Experiment No 16 : To determine the sinking time and water holding capacity of Absorbent cotton wool I.P.
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| experiment 16 |
Questions
1 State the chemical nature of Absorbent Cotton Wool
and the question numbers
2. Write the dimensions of sinking time basket
3 State the 1P standards for sinking time and water holding
capacity
4. What do you mean by sinking time?
5 What do you mean by water holding capacity ?
6. Describe "Absorbent cotton as per IP 1996
7. How will you pack "Absorbent cotton as per IP 19967
8.Write the category of "Absorbent cotton
9.How will you prepare "Absorbent cotton from raw
cotton.
10 Write the
Biological source of Absorbent cotton.
11. What is the difference between Absorbent and
Non-absorbant coton?
(Answers)
Q.1 Ans⇒ The chemical nature of absorbent
Cotton wool- chemically absorbent cotton
wool contain cellulose react with 6.7%
moisture react with ionized zine chloride Solution
to give violet colour the Sample of absorbent
Cotton wool I .P is insoluble in zinc chronicle
Solution
Q 2. Ans Sinting time basket -
A day my windriche wire copper basket
8 mm high and 50 mm in diameter. Pabricated from wive of
diameter 0.4 mm and having a mest of 15 to 20 mm. The basket weight
2.4 to 3 .0 g .
Q.4 Ans - Shinning time-
shinking time is mean
capillary action or water as absorbtion per second or time of absorption cotton
is not more than 10 second.
Q.5. Ans - Water holding capacity -
water holding capacity meant abdorption of water by cotton.
It is not less than 2*gm of water per gram or absorption .
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