Match the following physical quantities with units.

Physical quantity Unit
A. Molarity 1.  mol kg–1 
B.  Molality 2. mol L–1
C.  Pressure 3.  Candela
D. Luminous intensity 4. Pascal

Codes:

A B C D
1. 1 4 2 3
2. 2 1 4 3
3. 1 4 3 2
4. 4 1 3 2
Hint: Unit of Luminous intensity=candela
 
Explanation:

A.
Molarity=concentration in mol L-1
Molarity=Number of molesVolume in litres

 
B. 
Molality=concentration in mole pre kg solvent
Molality=Number of molesMass of solvent (kg

 

C. The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N/m2 or kg. m-1 s-2). This special
name for the unit was added in 1971; before that, pressure in SI was expressed simply as N/m2.

 
D. Unit of luminous intensity=candela
The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540×1012 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian.

So, the correct answer is option 2.

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