Petroleum Refinery Engineering
Refractive index of a petrofuel which is the ratio of velocity of light in air to its velocity in the petrofuel gives an indication if its

Both A & B
Molecular weight
Neither A nor B
Aromatics content

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Petroleum Refinery Engineering
Petroleum deposits are detected by the.

Oil seepage at the surface of the earth
Measuremet of density, elasticity and magnetic & electric properties of the rock in the crust of the earth
All of these
Age & nature of rocks inside the crust of the earth

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