Study the following table carefully and identify X, Y, and Z.

Substance Turmeric solution Indicator (Y) Indicator (Z)

Curd Yellow Red Colourless

X Red Blue Pink

Toothpaste Red Blue Pink

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Question 3

Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed
(a) Yellow in both acid and base.
(b) Yellow in acid and red in base.
(c) Pink in acid and yellow in base.
(d) Red in acid and blue in base.

Q. Study the following table carefully and identify X, Y and Z.

Substance	TurmericSolution	Indicator (Y)	Indicator (Z)
Curd	Yellow	Red	Colourless
X	Red	Blue	Pink
Toothpaste	Red	Blue	Pink

Q. Study the following table carefully and identify X, and Y.

Substance	Tumeric Solution	Indicator (Y)
Curd	Yellow	Red
X	Red	Blue
Toothpaste	Red	Blue

Question 4

Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions, respectively are
(a) red and blue.
(b) blue and red.
(c) pink and colourless.
(d) colourless and pink

Q. Which of the following is incorrectly matched?

	Indicator	Colour change in basic medium
(1)	Litmus paper	Red to blue
(2)	Methyl orange	Orange to red
(3)	Phenolphthalein	Colourless to pink
(4)	Turmeric	Yellow to reddish brown

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Substance	Turmeric solution	Indicator (Y)	Indicator (Z)
Curd	Yellow	Red	Colourless
X	Red	Blue	Pink
Toothpaste	Red	Blue	Pink

Study the following table carefully and identify X, Y, and Z. Substance Turmeric solution Indicator (Y) Indicator (Z) Curd Yellow Red Colourless X Red Blue Pink Toothpaste Red Blue Pink

Study the following table carefully and identify X, Y, and Z.

Substance Turmeric solution Indicator (Y) Indicator (Z)

Curd Yellow Red Colourless

X Red Blue Pink

Toothpaste Red Blue Pink