Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Biology Biology in Human Welfare Scientific Developments
Which of the following techniques is used in scanning electron microscopy (SEM) for examining surface morphology?
1
Sputter coating
2
Critical point drying
3
Cryo-fixation
4
More than one of the above
5
None of the above