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Ask QuestionPosted by Kishan Singh Negi Negi 4 years, 7 months ago
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Meghna Thapar 4 years, 7 months ago
- Bohr's Model of an Atom:
Niels Bohr, revised Rutherford’s atomic model and put forth the following suggestions:
Neils Bohr proposed that the electrons possess a specific amount of energy which allows them to revolve around the nucleus. The electrons are confined to these energy levels. While revolving in these discrete orbits, the electrons do not radiate energy. Hence, these orbits are also known as stationary orbits or stationary shells. Smaller the size of the orbit, smaller is its energy.
As we move away from nucleus, the energy of the orbit increases progressively. The transfer of an electron from one orbit to another is always accompanied with absorption or emission of energy. When an electron jumps from a lower energy level to a higher energy level, it absorbs energy. When an electron returns from a higher energy level to a lower energy level, it emits energy.
Posted by Ramdash Gangwar 4 years, 7 months ago
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Anshu Kumar 4 years, 7 months ago
Posted by Palak Dabas 4 years, 7 months ago
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Meghna Thapar 4 years, 7 months ago
Vertebrates are the organisms having vertebral coloumn.
Characteristics of Vertebrates:
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- Vertebrates show true vertebral column and endoskeleton.
- Complex body organization and differentiation is seen.
- They are bilaterally symmetrical, triploblastic, coelomic and segmented.
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Posted by Aman Raj 4 years, 7 months ago
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Posted by Sristi Rani 4 years, 7 months ago
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Meghna Thapar 4 years, 7 months ago
- The flow of charge through any conductor per unit time constitutes electric current.
- When 1 coulombs of charge flow through any cross-section of a conductor in 1 second, the electric current flowing through it is said to be 1 ampere.
Posted by Nishitha Keerthana 4 years, 7 months ago
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Posted by Sai Gupta 4 years, 7 months ago
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Suryaveer Singh Chauhan 4 years, 7 months ago
Posted by Vandit Gupta 4 years, 7 months ago
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Meghna Thapar 4 years, 7 months ago
- Sound waves are longitudinal waves as the particles of the medium through which the wave propagates vibrate in a direction parallel to the direction of propagation of waves.In longitudinal waves, the individual particles of the medium move in a direction parallel to the direction of propagation of the disturbance. The particles do not move from one place to another but they simply oscillate back and forth about their position of rest. This is exactly how a sound wave propagates, hence sound waves are longitudinal waves.
Posted by Vandit Gupta 4 years, 7 months ago
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Avinash Appus 4 years, 7 months ago
Posted by Spectra Moonshine 4 years, 7 months ago
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Meghna Thapar 4 years, 3 months ago
Ammonia, a colorless gas with a distinct odor, is a building-block chemical and a key component in the manufacture of many products people use every day. ... The human body makes ammonia when the body breaks down foods containing protein into amino acids and ammonia, then converting the ammonia into urea. Ammonia is also used as a refrigerant gas, for purification of water supplies, and in the manufacture of plastics, explosives, textiles, pesticides, dyes and other chemicals. It is found in many household and industrial-strength cleaning solutions.
Posted by Hari Om 4 years, 7 months ago
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Yogita Ingle 4 years, 7 months ago
- Depletion in the ozone layer of the atmosphere is called ozone depletion.
- The ozone layer or the ozone shield called the ozonosphere is present in the stratosphere at an altitude of 23–25 km over the equator and at a slightly lower altitude of 11–16 km over the poles.
- The ozone layer functions as a shield against strong UV radiations and protects the Earth from these harmful radiations.
Posted by Coc Level 4 years, 7 months ago
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Yogita Ingle 4 years, 7 months ago
| Healthy |
Disease Free |
|
A state of complete physical, mental and social well being |
State of the absence of discomfort in any part of the body |
|
It depends upon the individual as well as on social and environmental factors |
It depends on the individual only |
| A healthy person will be disease-free |
A disease-free person may or may not be healthy |
| A healthy person is energetic and is able to perform as per the requirement |
The performance of a disease-free person depends upon the environment and personal attitude |
Posted by Arpitha Jacob 4 years, 7 months ago
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Gaurav Seth 4 years, 7 months ago
"At 273 Kelvins, water is less effective than ice because ice can easily form water by absorbing surrounding heat energy, whereas water has no such property and therefore ice gets cooled (changes into water) faster than water at "same temperature".
