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Ask QuestionPosted by Harsh Rajput 7 minutes ago
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Posted by Parikshit Pasare an hour ago
- 1 answers
Yogita Ingle an hour ago
| Osmosis | Diffusion |
| It is limited only to the liquid medium. | Occurs in all mediums – Solid, Liquid and gas. |
| Requires a semipermeable membrane. | Do not require a semipermeable membrane. |
| Depends on the number of solute particles dissolved in the solvent. | Depends on the presence of other particles. |
| Requires water for the movement of particles. | Do not require water for the movement of particles. |
| Only the solvent molecules can diffuse. | Both the molecules of solute and solvent can diffuse. |
| The flow of particles occurs only in one direction. | The flow of particles occurs in all the directions. |
| The entire process can either be stopped or reversed by applying additional pressure on the solution side. | This process can neither be stopped nor reversed. |
Posted by Arun Yadav 2 hours ago
- 2 answers
Gaurav Seth an hour ago
- a person who writes descriptions of historical events as they happen.
- a person who writes accounts of important or historical events.
- someone who writes chronicles. historian, historiographer - a person who is an authority on history and who studies it and writes about it
Posted by Rahul M 2 hours ago
- 3 answers
Harsh Rajput 6 minutes ago
Gaurav Seth an hour ago
The permanent tissues are formed by the differentiated cells, which become specialised to perform specific functions like protection, support, storage and conduction. The permanent tissues always differentiate from the meristematic cells,
Rajat Singh an hour ago
Posted by Piyush Doneriya 2 hours ago
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Posted by Radhika Durge 3 hours ago
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Yogita Ingle 2 hours ago
Heavy water consists of deuterium instead of hydrogen . Deuterium atom consists one proton and one neutron. Hence, there are total 10 neutrons in a heavy water molecule (2 from deuterium and 8 from oxygen).
Number of heavy water molecules = 10/20 {tex}{{N}{A}}{/tex} = {tex}0.5 {{N}{A}}{/tex}
Mass of neutrons present in 0.5 mol of heavy water = {tex}10/{{N}{A}} x 5 {{N}{A}} = 5 g{/tex}
Posted by Shivaan Shivaan 5 hours ago
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Rishav Thakuria 4 hours ago
Posted by Thumati Saipoojitha 5 hours ago
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Posted by Parnali Paul 7 hours ago
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Gaurav Seth 5 hours ago
m1 = 2kg, u1 = 10m/s, v1 = 1m/s
m2 = 5kg, u2 = 0m/s, v2 = ?
we know that-
m1u1 + m2u2 = m1v1 + m2v2
(2*10) + (5*0) = (2*1) + (5v2)
20 + 0 = 2 + 5v2
18 = 5v2
18 / 5 = v2
3.6 = v2
therefore, the velocity of the second body is 3.6 m/s
Posted by Ranjan Mishra 7 hours ago
- 1 answers
Samit Prasad 7 hours ago
Posted by Ranjan Mishra 8 hours ago
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Posted by Tahura Tahura 16 hours ago
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Aarti Balu 16 hours ago
Posted by Akhil Dalal 21 hours ago
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Gaurav Seth 21 hours ago
The fluid mosaic model was proposed by S.J. Singer and Garth L. Nicolson. This model explains the structure of the plasma membrane of animal cells as a mosaic of components such as phospholipids, proteins, cholesterol, and carbohydrates. These components give a fluid character to the membranes.
Posted by Rajesh Singh 21 hours ago
- 5 answers
Insha Fatima 18 hours ago
Rated Vlogs 19 hours ago
Gaurav Seth 19 hours ago
The Cell Theory is one of the basic principles of biology proposed by the scientists Theodor Schwann, Matthias Schleiden, and Rudolph Virchow.
It states that
i) All living organisms are composed of cells.
ii) The cell is the basic unit of life.
Cells arise from pre-existing cells.
Yogita Ingle 21 hours ago
Mathias Schleiden and Theodor Schwann in 1838 postulated Cell Theory.
The Cell Theory states that:
- All living organisms are formed of one or more cells.
- New cells arise from pre-existing cells by cell division.
- Cell is the fundamental unit of structure and function in living organism.
Posted by Femi Binod 21 hours ago
- 2 answers
Rated Vlogs 19 hours ago
Yogita Ingle 21 hours ago
When the motion of the body is opposite to the direction of acceleration we say the acceleration is negative and when the motion of the body is in same direction as that of acceleration we say the acceleration is positive.
Posted by Vani Tiwari 21 hours ago
- 2 answers
Rajat Singh 19 hours ago
Gaurav Seth 21 hours ago
A force where two forces acting in opposing directions on a body, are not equal in magnitude and in size, is known as an unbalanced force. In an unbalanced force, a body changes its position i.e. we can observe a moving object changing its direction, either increasing the speed or decreasing the speed and a body at rest starts to move and vice versa.
Posted by Op Gamer 22 hours ago
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Posted by Vani Tiwari 23 hours ago
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Yogita Ingle 22 hours ago
When the velocity decreases with respect to time it is termed as retardation or deceleration
In reality negative acceleration is commonly called retardation Its SI unit is m/s2
Posted by Vani Tiwari 23 hours ago
- 2 answers
Rated Vlogs 19 hours ago
Yogita Ingle 22 hours ago
- Velocity: Velocity is the speed of an object moving in a definite direction.
- The SI unit of velocity is also metre per second.
- Velocity is a vector quantity; it has both magnitude and direction.
Posted by Vani Tiwari 23 hours ago
- 1 answers
Yogita Ingle 22 hours ago
- Speed: Distance travelled by the object in unit time.
- The SI unit of speed is metre per second. This is represented by the symbol m s–1 or m/s.
- Speed is a scalar quantity; it only has direction.
Posted by Divya Gupta 1 day ago
- 2 answers
Yogita Ingle 22 hours ago
The sound waves are called mechanical waves because they need a material medium( like solid, liquid or gas ) for their propagation. The sound wave involve the vibrations of the particles of the medium through which they travel .
Mrudula Peddireddy 1 day ago
Posted by Shallu Mehta 1 day, 1 hour ago
- 2 answers
Yogita Ingle 1 day, 1 hour ago
A solution is a homogeneous mixture of two or more substances. A solution has a solvent and a solute as its components. The component of the solution that dissolves the other component in it (usually the component present in larger amount) is called the solvent. The component of the solution that is dissolved in the solvent (usually present in lesser quantity) is called the solute.
Posted by Suhana Mahayich 1 day, 1 hour ago
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Posted by Astika Gurjar 1 day, 2 hours ago
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Yogita Ingle 1 day, 2 hours ago
Cations are positively charged ions. They are formed when a metal loses its electrons. They lose one or more than one electron and do not lose any protons. Therefore they possess a net positive charge. Some examples of cations are Calcium (Ca2+), Potassium (K+), hydrogen (H+).
Posted by S.A. Wadood 1 day, 4 hours ago
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Posted by Rajkunwar Dodiya 1 day, 4 hours ago
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Insha Fatima 18 hours ago
Yogita Ingle 1 day, 4 hours ago
The basic structure of cell consist of nucleus, plasma membrane and cytoplasm. Other than this different structures like Endoplasmic Reticulum(ER), Golgi body, Lysosomes, Mitochondria, Plastids and Vacuoles are also present. All of these are cell organelles. Presence of different cell organelles differ from organism to organism i.e. unicellular or multicellular organism. Cell organelle can be either membrane bound or can lack membrane.
Posted by Ranjan Mishra 1 day, 5 hours ago
- 2 answers
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