 
			 
			MCQOPTIONS
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				| 1. | Which of the following phenomena is responsible for the formation of sessile dislocation? | 
| A. | Lomer-Cottrell barriers | 
| B. | Frank read source | 
| C. | Age hardening | 
| D. | Dislocation jog and kink | 
| Answer» B. Frank read source | |