Question

Answer the following in short :-

1. What are neutral substances?

2. What is formed when an acid and a base react with each other?

3. What are anhydrous salt?

4. What type of reaction takes place when an acid reacts with a base?

5. Name the substance that gives yellow colour to turmeric.​

Answer 1

1) Substances which are neither acidic nor basic, are called neutral substances.

2) When an acid is mixed with a base in the right quantities, they neutralise each other. That means they lose their power. Some substances change colour when they react with an acid or a base.

3) Anhydrous salt is only the cation and anion making up the salt. They have the ability to combine and remove water from their surroundings.

4) The reaction of an acid with a base is called a neutralization reaction. The products of this reaction are a salt and water.

5) The golden yellow color of turmeric is due to curcumin.

Answer 2

$\sf \: Answer :$

(1) What are neutral substances?

Substances which are neither acidic nor basic is known as Neutral Substances.

(2) What is formed when an acid and a base react with each other?

When an acid and a base react with each other Salt and Water is formed as their result.

(3) What are anhydrous salt?

Salts which do not contain any water of crystallisation is known as Anhydrous Salt.

(4) What type of reaction takes place when an acid reacts with a base?

The reaction between an acid and a base is known as Neutralisation.

5. Name the substance that gives yellow colour to turmeric..

The yellow colour of turmeric is due to Curcumin.

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Know more :

• Neutral substance :

These substances do not change the color of Red or Blue litmus Paper.

• Example of a reaction where base and acid react with each other.

Hydrochloric acid (acid) + Sodium hydroxide (base) → Sodium chloride (salt) + Water

• Example of Anhydrous salts

Copper Sulphate = (CuSO4)

Curcumin :

• It is produced by Curcuma longa plants.
• It is yellow in colour
• Formula = C21H20O6