Set 5 Practice Mode

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Q14281
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Which metal is soldered by using zinc chloride flux as solder?
Q14282
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Which is to be added to recondition the solder?
Q14283
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Which colour band of resistor indicates the multiplier?
Q14284
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Which resistor is known as photo-Conductors?
Q14285
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Which material is used for making wire wound resistors?