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Meghna Thapar 6 years, 1 month ago
A monatomic ion is an ion consisting of exactly one atom. If an ion contains more than one atom, even if these are of the same element, it is called a polyatomic ion. Example - H+ for hydrogen ion, Li+ for lithium ion, Na+ for sodium ion.
Posted by Nandani Tamboli 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
Nephron is the basic functional unit of kidneys that consists of a glomerulus and its associated tubules through which the glomerular filtrate passes before it emerges as urine.
Functions of Nephron
The primary function of nephron is removing all waste products including the solid wastes, and other excess water from the blood, converting blood into the urine, reabsorption, secretion, and excretion of numerous substances.
As the blood passes through the glomerulus with high pressure, the small molecules are moved into the glomerular capsules and travel through a winding series of tubules.
The cell present in each tube absorbs different molecules excluding the glucose, water, and other beneficial molecules which are called ass the ultrafiltrate. As the ultrafiltrate molecules travel down the tubules they become more and more hypertonic, which results in more amount of water to be extracted from the ultrafiltrate before it exits the nephrons.
The blood surrounding the nephron travels back into the body through the renal blood vessels, which are free of toxins and other excess substances. The obtained ultrafiltrate is urine, which travels down via the collecting duct to the bladder, where it will be stored and released through the urethra.
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Yogita Ingle 6 years, 1 month ago
Electrolytic refining of copper:
In the process of electrolytic refining of copper, the electrolyte used is acidified copper sulphate.
Impure metal is made as an anode and pure metal is made as a cathode.
On passing the electric current through the electrolyte, the impure metal from anode dissolves into the electrolyte solution and pure metal from copper sulphate solution deposits on the cathode.
At Anode: Cu → Cu2+ + 2e-
At Cathode: Cu2+ + 2e- → Cu
The soluble impurities go into the solution and insoluble impurities settle down at the bottom of an anode and are known as anode mud.
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Yogita Ingle 6 years, 1 month ago
Kidneys are the organs that play a major role in the functioning of different organs of the Human body. They are involved in the removal of waste matters from our body and also is involved in the purification of blood. The word ‘Nephritis’ is a kind of disease that causes inflammation in the kidney bladder. It generally affects the interstitial tissues which surround the tubules and the glomeruli present in the kidney. It is also called as Acute nephritis.
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Posted by Shrusti Mahendrakar 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
Principle: An electric generator works on the principle of electromagnetic induction. When a coil is rotated between the magnet or when the magnet is rotated in and out of the coil the current is induced in the coil and the direction of current is given by Fleming's right hand rule.
Posted by Pooja Patel 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
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Chemical evolution |
Organic evolution |
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1. It occurs due to changes in the structure of molecules; from complex molecules to simple molecules with the passage of time. |
1. It occurs due to changes in a species which appear generation after generation and accumulate to form a new species. |
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2. It is a relatively fast process and hence, it is possible to prove it in a laboratory. |
2. It is a very slow process and hence, it is impossible to prove it in a laboratory. |
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3. It involves the evolution of chemicals such as water vapour, methane, ammonia and hydrogen into organic molecules such as sugars which later combined to form big molecules such as proteins, RNA and DNA. |
3. It involves the evolution of enzymes, proteins, RNA and DNA into membrane bound proto cells and finally into living cells. |
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4. Chemical evolution came into being before organic evolution. |
4. Organic evolution is a consequence of chemical evolution. |
Posted by Aftab Alam 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
A rheostat is a variable resistor or an adjustable resistor.Its resistance can be varied as desired.It is a continuous resistance varying device used to change the magnitude of current in a circuit by changing the length of the resistance wire inserted into the circuit.The main use of a rheostat is as variable resistance .
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Posted by Gursewak Boparai 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
| Baking Soda | Baking Powder |
| Has only one ingredient – Sodium Bicarbonate | Consists of many ingredients including Bicarbonates (typically baking soda), and acid salts. |
| Does not contain Monocalcium Phosphate | Contain Monocalcium Phosphate, which reacts with NaHCO3 when wetted and heated. |
| Reacts immediately with acids | It does not immediately react when exposed to acids. |
| Short leavening process | The leavening process extended with the help of a second acid. |
| Baking products formed when baking soda is used are not as fluffy when compared to baking powder products, due to shorter reaction duration. | Gives fluffier products from baking |
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Dilbagh Singh 6 years, 1 month ago
1Thank You