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Ask QuestionPosted by Sagar Kumar 5 years, 5 months ago
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Posted by Arushi Santy 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Sowing is the process of planting seeds. In sowing, generally little soil is placed over the seeds.
Sowing can be Hand sowing or (planting) in which handfuls of seed are cast over prepared ground. However mostly seed are sown using seed drill. It offers greater precision; seed is sown evenly and at the desired rate. The drill also places the seed at a measured distance below the soil, so that less seed is required.
Posted by Dilkush Rajpurohit 5 years, 5 months ago
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Parveen Gupta 5 years, 5 months ago
Yogita Ingle 5 years, 5 months ago
An atmosphere is a blanket of gases that surrounds Earth. It is held near the surface of the planet by Earth’s gravitational attraction. Argon, oxygen and nitrogen from the three main constitutions of the atmosphere.
Posted by Kavita Sharma 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Weeding is the process to remove out the weeds. Weeds are unwantedvplants which grown along the useful crops. Weeding is required because weeds are competitive plants as they reduce the useful crop yield by acquiring space, fertilizers and nutrients from the soil.
Posted by Parveen Gupta 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
Yeasts have a wide range of applications mainly in food industry (wine making, brewing, distilled spirits production, and baking) and in biomass production (single-cell protein [SCP]). More recently, yeast has also been used in the biofuel industry and for the production of heterologous compounds.
Posted by Parveen Gupta 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Characteristics of Viruses
- They do not have an organized cell structure.
- They have no cell nucleus.
- They typically have one or two strands of DNA or RNA.
- They are covered with a protective coat of protein called the CAPSID.
- They are inactive when not inside a living cell, but are active when inside another living cell.
Posted by Parveen Gupta 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Viral diseases are infections caused by viruses. Different types of viruses cause different infections. Common cold is the most common type of viral infection that is caused by infections in the respiratory tract. Other viral diseases include:
- Chickenpox
- Herpes
- Influenza
- AIDS
- Mumps
- Measles
- Viral Hepatitis
Posted by Siya Kaur 5 years, 5 months ago
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Posted by Siya Kaur 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
The Resultant force is defined as the total force acting on a body along with their directions. When the object is at rest or travelling with the same velocity, the resultant force has to be zero. Since all the forces are acting towards the same direction, the resultant force should be same for all the forces.
If one force is acting perpendicular to another, the resultant force is determined by using Pythagorean theorem.The Resultant force formula is given by,
FR = F1 + F2 + F3
Where,
F1, F2, F3 are the forces acting in the same direction on a body.
If force F2 is perpendicular to force F1, the resultant force formula is given as,
Posted by Lucky Rajput 5 years, 5 months ago
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Posted by Archana Singh 5 years, 5 months ago
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Bhat Azka 5 years, 5 months ago
Archana Singh 5 years, 5 months ago
Posted by Shreyam Kaushik 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Cultivator save the time and the labour and also plough the field properly, that is why farmer prefer cultivator over plaugh.
Posted by Ayush Balyan 5 years, 5 months ago
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Posted by Ziya 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
- The role of microorganisms in food preparation and beverage manufacturing is known for ages. They are used in the manufacture of bread, curd, wine, and alcohol etc.
- Bacteria are not only present outside the human body, but they also live inside the body too. This aggregate collection of microorganisms that is present on the human body is termed as Microflora.
- Antibiotics go hand in hand with microbes in the medical field. Typically, antibiotics are obtained from a weakened form of an otherwise harmful microorganism. This is then injected into the body and the body learns to fight off the diseases caused by these organisms. Examples of this include mumps and the measles.
- In the environment, microorganisms have two vital roles- one is an enhancement of soil fertility another is cleaning. Azotobacter, Rhizobium, Clostridium are few examples of Nitrogen-fixing bacteria which play a primary role in transforming atmospheric nitrogen into inorganic compounds which are then used by the plants. Without this process, the vast majority of the nitrogen present in the atmosphere becomes unusable.
Posted by Md Aftab Alam 5 years, 5 months ago
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Md Ammar Azam 5 years, 5 months ago
Anish Mishra 5 years, 5 months ago
Posted by Kalpana Shekhawat 5 years, 5 months ago
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Md Ammar Azam 5 years, 5 months ago
Posted by Ritesh Yadav 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
To find the valency of an element, it is absolute that we must know the atomic number of that element.
