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The molecular speeds of gaseous molecule...

The molecular speeds of gaseous molecules are analogous to those to rifle bullets , why do then odour of the gaseous molecular not detected so fast ?

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Even though the speeds of gaseous molecules are analogous to those of rifle bullets, these do no move in a straight path like bullets. Therefore, the molecules undergo collisions with one another at a very fast rate the follow zig - zag path. As a result, the odour cannot be detected at the same speed at which the molecules move.
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Knowledge Check

  • Gaseous SO_(3) molecule

    A
    is planner triangular in shape with three `sigma-` bonds from `sp^(2)-p` overlap and three `pi-` bonds formed by two `p pi-p pi` overlap and one `p pi- d pi` overlap.
    B
    is planner triangular in shape with three `sigma-` bonds from `sp^(2)-p` overlap and three `pi-` bonds formed by one `p pi-p pi` overlap and two `p pi-d pi` overlap.
    C
    is a pyramidal molecule with one double bond and two single bonds
    D
    planner triangular in shape with two double with two double bonds between S and O and one single bond

  • Assertion : V_("rms") and V_("mean") of gaseous molecules is nearly of the order of velocity of sound. Reason : The sound travels in air because of vibrational molecular motion.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

  • At what temperature the effective speed of gaseous H_2 molecules is equal to that of oxygen molecules at 320 K?

    A
    `20 K`
    B
    `50 K`
    C
    `40 K`
    D
    `30 K`

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