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Effect on Indicators by Acids and Bases

Which of the ...

Question

Which of the following are used as an indicator for identifying acids and bases:

A

Litmus paper

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B

Tumeric

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C

Methyl orange

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D

All are examples of indicators.

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Solution

The correct option is D
All are examples of indicators.

Litmus is a natural indicator, turmeric is anaother such indicator.

And methyl orange is a synthetic indicator.

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Similar questions

Q. Which of the following is not an acid-base indicator?

(a) blue litmus
(b) methyl orange
(c) phenolphthalein
(d) Digene

Q. Identify the incorrect statements from the following.
a) Acids are bitter whereas bases are sour in taste.
b) Baking soda, tomatoes and grapes contain organic acids.
c) Acids and bases can be identified using turmeric, methyl orange and litmus solution.
d) Olfactory indicators change colours in acidic or basic solutions.

The indicators which turn red in acid solution are :

(a) turmeric and litmus

(b) phenolphthalein and methyl orange

(c) litmus and methyl orange

(d) phenolphthalein and litmus

Q. Which one of the following is not used as a indicator?

(a) Vinegar
(b) Litmus
(c) Phenolphthalein
(d) Methyl orange

Q. Mention the colour changes observed when the following indicators are added to acids:
(a) Alkaline phenolphthalein solution.
(b) Methyl orange solution.
(c) Neutral litmus solution.

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