Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Rahul kumar Best Answer
Bulk density = Total weight / Total volume Considering 100 cm3 of rock, it will contain 40 cm3 olivine, 25 cm3 orthopyroxene and 35 cm3 clinopyroxene. Total weight= (Volume of olivine × Density of olivine) + (Volume of orthopyroxene × Density of orthopyroxene) + (Volume of clinopyroxene × Density of clinopyroxene) = (40 × 3.65) + (25 × 3.11) + (35 × 3.59) = 349.4 gm Bulk density = Total weight / Total volume = 349.4 gm / 100 cm3 = 3.494 gm/cm3 So, the answer should be 3.494 gm/cm3