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Visual Indicators

The solutions...

Question

The solutions which do not change the colour of either red or blue litmus are known as:

A

neutral solution

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B

alkaline solution

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C

brine solution

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D

acidic solution

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Solution

The correct option is A neutral solution
Litmus is an indicator which identifies the acidity or basicity of the solutions by changing its colour. But if the solution does not change its colour than it should be the neutral solution.

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Similar questions

Q. Which salt solution among the following will change the colour of blue litmus paper to red?

[1 mark]

Q. Consider the following statements.
a. Baking soda is an acidic salt whereas washing soda is a basic salt.
b. The aqueous solution of common salt does not change the colour of either red litmus solution or blue litmus solution.
c. Amla tastes sour whereas soap solution is bitter in taste.
d. The water extract of spinach does not change the colour of blue litmus solution.
Which of the statements are correct?

Neutral solution changes the color of blue litmus to red.

Q. When a student added red litmus to an aqueous solution, the red litmus turned blue. Which one of the following should be added in excess so that the change in colour is reversed?
(1) baking soda solution
(2) lime water
(3) vinegar solution
(4) ammonia solution

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

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