Identify the change in colour- when curd is tested with litmus paper- Red litmus to blue-Blue litmus to green-Red litmus to green-Blue litmus to red-

The correct option is D Blue litmus to red. Curd contains lactic acid. nbsp;[ Litmus paper amp;Colour in acidic solution amp;Colour in basi ...

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Standard VII

Chemistry

Properties of Acids

Identify the ...

Question

Identify the change in colour, when curd is tested with litmus paper.

Red litmus to green.

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Blue litmus to red.

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Red litmus to blue.

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Blue litmus to green.

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Solution

The correct option is B
Blue litmus to red.

Curd contains lactic acid. $\begin{matrix} Litmus paper & Colour in acidic solution & Colour in basic solution Red & Red (no change) & Red to blue Blue & Blue to red & Blue (no change) \end{matrix}$ Therefore, blue litmus paper turns red when dipped in curd.

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what is red and blue litmus paper ? what makes red litmus to turn blue and blue litmus turn red? what is the reddish substance on the red litmus and blue colour substance on blue litmus paper?

Iers there any trick to remember acids changes blue litmus paper to red and red litmus paper to blue??

Q. Question 28.
Which of the following statement is true for acids?
(a) Bitter and change red litmus to blue
(b) Sour and change red litmus to blue
(c) Sour and change blue litmus to red
(d) Bitter and change blue litmus to red

Q. Identify us.
"I convert blue litmus into red."
"I convert red litmus into blue."
"I do not change colour of any litmus."

Q. _______ salts turns blue litmus to red while ______ salts turns red litmus to blue.

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Identify the change in colour, when curd is tested with litmus paper.

The correct option is B Blue litmus to red. Curd contains lactic acid. Litmus paperColour in acidic solutionColour in basic solutionRedRed (no change)Red to blueBlueBlue to redBlue (no change)Therefore, blue litmus paper turns red when dipped in curd.