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Ask QuestionPosted by Shubhamay Sarkar 5 years, 4 months ago
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Posted by Nibir Mahanta 5 years, 4 months ago
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Yogesh Beniwal 5 years, 4 months ago
Posted by Tejaswini Vashishtha 5 years, 4 months ago
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Sonu Kharate 5 years, 4 months ago
Priyal Raj 5 years, 4 months ago
Tina Moni Deka 5 years, 4 months ago
Posted by Aatman Gor 5 years, 4 months ago
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Anuja Lanjewar 5 years, 4 months ago
Priyal Raj 5 years, 4 months ago
Nivedita Singh 5 years, 4 months ago
Yogita Ingle 5 years, 4 months ago
When we cultivate same kind of plants on a large scale at one place, it called ‘Crop’.
We need food because it gives us energy, keeps us healthy, and helps us to grow as well as repair and replace damaged and worn-out tissues.
Posted by Bharat Jani 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
| S.No | Property | Solid | Liquid | Gases |
| 1. | Shape | They have a definite shape | They do not have a definite shape | They do not have a definite shape |
| 2. | Volume | They have a definite volume | They do not have a definite volume | They do not have a definite volume |
| 3. | Density | They have high-density | Liquids have less density than solids | Gases have the least density |
| 4. | The kinetic energy of particles | Least | More than solids | Maximum |
| 5. | Compressibility | Negligible | Low | High |
Posted by Akash Svm 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
Spacesuits are specially designed to protect astronauts from the low temperature and low pressure in space and to provide oxygen to breathe.
It provides an atmosphere similar to Earth's including oxygen and nitrogen.In space as there is no air, the air pressure is so low that it does not balance the pressure inside human body. Thus, wearing a spacesuit allows an astronaut to survive and work in space.
Yogita Ingle 5 years, 4 months ago
Spacesuits are specially designed to protect astronauts from the low temperature and low pressure in space and to provide oxygen to breathe.
It provides an atmosphere similar to Earth's including oxygen and nitrogen.In space as there is no air, the air pressure is so low that it does not balance the pressure inside human body. Thus, wearing a spacesuit allows an astronaut to survive and work in space.
Posted by ?????? ?????? ??? 5 years, 4 months ago
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Posted by Nibir Mahanta 5 years, 4 months ago
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Posted by Nibir Mahanta 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Cassiopeia is another prominent constellation in the northern sky. It is visible during winter in the early part of the night. It looks like a distorted letter W or M. A constellation does not have only 5-10 stars. It has a large number of stars .
Posted by Nibir Mahanta 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Ursa Major: - There are seven prominent stars in this constellation. It appears like a big ladle or a question mark.
There are three stars in the handle of the ladle and four in its bowl as shown in the figure.
Posted by Nibir Mahanta 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
- Orion: - It is one of the most magnificent constellations in the sky. It also has seven or eight bright stars [Fig] Orion is also called the Hunter.
- The three middle stars represent the belt of the hunter.
The four bright stars appear to be arranged in the form of a quadrilateral.
Posted by Yachika Sharma 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
M e a n i n g of Food Crops
The crops that are grown to feed the human population are known as food crops. There are a number of food crops grown in the country. example: rice, wheat, millets, maize
Posted by Priyesh Saxena 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
The elements that can easily lose electrons to form positive ions are called electropositive elements, for example: metals. Electropositivity is the measure of the ability of elements (mainly metals) to donate electrons to form positive ions.
The elements that can easily accept electrons to form negative ions are called electronegative elements, for example: non-metals. Electronegativity is the measure of the ability of elements (mainly non-metals) to attract electrons towards itself.
The opposite of electronegativity is electropositivity.
Down a group, the atomic size and nuclear charge increases but effect of increased atomic size outweighs the increased nuclear charge and hence electrons are less tightly held to the nucleus and can be easily removed so metallic or electropositive character increases.
Posted by Vivek Thakur 5 years, 4 months ago
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Muthirevula Jyothi 5 years, 4 months ago
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Posted by Nibir Mahanta 5 years, 4 months ago
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Posted by Priyanshi Aggarwal 5 years, 4 months ago
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Sonu Kharate 5 years, 4 months ago
Tanmai Jadhav 5 years, 4 months ago
Yogita Ingle 5 years, 4 months ago
*Crop rotation* is the Practice of growing a series of dissimilar or different types of crops in the same area in sequenced season.It is done so that the soil of farms is not used for only one set of nutrients. It helps in reducing soil erosion and increases soil fertility and crop yield.
