Question

On the experiment to compare tensile strength of cotton silk and nylon fibres 1

Answer 1

Answer:

(i) The tensile strength of cotton fibre decreases on soaking in acids but remains practically unaffected on soaking in alkalies. (ii) The tensile strength of nylon fibres remain practically unaffected on soaking either in acids or in alkalies. (iii) Always take the same length of the threads.

Answer 2

Cotton need 10 gram weight to break the thread

Silk need 20 gram to break the thread Wool need 35 gram to break the thread Nylon need 50 gram to break the thread