A concept Latent heat is required for the phase transition of any substance from "solid to liquid" and from liquid to gas.
Latent fusion heat is the energy required to convert the phase from "solid to liquid" at the point of fusion.
"Latent Heat of Vaporization" is the energy needed to change from liquid state to gas state."
Posted by Mudit Maheshwari 4 years, 7 months ago
- 2 answers
Yogita Ingle 4 years, 7 months ago
Wave motion is the transfer of energy and momentum from one point of the medium to another point of the medium without actual transport of matter between two points. Wave motion is classified into three different ways they are,
- The medium of propagation,
- The dimensions in which a wave propagates energy,
- The energy transfer
Posted by Shreyas Soni 4 years, 7 months ago
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Nikitha Mattupalli 4 years, 7 months ago
Posted by Akash Trivedi 4 years, 7 months ago
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Mudit Maheshwari 4 years, 7 months ago
Varshith P Sujith 4 years, 7 months ago
Varshith P Sujith 4 years, 7 months ago
Posted by Soumya Dandapat 4 years, 7 months ago
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Mudit Maheshwari 4 years, 7 months ago
Posted by Utkarsh Oberoi 4 years, 7 months ago
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Posted by Darshan Jain 4 years, 7 months ago
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Meghna Thapar 4 years, 3 months ago
Fertile soil possess lots of humus because (i) Humus is required for binding soil particles into crumbs. Crumbs
formation is needed for both hydration and aeration of soil. (ii) Humus makes the soil porous for easy passage of roots. (iii) It is source of minerals. (iv) Humus contains chemicals that promote growth of plants.
Posted by Chinku Achary 4 years, 7 months ago
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Meghna Thapar 4 years, 3 months ago
Meristematic tissueis responsible for growth of plant. Meristematic tissue has the ability to divide and redivide to provide growth to plants.Generally, growth of plants occurs from specific region like root and shoot, nodes, girth of stem, leaf base etc. Therefore, meristematic tissue is present in these regions. Types of meristematic tissue are apical meristem, Intercalary meristem, lateral meristem.
- Apical meristem is present on root and shoot tips of the plant. This tissue divides and results in growth of stem and roots of the plant.
- Intercalary meristem is present on leaf base and nodes.
- Lateral meristem is responsible for increase in circumference i.e. girth of the stem or root of the plant.
Meristematic tissue can divide and redivide upto an extent, after this they lose the ability to divide, thereby, converting into permanent tissue. Growth in plants with meristematic tissue can be easily demonstrated experimentally with help of onion bulbs.
Posted by Subhrojit Mazumder 4 years, 7 months ago
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Meghna Thapar 4 years, 7 months ago
The food eaten by animals is called feed. The animal feed is of two types:
(i) Roughage – It largely contains fibres such as green fodder, silage, hay and legumes.
(ii) Concentrates – It includes the mixture of substances which are rich in one or more nutrients. Concentrates are low in fibres and contains relatively high proteins and other nutrients. Example – oil seeds, cotton seeds, oats, barley, jowar, gram etc.
Posted by Souham Sharma 4 years, 7 months ago
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Utkarsh Oberoi 4 years, 7 months ago
Posted by Pramod Gowda B R 4 years, 7 months ago
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Ritu Franklin 4 years, 7 months ago
Posted by Pramod Gowda B R 4 years, 7 months ago
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Bhumi Agarwal 4 years, 7 months ago
Posted by Vinayaka Enterprises 4 years, 7 months ago
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Posted by Lovely Gupta 4 years, 7 months ago
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Meghna Thapar 4 years, 7 months ago
Speedometer, instrument that indicates the speed of a vehicle, usually combined with a device known as an odometer that records the distance traveled.
Posted by Kaish Raza 4 years, 7 months ago
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Posted by Sunita Kumari 4 years, 7 months ago
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Ishpinder Dhillon 4 years, 7 months ago
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