You are provided with aqueous solutions of three salts A , B and C . 2 ‐ 3 drops of blue litmus solution, red litmus solution and phenolphthalein were added to each of these solutions in separate experiments. The change in colour of different indicators were recorded in the following table: Sample With blue litmus solution With red litmus solution With phenolphthelein A No change Turns blue Turns pink B No change No change No change C Turns red No change No change On the basis of above observations, identify A , B and C from the following options:

A = CH 3 COONa , B = NaCl , C = FeCl 3

A = NaCl , B = CH 3 COONa , C = FeCl 3

A = FeCl 3 , B = NaCl , C = CH 3 COONa

A = FeCl 3 , B = CH 3 COONa , C = NaCl

EASY

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The litmus paper or the litmus solution is obtained from _____ plant.

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Important Questions on Nature and Behaviour of Matter

EASY

Chemistry>Inorganic Chemistry>Nature and Behaviour of Matter>Natural Indicators

What happens, when methyl orange solution mixed with

HCl

MEDIUM

Chemistry>Inorganic Chemistry>Nature and Behaviour of Matter>Natural Indicators

You are provided with aqueous solutions of three salts $A, B$ and $C$ . $2 ‐ 3$ drops of blue litmus solution, red litmus solution and phenolphthalein were added to each of these solutions in separate experiments. The change in colour of different indicators were recorded in the following table:

Sample	With blue litmus solution	With red litmus solution	With phenolphthelein
A	No change	Turns blue	Turns pink
B	No change	No change	No change
C	Turns red	No change	No change

On the basis of above observations, identify $A, B$ and $C$ from the following options:

MEDIUM

Chemistry>Inorganic Chemistry>Nature and Behaviour of Matter>Natural Indicators

A solution turns methyl orange into yellow the approximate

pH

of solution is

EASY

Chemistry>Inorganic Chemistry>Nature and Behaviour of Matter>Natural Indicators

The indicators which turn red in acid solution are:

MEDIUM

Chemistry>Inorganic Chemistry>Nature and Behaviour of Matter>Natural Indicators

Which of the following is not an olfactory indicator?

MEDIUM

Chemistry>Inorganic Chemistry>Nature and Behaviour of Matter>Natural Indicators

Acid turn methyl orange:

MEDIUM

Chemistry>Inorganic Chemistry>Nature and Behaviour of Matter>Natural Indicators

The colour of Methyl orange in alkali solutions is _____ .

EASY

Chemistry>Inorganic Chemistry>Nature and Behaviour of Matter>Natural Indicators

An indicator is added to Potassium Hydroxide and the solution turns pink:

Name the indicator that is added.

MEDIUM

Chemistry>Inorganic Chemistry>Nature and Behaviour of Matter>Natural Indicators

Consider the following statements:
(A) Both acids and bases change colour of all indicators.
(B) If an indicator gives a colour change with an acid, it does not give a change with a base.
(C) If an indicator changes colour with a base, it does not change colour with an acid.
(D) Change of colour in an acid and a base depends on the type of the indicator.
Which of these statements are correct?

MEDIUM

Chemistry>Inorganic Chemistry>Nature and Behaviour of Matter>Natural Indicators

China rose indicator turns green with the addition of a solution. The solution is

EASY

Chemistry>Inorganic Chemistry>Nature and Behaviour of Matter>Natural Indicators

Blue litmus will turn red in

EASY

Chemistry>Inorganic Chemistry>Nature and Behaviour of Matter>Natural Indicators

The methyl orange solution turns red in

EASY

Chemistry>Inorganic Chemistry>Nature and Behaviour of Matter>Natural Indicators

The substance which turns blue litmus red is