name three liquids, which when tested in the manner shown in fig given alongside, May cause deflection in the magnetic needle.
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The three liquids that may cause a magnetic needle to direct when tested in the manner shown in the diagram are vinegar, lime water and tap water. This phenomenon is attributed to the fact that the presence of positive and negative particles called ions in these three liquids help them to conduct current
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Tap water, lime water, vinegar are the three liquids which cause the needle to deflect.
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