For example, for the element Carbon
the atomic number is 6
Convert into electronic configuration:. 2, 4
Consider the final shell alone. Here 4 so Subtract 4 from 8
the answer is 4.
Thus, the Valency is 4
For elements with valence electrons 4 and <n4 the Valency is the valence number itself. For example Lithium the valence shell is 1. So Valency is 1️
For elements with valence electrons >4, subtract it from number 8. For example Fluorine the Valency is 2,7 and the valence shell numner is 7. Subtracting from 8 we get 1. so Valency is 1
For elements in the Oxygen group, it is not the same. For example Oxygen has 2,6 . But the valence can be 6 or 2 according to the situation.
Posted by Somya Muskan 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
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Friction is a force that comes into play when two surfaces come in contact with each other.
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The Frictional force or the force of Friction acts in the opposite direction of the motion of the object.
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The force of Friction opposes the relative motion between the surfaces of two moving objects.
Posted by Real Noob Gamer Or Bot 5 years, 5 months ago
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Md Ammar Azam 5 years, 5 months ago
Posted by Arjun Dere 5 years, 5 months ago
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Simran Ahden 5 years, 5 months ago
Posted by Harinder Brar 5 years, 5 months ago
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Posted by Md Ammar Azam 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Plastic is non-biodegradable.So the articles made of plastics do not rot when they are thrown away after use.The waste plastic articles keeps on accumulating in the surrounding and pollute the environment.
The waste plastic articles thrown here and there carelessly get into dirty water drains and sewers,and clog them.This makes the dirty drain water to flow over the streets and roads causing unhygienic conditions.
Posted by Md Ammar Azam 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Microbes are also used to prepare antibiotics, which are used to treat several bacterial infections. Antibiotics are chemical substances that kill disease-causing microbes. It is quite interesting to find that there are some microbes which cause diseases; on the other hand, some other microbes help in preparation of antibiotics, and thus, cure diseases.
Posted by Md Ammar Azam 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Sometimes, same element may exhibit one valency in one compound and another valency in other compound. This property is called as variable valency.
Example
|
Element |
Symbol |
Valencies exhibited (variable valencies) |
|
|
Copper |
Cu |
1, 2 |
Cu+1, Cu+2 |
|
Silver |
Ag |
1, 2 |
Ag+1, Ag+2 |
|
Gold |
Au |
1, 3 |
Au+1, Au+3 |
|
Iron |
Fe |
2, 3 |
Fe+2, Fe+3 |
Posted by Sandhya Gupta 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
Metal oxides are a chemical compound formed between metals, specifically cations such as Na, K, Li, etc., and oxygen. These formations tend to be solid, basic and are more dense than their nonmetallic oxide counterparts. Metal oxides typically contain an anion of oxygen in the oxidation state of −2.
Posted by Amarjeet Singh 5 years, 5 months ago
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Ritesh Yadav 5 years, 5 months ago
Yogita Ingle 5 years, 5 months ago
There are two laws of reflection.
(i) Angle of incidence is always equal to the angle of reflection.
(ii) The incident ray, the normal at the point of incidence, and the reflected ray all lie in the same plane.
Posted by Namita Shina 5 years, 5 months ago
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Rudraksh Paliwal 5 years, 5 months ago
Bhavya Kumari 5 years, 5 months ago
Ritesh Yadav 5 years, 5 months ago
Md Ammar Azam 5 years, 5 months ago
Posted by Rishabh Kumar Gupta 5 years, 5 months ago
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Posted by Amishi Jain 5 years, 5 months ago
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Posted by Prachi Mishra 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Vegetative propagation is defined as the production of new plants from the vegetative plant parts like leaf, stem, roots of the parent plant. In ginger, the vegetative propagation occurs through the underground stem called rhizome. A rhizome is an underground horizontal stem, with stored foods and buds. Manufactured foods are transported down to enable the growth of the rhizome. The lower portion of the rhizome develops roots and helps in the conduction of water and minerals.
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Ritesh Yadav 5 years, 5 months ago
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