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Ask QuestionPosted by Ilu Devarshi ? 4 years ago
- 3 answers
Yogita Ingle 4 years ago
Ginning:
In the processing of cotton, the first step is ginning, in which all the cotton fibres are separated from the seeds. It is done by a machine called gin or by combing.
Posted by Prem Kumar Nayak 4 years ago
- 1 answers
Posted by Harshika Sambeta 4 years ago
- 2 answers
Yogita Ingle 4 years ago
| Evaporation | Condensation |
| By definition, evaporation is a process where water changes into vapour. | Condensation is the opposite process where water vapour is converted to tiny droplets of water. |
| Evaporation occurs before a liquid reaches its boiling point. | Condensation is a phase change regardless of the temperature. |
| In terms of molecular movement, when a liquid is heated or when pressure is decreased the forces of attraction between molecules is low. The liquid then evaporates to a gas. | When a gas is cooled or when the pressure is increased the forces of attraction between molecules become strong. The gas then condenses to either a liquid or even a solid. |
| Evaporation can occur in all surfaces, at all times and at all places. Evaporation is frequent when the air is dry, hot and windy. | Condensation takes place on salt, hygroscopic nuclei-pollen grains, carbon particles etc.when air temperature is decreased beyond the level of saturation. |
| Evaporation usually takes place in low altitudes. | Condensation happens mainly at higher altitudes. |
| When evaporation takes place energy is consumed. | In the process of condensation energy is released. |
Posted by Harshika Sambeta 4 years ago
- 1 answers
Yogita Ingle 4 years ago
Some of the common methods of separating substances or mixtures are:
- Handpicking
- Threshing
- Winnowing
- Sieving
- Evaporation
- Distillation
- Filtration or Sedimentation
- Separating Funnel
- Magnetic Separation
Posted by Harshika Sambeta 4 years ago
- 1 answers
Yogita Ingle 4 years ago
Among different components of mixture there are many substances which are harmful or not useful for us. To remove these harmful or unuseful components we need to separate them. For example:
(a) Tea leaves are separated from the liquid with a strainer while preparing tea.
(b) Stone pieces from wheat, rice or pulses are picked out by hand.
Posted by Harshika Sambeta 4 years ago
- 1 answers
Posted by Chiranth Gowda K.M Chiranth 4 years ago
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Posted by Munazah Nisar 4 years ago
- 2 answers
Yogita Ingle 4 years ago
Mountaineers carry an oxygen cylinder along with them. It is because when they climb mountains, as altitude increases, the amount of oxygen level in the atmospheric air decreases as trees are not found at higher altitudes. As a result, mountaineers suffer from dizziness. It can also lead to hypoxia. Hypoxia is a condition wherein a region of the body is deprived of sufficient supply of oxygen at the tissue level. Hence, to avoid such issues arising due to insufficient oxygen, mountaineers carry oxygen cylinders.
Posted by Parvathi S 4 years ago
- 5 answers
Yogita Ingle 4 years ago
Pistil: This is the innermost part and the female reproductive organ of a flower which comprises three parts -stigma, style and ovary. This is collectively known as the pistil.
Posted by Akshita Choudhary2 4 years ago
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Posted by Sushant Chandra 4 years ago
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Posted by Avani Kalpande 4 years ago
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Sneha ** 4 years ago
Posted by Harshika Sambeta 4 years ago
- 2 answers
Yogita Ingle 4 years ago
Jute fibre is obtained from the stem of the jute plant. Jute fibres are naturally glued together by a sticky or gummy substance. This sticky substance needs to be removed in order to obtain the fibres. The fibre is extracted from the stem of the jute plant by the process of retting. Thus, the jute plants are cut from the fields when they are in the flowering stage. The stems of the harvested jute plants are immersed in clean pond-water or slow-running streams for a few days to clean and soften the fibre and to facilitate its stripping from the stem. During this time, the stems rot and the fibres are left behind. After a while, the fibres are separated from water by hand. This process of rotting the stems of the plant in water to remove the sticky substance and separate the fibre is known as retting.