Posted by Sniawmi Shadap 5 years, 4 months ago
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Posted by Nibir Mahanta 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
The moon's surface is dusty and barren. It has craters of different sizes and has large number of steep and high mountains. The moon's surface is covered with dead volcanoes, impact craters, and lava flows.
Posted by Nibir Mahanta 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km. More precisely, one light-year is equal to 9,500,000,000,000 kilometers.
Posted by Krushnal Harde 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
The Kharif cropping season starts with the onset of the Indian subcontinent’s monsoon. Kharif crops are typically sown at the beginning of the first monsoon rains (depends on region to region). Harvesting season begins from the 3rd week of September to October (the exact harvesting dates differ from region to region).
Following are some of the examples of Kharif crops:
- Rice
- Maize
- Sorghum
- Bajra
- Soybean
- Cotton
Posted by Jashandeep Singh 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Nitrogen cycle is all about the movement of nitrogen between various elements on Earth (like air, soil, living organisms etc.) The amount of nitrogen in the atmosphere remains constant.
- Atmosphere has approx. 78% nitrogen.
- Atmospheric Nitrogen is fixed into the soil
- N2 fixing microbes convert atm. N2 into nitrogen compounds like NH3
- Plants utilize nitrogen from soil through their roots
- Animals utilize nitrogen, feeding on plants
- When Plants & animals die, Nitrogenous wastes are returned to soil
- Decomposers convert some part to nitrogen compounds to be used by plants
- Denitrifying bacteria convert into atm. N2
Posted by Pronob Mardi 5 years, 4 months ago
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Posted by Sniawmi Shadap 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Gases like sulphur dioxide and nitrogen dioxide when react with rainwater forms sulphuric acid and nitric acid respectively. These acids come down along with the rain. This is called acid rain. Acid rain has several harmful effects.
Posted by Pronob Mardi 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Cytoplasm is the part of the cell that contains various organelles such as mitochondria, ribosomes, Golgi bodies, etc. Cytoplasm is a fluid that fills the cell and occurs between the plasma membrane and the nucleus.
Posted by Avinash Engoli 5 years, 4 months ago
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Devang Jain 5 years, 4 months ago
Gaurav Seth 5 years, 4 months ago
Preparation of Soil: Before sowing the crop seeds, the soil of fields is loosened and overturned. This process is called ploughing or tilling. Ploughing causes ventilation of soil and makes it suitable for the growth of small organisms living in it.
Posted by Ritika Talwar 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Synthetic fibre are man made fibres. so mention difference between synthetic fibre and natural fibres
|
NATURAL FIBRES |
SYNTHETIC FIBRES |
|
Comes from nature |
Man made fibres |
|
Natural color |
Color as per requirement is added in color bath |
|
During spinning process spinneret is not necessary |
During spinning process spinneret is necessary for the production of filament |
|
Chances of containing dust or impurities |
No chance of any dust or impurities |
|
Less durable than synthetic |
More durable than natural |
Posted by Jit Barman 5 years, 4 months ago
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Rani Swain 5 years, 4 months ago
Yogita Ingle 5 years, 4 months ago
Some fibres are called as synthetic fibers because these are manmade fibers prepared by using chemicals. These are made of small units that join together to form long chains. Some of the examples of synthetic fibres are nylon, rayon, acrylic, polyester etc.
Posted by Shah Vikas 5 years, 4 months ago
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Posted by Samyak Kamble 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
Techniques to prolong the shelf life of a food are called food preservation. We know that microbes proliferate very fast in presence of food, moisture, oxygen and ambient temperature. All the methods of food preservation are aimed at ruling out the food, moisture, oxygen and ambient temperature for microbes so that they won’t proliferate. Some common methods of food preservation are as follows:
Sun Drying: This is a traditional method of food preservation. Sun-drying helps in removing moisture from food. Grains are dried in sun before being stored. Many vegetables are also sun-dried so that they can be used in off season.
<hr />Chemical Method: Some chemicals prevent the growth of microorganisms in food. These chemicals are used in pickles and jams to preserve them. Salt, acids and oil are also used as food preservatives. Examples: sodium benzoate and sodium metabisulphate.
Preservation by common salt: When a food item is kept in plenty of salt, water from food comes out because of osmosis. It results in dehydration of the food item. Absence of moisture helps to prevent the growth of microbes. Fish, meat and pickles are preserved by adding salt.
Preservation by Sugar: Sugar preserves food by reducing moisture in food. Jam, jelly and squash are preserved by adding sugar.
Preservation by Oil and Vinegar: The layer of oil on top of food prevents oxygen from entering the food. Some microbes do not survive in absence of oxygen. Some microbes cannot survive in acidic environment and thus vinegar is an effective food preservative.
Posted by Pronob Mardi 5 years, 4 months ago
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