Set 4 Practice Mode

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Q10638
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What is the function of flux on soldering surface?
Q10639
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Which type of soldering is invisible after joining two or more object?
Q10640
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What is the purpose of filler metal in soldering process?
Q10641
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What is the purpose of soldering on sheet metal joints?
Q10642
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How much gap maintained on joints/ laps for capillary flow of solder?