Jute is a rough fibre and is not used for making fabrics or cloth for dresses. But it is a strong plant fibre and is, therefore, used for making ropes and jute or gunny bags.
Sivananda Sudhi 4 years ago
Posted by Harshika Sambeta 4 years ago
- 4 answers
Adwitiya Abhishek Kumar 4 years ago
Arun Smitha 4 years ago
Sivananda Sudhi 4 years ago
Posted by Anuj Jatikart 4 years ago
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Posted by Kawaljot Kaur Bajwa 4 years ago
- 1 answers
Yogita Ingle 4 years ago
Bar magnets should be kept in pairs with their unlike poles on the same side. They must be separated by piece of wood. For horse shoe magnet one should keep a piece of iron across the poles.
Posted by Medhini Ch 4 years ago
- 3 answers
Yogita Ingle 4 years ago
Fermentation is the process in which a substance breaks down into a simpler substance. Microorganisms like yeast and bacteria usually play a role in the fermentation process, creating beer, wine, bread, kimchi, yogurt and other foods.
Posted by Aishwarya Singh 4 years ago
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Posted by Anson Jeffrey C 4 years ago
- 2 answers
Sneha ** 4 years ago
Posted by Shreya Gawas 4 years ago
- 5 answers
Anson Jeffrey C 4 years ago
Yogita Ingle 4 years ago
Natural fibres are a collection of tiny threads obtained from plants and animals. For Example : cotton, wool ,Silk ,flax, jute. Flax and jute are the natural fibres obtained from plants. Wool and silk are the natural fibres obtained from animals.
Kartik Gupta 4 years ago
Posted by Harshika Sambeta 4 years ago
- 3 answers
Devika S S 4 years ago
Posted by Harshika Sambeta 4 years ago
- 1 answers
Meghna Thapar 4 years ago
Fruits and vegetables are packed with essential vitamins, minerals, fiber, and disease-fighting phytochemicals. Because of this, eating plenty of fruits and vegetables everyday can help reduce your risk of: Heart disease. High blood pressure. Fruit and vegetables are a good source of vitamins and minerals, including folate, vitamin C and potassium. They're an excellent source of dietary fibre, which can help to maintain a healthy gut and prevent constipation and other digestion problems. A diet high in fibre can also reduce your risk of bowel cancer.
Posted by Harshika Sambeta 4 years ago
- 1 answers
Posted by Harshika Sambeta 4 years ago
- 2 answers
Yogita Ingle 4 years ago
Honey is made by Honey bees. It contains natural sugar proteins, iron, and calcium and can be easily digested. ... The nectar mixes with proteins and enzymes in the honey bees stomach and is converted into honey. Later the bees store the honey in the beehive in hexagonal cells made of bee – wax called honeycombs
Devika S S 4 years ago
Posted by Harshika Sambeta 4 years ago
- 1 answers
Yogita Ingle 4 years ago
When the seeds begin to grow (or germinate) by developing roots they are called sprouts. Sprouting means the process by which seed germinate into sprouts. Some seeds that sprout is Moong, Black Gram (chana), green Gram, etc.
Posted by Harshika Sambeta 4 years ago
- 1 answers
Yogita Ingle 4 years ago
a tomato plant : fruits
B moringa plants
coriander : leaf
carrot : root
radish: root
Posted by Harshika Sambeta 4 years ago
- 3 answers
Anson Jeffrey C 4 years ago
Yogita Ingle 4 years ago
Food materials and sources
- The food that we consume is obtained from mainly two sources: plants and animals.
- Food obtained from plants: Fruits, vegetables, grains, pulses, cereals.
- Food obtained from animals: Egg, meat, milk, beef, fish, chicken, pork, prawns.
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Shivam Singh 4 years ago
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