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The unitless quantity is...

The unitless quantity is

A

velocity gradient

B

Pressure gradient

C

Displacement gradient

D

Force gradient

Text Solution

Verified by Experts

The correct Answer is:
C
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A unitless quantity is dimensionless. Is the statement true? If yes, explain.

Knowledge Check

  • Vapour density of a compound is defined as the ratio of mass of a certain volume of gas to the mass of the same volume of hydrogen gas under conditions of temperature and pressure. Vapour density =("Mass of certain of gas"(22.4L)"at STP")/("Mass of same volume of" H_(2) "gas"(22.4L)"at STP") =(Mw)/(2) i.e., Molecular mass of gas=Vapour density xx2 Vapour density is a unitless quantity it is unaffected by variation of temperature and pressure. Which of the following two substances have same vapour density?

    A
    Glucose
    B
    Fructose
    C
    Sucrose
    D
    Starch.

  • Vapour density of a compound is defined as the ratio of mass of a certain volume of gas to the mass of the same volume of hydrogen gas under conditions of temperature and pressure. Vapour density =("Mass of certain of gas"(22.4L)"at STP")/("Mass of same volume of" H_(2) "gas"(22.4L)"at STP") =(Mw)/(2) i.e., Molecular mass of gas=Vapour density xx2 Vapour density is a unitless quantity it is unaffected by variation of temperature and pressure. Let NH_(4)HS(s)hArrNH_(3)(g)+H_(2)S(g) The vapour density of the mixture will be:

    A
    equal to that of `NH_(4)HS`
    B
    lesser than that of `NH_(4)HS`
    C
    greater than that of `NH_(4)HS`
    D
    cannot be predicted.

  • Vapour density of a compound is defined as the ratio of mass of a certain volume of gas to the mass of the same volume of hydrogen gas under conditions of temperature and pressure. Vapour density =("Mass of certain of gas"(22.4L)"at STP")/("Mass of same volume of" H_(2) "gas"(22.4L)"at STP") =(Mw)/(2) i.e., Molecular mass of gas=Vapour density xx2 Vapour density is a unitless quantity it is unaffected by variation of temperature and pressure. The vapour density of a mixture containing NO_(2) and N_(2)O_(4) is 38.3 at 27^(@)C . the moles of NO_(2) in 100 moles of mixture are:

    A
    33.48
    B
    53.52
    C
    38.3
    D
    76.6

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    In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as (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 assertion and reason are false. Q. Assertion: Strain is a unitless quantity. Reason: Strain is equivalent to force.

    Vapour density of a compound is defined as the ratio of mass of a certain volume of gas to the mass of the same volume of hydrogen gas under conditions of temperature and pressure. Vapour density =("Mass of certain of gas"(22.4L)"at STP")/("Mass of same volume of" H_(2) "gas"(22.4L)"at STP") =(Mw)/(2) i.e., Molecular mass of gas=Vapour density xx2 Vapour density is a unitless quantity it is unaffected by variation of temperature and pressure. At STP, 5.6 litre of a gas weighs 60g. the vapour density of gas is:

    Vapour density of a compound is defined as the ratio of mass of a certain volume of gas to the mass of the same volume of hydrogen gas under conditions of temperature and pressure. Vapour density =("Mass of certain of gas"(22.4L)"at STP")/("Mass of same volume of" H_(2) "gas"(22.4L)"at STP") =(Mw)/(2) i.e., Molecular mass of gas=Vapour density xx2 Vapour density is a unitless quantity it is unaffected by variation of temperature and pressure. Vapour density of a metal chloride is 66. its oxide contains 53% metal. the atomic mass of the metal is:

    Assertion : Strain is a unitless quantity. Reason : Strain is equivalent to force

    STATEMENT 1: Two quantities with different dimensions may have same unit. STATEMENT-2 Two quantities with different units may have same dimensions STATEMENT-3 Unitless quantities must be dimensionless too

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