For nano metres whose diameters less than ________ are used as welding purposes.(a) 10nm(b) 20nm(c) 30nm(d) 40nmI got this question during an interview.This question is from Nano Wires and Nano Cones topic in section Nano Materials of Applied Chemistry

For nano metres whose diameters less than ________ are used as welding

1.	For nano metres whose diameters less than ________ are used as welding purposes.(a) 10nm(b) 20nm(c) 30nm(d) 40nmI got this question during an interview.This question is from Nano Wires and Nano Cones topic in section Nano Materials of Applied Chemistry
Answer» Right ANSWER is (a) 10nm For explanation I would SAY: For NANO metres whose diameter is LESS than that of 10nm is mostly used for welding purposes. This REQUIRES precise control of heating mechanism.

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