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Ask QuestionPosted by Faiza Iqbal Khan 7 years, 6 months ago
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Posted by Inder Pal 7 years, 6 months ago
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Meghna Thapar 6 years ago
Fabrics are made from yarn by weaving and knitting.
Weaving is a process of making a fabric by arranging yarns passing in one direction with other yarns at right angles to them. Two sets of yarn are woven to make a fabric. The weaving of yarn to make fabrics is done by using ‘looms'.Knitting is the process of making a fabric by interlocking loops of single yarn with knitting needles or machines. It can be done by hand or on machines. A sweater is made by the process of knitting by using a single ‘woollen yarn’ with the help of knitting needles.
Posted by Kartik Parihar 7 years, 6 months ago
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Jun Tamuli 7 years, 6 months ago
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Soujanyaa Sinha 7 years, 6 months ago
Posted by Abhishek Rawat 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
Flowers with joined sepals — Hibiscus, datura, cotton, tomato (any two).
Flowers with separate sepals — mustard, lotus, lily, jasmine, rose (any two).
Posted by Tejasvi Tanwar 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
A streamlined body is a shape of body that reduces resistance when moving. A streamlined body is the one which is pointed at the ends and broad at the middle. Such body when travel through a fluid or gaseous medium, exhibit minimum friction or resistance. Eg. Body of fish is streamlined to move easily through water. Some animals, such as sharks and dolphins, are streamlined so that they have less resistance when swimming in water. This same idea works with airplanes.
Posted by Nisha Sharma 7 years, 6 months ago
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Aditya Kumar Nayak 7 years, 6 months ago
Posted by Hari Kishore 7 years, 6 months ago
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Posted by Harmeet Singh 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
Properties of materials:
- A material is any substance or mixture of substances that occupy a volume, and has a mass.
- A substance usually refers to pure compound.
- Appearance, behavior, name, structure, color, order, composition and any information about a substance are properties of a material.
Posted by Harmeet Singh 7 years, 6 months ago
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Meghna Thapar 6 years ago
Properties of Materials
- Appearance:
On the basis of appearance, materials are classified into two groups - lustrous and non-lustrous. The materials which have a shiny appearance are called lustrous. Examples – metals (gold, silver, copper, aluminium and iron) and metal alloys (steel, stainless steel, brass, etc). Those materials which have dull appearance are said to be non-lustrous. Examples – paper, wood, chalk, cotton, plastic, rubber, etc.
- Hardness and softness:
On the basis of hardness or softness, materials are of two types – hard and soft.
Hard materials cannot be easily compressed, cut, bent or scratched. Examples – diamond, teeth, bones, steel, wood, etc. Soft materials can be easily compressed, cut, bent or scratched. Examples – sponge, cotton, wool, foam, rubber, etc.
- Soluble or Insoluble:
Materials can either be soluble or insoluble in water. Common salts, milk, juice, alcohol, washing soda are some materials which are soluble in water. Sand, chalk powder, saw-dust, sulphur, glass, plastic, etc. are insoluble in water.
Posted by Avishai Singh 7 years, 6 months ago
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Posted by Rony Anshu 7 years, 6 months ago
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Hari Kishore 7 years, 6 months ago
Posted by Hari Kishore 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
Different components of a mixture are separated in order to either separate the un-required components from a mixture or sometimes, to separate more than one useful components from a mixture.
For example, grain purchased from shops can contain several impurities such as pieces of stone, husk, broken grains, etc. Thus, grain is separated from these impurities to make it edible.
Similarly, after preparing tea, we strain it to remove the used tea leaves from tea.
Posted by Hari Kishore 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
Deficiency diseases are diseases that are caused by the lack of certain essential nutrients, especially vitamins and minerals, in one’s diet over a prolonged period of time.
- Night blindness is the most common effect of the deficiency of Vitamin A. It also affects the immune system and leaves the person prone to other diseases and infections. Vitamin A deficiency in a pregnant woman can lead to complications during pregnancy and childbirth.
- Vitamin B1 deficiency can cause a disease called Beriberi, which results in weak muscles and severe loss of weight. Severe deficiency can cause paralysis and cardiac failure.
- Deficiency of Vitamin C can cause Scurvy, a disease that leads to the bleeding of gums, skin spots and swelling of joints. It also affects the immune system and can also cause death in extreme situations.
- Vitamin D deficiency can lead to a disease called Rickets, which leads to weakening of bones, especially near the joints. It can also lead to the decaying of teeth.
Posted by Stuti Singh 7 years, 6 months ago
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Sonali Aggarwal 7 years, 6 months ago
A saturated solution is the mixture of solvent and the solute to which no more solute can be dissolved in the solvent.
Posted by Aahan Srivastava 7 years, 6 months ago
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Aahan Srivastava 7 years, 6 months ago
Posted by Sai Prakash 7 years, 6 months ago
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Anshika Simon 7 years, 6 months ago
Kinjal Shah 7 years, 6 months ago
Yogita Ingle 7 years, 6 months ago
Ingredients of Food: Materials needed to prepare any food item are called ingredients. Two or more than two ingredients are needed to prepare a dish.
Example: To prepare boiled rice, rice and water are used, so rice and water are the ingredients for boiled rice.
Vegetables, salt, water and spices are used in cooking vegetable curry, so vegetables, salt, water and spices are ingredients of vegetable curry.
Posted by Abhishek Banjare 7 years, 6 months ago
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Prashant Snehil 7 years, 6 months ago
Stuti Singh 7 years, 6 months ago
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Kinjal Shah 7 years, 6 months ago
Stuti Singh 7 years, 6 months ago
Posted by Nethan Salve 7 years, 6 months ago
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Tamanna Bansal 7 years, 6 months ago
There are two types of fibre
1) natural fibre - natural fibre are those fibres which we get from plants and animals. Like cotton , jute ,wool etc
2) synthetic fibre - they are also called man made fibres. Like nylon, polyster etc
Posted by Amrit Tiwari 7 years, 6 months ago
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Stuti Singh 7 years, 6 months ago
Posted by Janvi Jha 5 years, 10 months ago
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Meghna Thapar 6 years ago
The pelvic girdle is a ring-like structure, located in the lower part of the trunk. It connects the axial skeleton to the lower limbs.
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Ravi Kumar 7 years, 6 months ago
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