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Q.

W=H2O,X=NaCl,Y=H2SO4,Z=NaOH
Colour of phenolphthalein indicator with Y is

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a

Yellow

b

Colourless 

c

Red

d

Pink

answer is D.

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Detailed Solution

Colour of phenlpthalein indicator with Y is colourless because Y is an acid. 
 

IndicatorAcidic mediumBasic medium 
PhenolphthaleinColourlessPink colur
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