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

The correct option is C Blue to red Curd contains lactic acid. nbsp;[ Litmus paper amp;Colour in acidic solution amp;Colour in basic soluti ...

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Standard VIII

Chemistry

Synthetic Indicators

Identify the ...

Question

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

Red to green

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Blue to red

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Red to blue

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Blue to green

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Solution

The correct option is B
Blue 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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Similar questions

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

A blue litmus paper was first dipped in dil. HCI and then in dil. NaOH solution. It was observed

that the colour of the litmus paper :(a) Changed to red(b) Changed first to red and then to blue(c) Changed blue to colourless(d) Remained blue in both the solutions

Q. Why do acids change litmus paper colour from blue to red while bases don't?

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

The correct option is B Blue 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.

The correct option is B
Blue 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.