Chandra Shekhar unit is related to
time
length
mass
amount of substance
As we have learnt,
Units of Mass -
Chandra Shekhar Unit 1 CSU = 1.4 times the mass of sun = 2.8 x 1030 kg
Metric tonne 1 metric tonne = 1000 kg
Quintal 1 Quintal = 100 kg
Atomic mass unit (amu) 1 amu = 1.67 x 10-27 kg
so, correct ans- Mass