E. Henry's law
Explanation: Charles's law, or the law of volumes, was found in 1787 by Jacques Charles.
Correct answer: Charles law- A. 3.00 dm3
- B. 3.43 dm3
- C. 3.08 dm3
- D. 3.25 dm3
- E. 0.54 dm3
Explanation: V1=3.8 dm3 ; T1= 35 +273=308K V2=?; T2=5+273=278K V1/T1=V2/T2 3.8/308=V2/278 V2=3.43 dm3
Correct answer: 3.43 dm310. Pressure remaining constant, at which temperature volume of gas will become twice the volume at 0oC?
- A. 546 oC
- B. 200 oC
- C. 546 K
- D. 273 K
Explanation: According to the general gas equation (PV=nRT), the volume of a gas is directly proportional to its temperature.
Correct answer: 546 K- A. 2.3 cm³
- B. 4 cm³
- C. 2 cm³
- D. 3.4 cm³
Explanation: According to Charles' law: V1 / T1 = V2 / T2 Where V = volume and T = temperature in Kelvins 1°C change in temperature = 1 K change 640 /…
Correct answer: 2.3 cm³- A. Zero Fahrenheit
- B. Zero Kelvin
- C. Absolute Fahrenheit
- D. All of these options are correct
Explanation: a new temperature scale called Kelvin scale is used for Charles law. This scale begins with 0 Kelvin (-273 degrees) so is also called zero…
Correct answer: Zero Kelvin- A. Pressure
- B. Temperature
- C. Volume
- D. Number of moles
Explanation: B is the correct option because In Charles's law volume occupied by the gas is directly proportional to the temperature.
Correct answer: Temperature- A. Contracts
- B. Expands
- C. Shrink
- D. Squeezed
Explanation: As temperature increases the volume of the gas also increases.
Correct answer: Expands- A. Pressure
- B. Temperature
- C. Number of moles
- D. All of these
Explanation: Option A is incorrect as greater pressure decreases the volume of a gas.
Correct answer: Number of moles- A. 1L
- B. 0.1L
- C. 1.05 L
- D. 1.50L
Explanation: This is the correct solution given below: P1 = 1 atm V1 = 0.5 L ( 0.5 dm3 ) T1 = 0o C ( 0 + 273 = 273 K) P2 = 1 atm T2 = 300o C ( 300 +…
Correct answer: 1.05 L- A. 3°C
- B. 819°C
- C. 819K
- D. 3K
Explanation: The volume of a gas at STP is 10 dm3. If the pressure is kept constant, the volume of the gas will increase as the temperature increases.
Correct answer: 819K- A. Increases
- B. Remains unchanged
- C. Decreases
- D. First increases then decreases
Explanation: On heating,the temperature of gas will increase.So,its volume will also increase as temperature is directly proportional to volume at…
Correct answer: Increases- A. i only
- B. iii only
- C. i and ii only
- D. i and iii only
- E. ii and iii only
Explanation: The explanation for this question will be added soon.
Correct answer: iii only- A. Pressure
- B. Temperature
- C. Volume
- D. Number of moles
Explanation: Correct option is B. Charles's law states that: "the volume of a given mass of gas is directly proportional to its absolute temperature…
Correct answer: TemperatureCharles's Law MCQs: common questions
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