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Q)

Write two important uses of formalin .

$\begin{array}{1 1} \text{(a) (i) It is widely used in household products (ii) involve in conversion for precursors for plastics.} \\ \text{(b)(i) It is widely used in household products (ii) involve in conversion for precursors for plastics.}\\ \text{(c) i) In preserving biological specimens (ii) It is also used as an antiseptic in sterilising surgical instruments.} \\ \text{(d) None of the above} \end{array} $

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A)
Solution :
A solution of 35 to 40 per cent of water in formaldehyde or methanal is called formalin.
As formalin is a strong disinfectant and tissue hardener,
It is used for preserving biological and anatomical specimens.
It is also used as an antiseptic in sterilising surgical instruments.
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