Q. 374.2( 16 Votes )

Match the followi

Answer :

The units of the physical quantities are as follows:

(i) – (e)


As we all know that Molarity is defined as;



So, SI unit of Molarity is mole/litre.


(ii) – (d)


As we all know that Mole fraction is defined as given below;


Mole fraction of A =


And, both of the nominator and denominator and have same SI unit. Thus, the SI unit of mole fraction is unitless.


(iii) – (b)


SI unit of Mole is simply mol.


(iv) – (g)


Molality =


So, from the above formula we can conclude that the SI unit of Molality is molekg-1.


(v) – (c)


SI unit of Pressure is Pascal.


Although, it is defined as given below;


Pressure = .


Although, the SI unit of the above formula is . Which is also known as Pascal.


(vi) – (f)


In photometry, luminous intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminous function, a standardized model of the sensitivity of the human eye.


The SI unit of luminous intensity is the candela(cd).


(vii) – (a)


The formula of density is given below;



So, from the above formula, we can conclude that SI unit of Density is gml-1.


(viii) – (i)


As we all know that mass is measured in Kg and the SI unit of Mass is Kg.


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