The medicine used for treating indigestion is:

Sodium hydroxide is

Raw mango is sour in taste due to presence of

Stomach secretes:

Sting of an ant contains

Neutralisation reaction is a

When the soil is too basic, plants do not grow well in it. To improve its quality, what must be added to the soil?

Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions respectively are

Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed?

Consider the following statements:
(i) Both acids and bases change colour of all indicators.
(ii) If an indicator gives a colour change with an acid, it does not give a change with a base.
(iii) If an indicator changes colour with a base, it does not change colour with an acid.
(iv) Change of colour with an acid and a base depends on the type of the indicator.
Which of the above statements is/are correct?

Ammonium chloride is an example of _____________salt

_____________is used to remove acidity of solids

Acetic acid is present in __________ while __________ is present in lemon.

When an acid mixed with a base, a __________ reaction takes place.

Acid + Base \(\longrightarrow\) _____________ + Water

Lemon water is basic in nature.

Calamine can be used to treat ant's sting.

Phenolphthalein is a natural indicator.

Common salt dissolved in water turns blue litmus red.

Lime water turns red litmus blue.

Lime water

Soap

Turmeric

Milk of magnesia

Sodium chloride

Name two substances which changes red litmus blue.

Name two natural occurring indicators

What are indicators?

What are bases?

What are acids?