Which of the following cotton fibre property is determined by using gravimetric method ?

In the case of fully matured cotton crops, the difference between rod like fibres and dead fibres in a group of 100 fibres is

The second scale in the quadrant balance is used to read the count of

The unit of shear rigidity expressed in KES-F system is

Following technique is used for sample collection from raw cotton for testing

The property of fibres that  HVI does not mean is