Home
Class 11
CHEMISTRY
Statement-1. At zero degree Kelvin, the ...

Statement-1. At zero degree Kelvin, the volume occupied by a gas is negligible.
Statement-2. All molecullar motion ceases at 0 K.

A

Statement-1 is correct, Statement-2 is correct , Statement-2 is the correct explanation for Statement-1.

B

Statement-1 is correct, Statement-2 is correct , Statement-2 is not a correct explanation of Statement-1.

C

Statement-1 is correct, Statement-2 is incorrect.

D

Statement-1 is incorrect, Statement-2 is correct.

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the statements provided in the question, we will break down each statement and evaluate its validity step by step. ### Step 1: Understanding Statement-1 **Statement-1:** At zero degree Kelvin, the volume occupied by a gas is negligible. - At absolute zero (0 K), according to the ideal gas law, the volume of a gas theoretically approaches zero. This is because the gas particles have minimal kinetic energy, and they occupy a very small volume. Therefore, this statement is **true**. ### Step 2: Understanding Statement-2 **Statement-2:** All molecular motion ceases at 0 K. - At 0 K, it is true that the thermal motion of particles is minimized. However, quantum mechanics tells us that particles still possess zero-point energy, which means that they do not completely stop moving; they have some residual motion. Therefore, this statement is **false**. ### Step 3: Conclusion - Since Statement-1 is true and Statement-2 is false, we can conclude that the overall evaluation of the statements is that Statement-1 is correct, while Statement-2 is incorrect. ### Final Answer - **Statement-1 is true, Statement-2 is false.**
To analyze the statements provided in the question, we will break down each statement and evaluate its validity step by step. ### Step 1: Understanding Statement-1 **Statement-1:** At zero degree Kelvin, the volume occupied by a gas is negligible. - At absolute zero (0 K), according to the ideal gas law, the volume of a gas theoretically approaches zero. This is because the gas particles have minimal kinetic energy, and they occupy a very small volume. Therefore, this statement is **true**. ### Step 2: Understanding Statement-2 ...
Promotional Banner

Topper's Solved these Questions

  • STATES OF MATTER : GASES AND LIQUIDES

    PRADEEP|Exercise VIII. ASSERTION-REASON TYPE QUESTIONS (TYPE-II)|12 Videos

  • STATES OF MATTER : GASES AND LIQUIDES

    PRADEEP|Exercise VII. NUMERICAL VALUE TYPE QUESTIONS|1 Videos

  • SOME p-BLOCK ELEMENTS

    PRADEEP|Exercise Competition Focus (JEE( Main and Advanced)/Medical Entrance) VIII. Assertion-Reason Type Questions (Type I)|23 Videos

  • STATES OF MATTER: SOLID MATTER

    PRADEEP|Exercise COMPETITION FOCUS (ASSERTION-REASON)|17 Videos

Similar Questions

Explore conceptually related problems

Statement-1: Specific heat capacities of all substance approach zero as T to O Statement-2: Molecular motion ceases at very low temperature.

Statement -1: Entropy change in reversible adiabatic expansion of an ideal gas is zero. Statement-2: The increase in entropy due to volume increase just compensates the decrease in entropy due to fall in temperature.

Statement -1 : In NaCl crystal , all the octahdefral voids are occupied by Na^(+) ions. Statement-2 : The number of octahedral voids is equal to the number of Cl^(-) ions in the packing .

Statement-1: If the pressure and temperature of a gas sample are doubled then the volume of the gas will remain unchanged. Statement-2: Molar specific heat for an adiabatic process is zero. Statement-3: Heat energy is a path function.

Statement-1 : At low pressure and high temperature real gas approaches the ideal gas behaviour. and Statement-2 : At low prossure and high temperature the molecules are negligible.

Knowledge Check

  • Assertion : At zero degree Kelvin, the volume occupied by a gas is negligible. Reason : All molecular motion ceases at 0 K.

    A
    A and R both are correct, and R is correct explanation of A.
    B
    A and R both are correct, but R is not correct explanation of A.
    C
    A is true but R is false.
    D
    A is false but R is true.

  • Assertion : At zero degree kelvin, the volume occupied by a gas is negligible. Reason : All molecular motion ceases at 0 K .

    A
    If both assertion and reason are correct and reason is correct explanation for assertion
    B
    If both assertion and reason are correct and reason is not correct explanation for assertion
    C
    If assertion is correct but reason is incorrect
    D
    If assertion and reason are both incorreect.

  • Assertion : At zero kelvin the volume occupied by a gas is negligible Reason : All translational molecular motion cease at 0 K

    A
    Both A and R are true and R is the correct explanation of A
    B
    Both A and R are true but R is not a correct explanation of A
    C
    A is true but R is false
    D
    A is false but R is true