Dr. Alka Agarwal, Urvi Raval solutions for होम सायन्स [इंग्रजी] इयत्ता १० आईसीएसई chapter 13 - Laundry Material [Latest edition]

Only ______ soaps are used to wash silk garments.

Hardness of water is of two types ______.

The ingredients needed in making soap ______.

Optical brighteners make garments appear ______.

Neutral soaps are applied on ______.

State True or False:

Starch is manufactured in plants by the process of photosynthesis.

State True or False:

Detergent does not form scum in hard water so its effectiveness reduces in hard water.

State True or False:

One advantage of applying a stiffening agent is that it makes the fabric easier to iron.

______ soap contains alkali and fat in equal amounts.

The Soapnut is also known as ______.

______ are cleaning agents made from chemicals.

Select the odd one:

A soap is:

Select the odd one:

The different kinds of detergents are:

Select the odd one:

A good quality laundry soap will have:

Select the odd pair:

Select the odd pair:

Select the odd pair:

Assertion (A): Detergents are more effective in hard water than soap.

Reason (R): Detergents form soluble complexes with calcium and magnesium ions in hard water, preventing the formation of soap scum.

Assertion (A): Fabric softeners work by coating the fabric fibres with a thin layer of chemicals that makes them feel smoother and reduces static electricity.

Reason (R): Fabric softeners enhance the absorbency of fabrics, allowing them to retain more water during the rinse cycle, which contributes to their softness.

Assertion (A): Oxidising bleaches, like hydrogen peroxide, work by releasing oxygen, which breaks down colour molecules in stains.

Reason (R): The oxygen released by oxidising bleaches oxidises the colour molecules, making them colourless and soluble, thus aiding in stain removal.

Choose the correct pair:

Choose the correct pair:

Select the incorrect pair:

Select the incorrect pair:

This product is used for:

The following image is an example of:

Choose the correct statement:

Statement I: Hard water is ideal for laundering clothes as it enhances the effectiveness of detergents, resulting in better cleaning.

Statement II: Soft water is more efficient for laundering because it allows detergents to lather easily and effectively removes dirt from fabrics.

Choose the correct statement:

Statement I: A good laundry soap should produce a rich lather in both hard and soft water, ensuring effective cleaning.

Statement II: A good laundry soap should be harsh on fabrics to ensure that all stains are removed, regardless of the fabric’s delicacy.

Choose the correct pair:

Choose the correct pair:

Suggest any two precautions to be taken care of during the blueing process.

What are detergents?

How do detergent help in the laundry?

Give one use of optical brighteners in the laundry.

What is soft water?

Why is soft water appropriate for the laundry process?

Give two advantages of starching.

Why are white clothes bleached? Give two reasons.

Name two types of blues.

Enlist the differentiate between oxidising and reducing bleaches.

Give two advantages of using borax.

Name the stiffening agents used for cotton.

Name the stiffening agents used for silk.

What are the advantages of using detergents over soaps?

List any five benefits of using starch in laundering of clothes.

Mention any two characteristics of a good soap that is used for washing clothes.

What are additional laundry reagents?

Classify additional laundry reagents and give two examples of each.

State any five precautionary measures to be followed during the bluing process in laundry.

Soaps and detergents are both cleaning agents, but they work in different ways. Soaps are made from fats and oils, while detergents are synthetic chemicals. Soaps are effective in soft water, but they can form scum in hard water.

In this context, answer the following questions:

1. What is the main difference between soap and detergent?
2. What is a notable environmental characteristic of soaps?
3. What is a key advantage of detergents in hard water?

Stiffening agents are substances added to fabrics to make them more rigid or firm. They are commonly used in the textile industry to create a variety of effects, such as shaping collars and cuffs, adding support to garments, and creating a wrinkle-resistant finish.

In this context, answer the following questions:

1. What role do stiffening agents play in garment care?
2. Name a common stiffening agent used in laundry.
3. Mention four benefits of using stiffening agents.