Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Shivanand Wali 5 years ago
- 1 answers
Posted by Konkana Bharti 5 years ago
- 1 answers
Meghna Thapar 5 years ago
the hard substance, formed of mineral matter, of which rocks consist. a rock or particular piece or kind of rock, as a boulder or piece of agate. a piece of rock quarried and worked into a specific size and shape for a particular purpose: paving stone;building stone. a small piece of rock, as a pebble. precious stone.
Posted by Saransh Goplani 5 years ago
- 2 answers
Yogita Ingle 5 years ago
It is defined as the separation process in which solids are separated from the liquid. All the solids settle down at the bottom of a beaker and on top, a clear layer of liquid is obtained. Sedimentation is a process by which heavier impurities present in liquid normally water settle down at the bottom of the container containing the mixture. The process takes some amount of time.
Parvathy Pradeep Pallath 5 years ago
Posted by Jesh . 5 years ago
- 2 answers
Parvathy Pradeep Pallath 5 years ago
Yogita Ingle 5 years ago
Winnowing is used to separate heavier and lighter components of a mixture by wind or by blowing air. This process is used by farmers to separate lighter husk particles from heavier seeds of grain.
Posted by Jesh . 5 years ago
- 1 answers
Parvathy Pradeep Pallath 5 years ago
Posted by Liya Fathima 5 years ago
- 4 answers
Yogita Ingle 5 years ago
The major component of air is nitrogen.
Air is a combination of different gases. The major components of air are as follows:
(a) Nitrogen - 78%
(b) Oxygen - 21%
(c) The remaining 1% consists of argon (about 0.9%), carbon dioxide (about 0.03%) and traces of other gases.
(d) It also consists of water vapour, dust and smoke which varies timely from place to place.
Posted by Ilu Devarshi ? 5 years ago
- 3 answers
Shivam Singh 4 years, 11 months ago
Yogita Ingle 5 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 5 years ago
- 1 answers
Posted by Harshika Sambeta 5 years ago
- 2 answers
Yogita Ingle 5 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 5 years ago
- 1 answers
Yogita Ingle 5 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 5 years ago
- 1 answers
Yogita Ingle 5 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 5 years ago
- 1 answers
Posted by Chiranth Gowda K.M Chiranth 5 years ago
- 0 answers
Posted by Munazah Nisar 5 years ago
- 2 answers
Yogita Ingle 5 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 5 years ago
- 5 answers
Yogita Ingle 5 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 5 years ago
- 1 answers
Posted by Sushant Chandra 5 years ago
- 4 answers
Posted by Avani Kalpande 5 years ago
- 1 answers
Sneha ** 5 years ago
Posted by Harshika Sambeta 5 years ago
- 2 answers
Yogita Ingle 5 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 5 years ago
Posted by Harshika Sambeta 5 years ago
- 4 answers
Adwitiya Abhishek Kumar 5 years ago
Arun Smitha 5 years ago
Sivananda Sudhi 5 years ago
Posted by Anuj Jatikart 5 years ago
- 1 answers
Posted by Kawaljot Kaur Bajwa 5 years ago
- 1 answers
Yogita Ingle 5 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 5 years ago
- 3 answers
Yogita Ingle 5 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 5 years ago
- 1 answers
Posted by Anson Jeffrey C 5 years ago
- 2 answers
Sneha ** 5 years ago
Posted by Shreya Gawas 5 years ago
- 5 answers
Anson Jeffrey C 5 years ago
Yogita Ingle 5 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 5 years ago
Posted by Harshika Sambeta 5 years ago
- 3 answers
Devika S S 5 years ago
Posted by Harshika Sambeta 5 years ago
- 1 answers
Meghna Thapar 5 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.
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Rohitha S 5 years ago
1Thank You