MCQOPTIONS
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				This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Mechanic knowledge and support exam preparation. Choose a topic below to get started.
| 1. | 
                                    Among the following, which metal is NOT usually preferred as flux for soldering applications? | 
                            
| A. | Borax | 
| B. | Zinc chloride | 
| C. | Ammonium chloride | 
| D. | Lead | 
| Answer» E. | |
| 2. | 
                                    A spelter used in brazing is commonly made of | 
                            
| A. | Rosin Iron base and lead alloy | 
| B. | Copper base and silver alloy | 
| C. | Lead sulphide | 
| D. | Zinc chloride | 
| Answer» C. Lead sulphide | |
| 3. | 
                                    A typical Solder composition used in component assembly to PCB is | 
                            
| A. | Lead and silver | 
| B. | Lead and copper | 
| C. | Lead and zinc | 
| D. | Lead and tin | 
| Answer» E. | |