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Natural polymers occur in nature and can be extracted. They are often water-based. Examples of naturally occurring polymers are silk, wool, DNA, cellulose and protein.

Cellulose , another natural polymer, is the main structural component of plants. Most natural polymers are condensation polymers, and in their formation from monomers water is a by-product.

It is a natural or artificial chemical compound consisting of large molecules.

Hello,

Only B.Sc graduates in Forensic Sciences or relevant subjects are eligible for M.Sc Forensic Sciences.Each institute has its own eligiblity criteria.In LPU the eligibility is that a candidate must have passed B.Sc. Forensic Science or Biology or Physics or Chemistry or Biochemistry or Microbiology or Biotechnology or B.Pharm or MBBS or BDS or BHMS or its equivalent with 60% aggregate.In Government Institute of Forensic Science, Nagpur a candidate must have passed B.Sc Forensic Sciences.Likewise the eligibility may vary but you are not eligible for it.

The average molecular weight of the sample will be (b) 4600

Explanation:

The average molecular weight is given by the relation,

W = (WM + WM)/(W + W)

W = 2

W = 3

M = molar mass of 1st fraction = 100 x 28 = 2800

M = molar mass of 1st fraction = 200 x 28 = 5600

putting these values in the given eqn

W = (2x2800 + 3x5600)/(2+3)

= (5600 + 16800)/5

= 22400/5

= 4480

≈ 4600

Hence the average molecular weight of the sample will be 4600