In the given figure, it is given that XY = XZ, X is the mid-point of QR and exterior angle of angleQXY is equal to exterior angle of angleRXZ. Then, prove that PY = PZ.
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Neutral substances are neither acidic nor basic. An acid has the hydrogen ions and the base has the hydroxyl ions so on this basis neutral substances have equal no. of these ions. The most common example of neutral substance is water.
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