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Ask QuestionPosted by Dharamveer Kumar 5 years, 4 months ago
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Posted by Dharamveer Kumar 5 years, 4 months ago
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Unnati Dwivedi 5 years, 4 months ago
Yogita Ingle 5 years, 4 months ago
Carbohydrates are a vital source of the three basic necessities of life, that is, food, clothing and shelter. Carbohydrates constitute a very large group among various naturally occurring organic compounds. In nature, they are primarily produced by plants during photosynthesis.
EX: Cane sugar, Glucose and starch.
Classification on the basis of number of units of sugar
Saccharides can be monosaccharides, disaccharides, oligosaccharides and polysaccharides.
The simplest saccharide or unit of saccharides are known as Monosaccharides, such as Glucose. When two monosaccharides are joined by glycosidic bond, they form Disaccharides, such as Sucrose. Sucrose is composed of Glucose and Fructose.
When 2 to 10 units of monosaccharides are joined, they form Oligosaccharides, such as Raffinose. When more than 10 monosaccharides are joined, they form Polysachharides. Such as starch, cellulose etc.
Classification on the Basis of Functional Group Present
Aldoses contain the aldehyde group. For Example: Glucose, Galactose, Ribose, Glyceraldehyde, etc.
Ketoses contain the ketone group. For Example: Fructose
Reducing sugars contain a hemiacetal or hemiketal group. For Example: Glucose, Galactose, Fructose, Maltose, Lactose
Non-reducing contain no hemiacetal groups. For Example: Sucrose and all polysaccharides are non-reducing sugars.
Posted by Dharamveer Kumar 5 years, 4 months ago
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Posted by Dharamveer Kumar 5 years, 4 months ago
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Posted by Dharamveer Kumar 5 years, 4 months ago
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Posted by Dharamveer Kumar 5 years, 4 months ago
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Mahendra Jat 5 years, 4 months ago
Posted by Dharamveer Kumar 5 years, 4 months ago
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Mahendra Jat 5 years, 4 months ago
Posted by Dharamveer Kumar 5 years, 4 months ago
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Mahendra Jat 5 years, 4 months ago
Posted by Anjali Thakur 5 years, 4 months ago
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Posted by Anjali Thakur 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
A solution is created when a solid gets dissolved into the liquid. The vapour pressure formed from this solution is lowered by the addition of the solute. Here comes the Vapour pressure formula using Raoult’s law, which explains how the vapour pressure of a liquid gets changed by the addition of a solute.
P solution = (X solvent )( Po solvent )
X solvent = the mole fraction of the solvent in the solution
P solution = the vapour pressure of the solution
P°solvent = the vapour pressure of the solvent
Posted by Unnati Dwivedi 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
The two solutions having equal vapour pressure are called isopiestic solution.
Posted by Prince Kumar Sah 5 years, 4 months ago
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Devil ? 5 years, 4 months ago
Avishka Singh 5 years, 4 months ago
Posted by Tanushri Karki 5 years, 4 months ago
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Posted by Janvi Patel 5 years, 4 months ago
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Prince Kumar Sah 5 years, 4 months ago
Gaurav Seth 5 years, 4 months ago
Solids have a fixed shape and a fixed size. The particles are very close together and held in place by strong forces (bonds). Their particles cannot move around, but they do vibrate. Because the particles cannot move around, a solid has a fixed shape.
OR
Because of the strong intermolecular force of attraction in solids, the particles are compact and thus solids are rigid and have a definite shape.
Whereas in case of liquid and gas, the intermolecular forces are not that strong due to which the particles are loosely held and can move. Hence they don't have a definite shape.
Posted by Lifes Crush 5 years, 4 months ago
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Posted by Anamika Bawa 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
artificial rainfall occurs when oppositely charged clouds meets. Since, clouds are colloidal in nature and carry charge. Spray of silver iodide, an electrolyte from aeroplane results in coagulation of colloidal water particles leading to rain. Sometimes electrified sand is also used for this purpose.
Posted by Nishtha Choudhary 5 years, 4 months ago
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? Yang ? 5 years, 4 months ago
Posted by Anushka Shrivastava 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
Starch
• Main sources of starch are wheat, maize, rice, potatoes and barley.
• It is a white amorphous powder, in-soluble in cold water.
• It is a polymer of α-glucose and consists of two components- Amylose and Amylopectin.
o Amylose: It is a linear polymer of α‒ glucose. It is water soluble and gives blue colour with iodine solution.
o Amylopectin: It is a branched chain polymer of α‒ glucose. It is water in-soluble and does not give blue colour with iodine solution.
Posted by Shagun Singh 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
|
Order |
Molecularity |
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It is the sum of powers of the concentrations in the rate law expressions. |
It is the number of moleculesr of the reactants taking part in an elementary reaction. |
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Order corresponds to the overall reaction. |
Molecularity is for elementary reactions. |
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Order might involve one elementary reaction or it might involve a sequence of elementary reactions. |
Molecularity is a part of the whole reaction. |
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It is an experimentally determined value. |
It is a theoretical concept. |
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It can have fractional value. |
It is always a whole number. |
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It can assume zero value. |
It can not have zero value. |
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Order of a reaction can change with the conditions such as pressure, temperature, concentration etc. |
Molecularity is invariant for a chemical equation. |
Posted by Arshi Khan 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Oxygen is one of the most important elements in the universe
Posted by Rounak Laimayum 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Weight of glucose=1.8 g
In 1.8 g of glucose,
No. of carbon atoms =3.5×1022
No. of hydrogen atoms =7.15×1022
No. of oxygen atoms =3.5×1022
Posted by Aashi Chaurasia 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Amorphous Solids
- The term amorphous solid is derived form a Greek word amorphous meaning no form.
- The constituent particles are arranged in a short range order with a regular and periodically repeating pattern over short distances.
- These solids get softened at a certain temperature and hence can be moulded and drawn into various desired shapes. Solids may also acquire crystalline form at some temperature when heated.
- These solids have the ability to flow very slowly due to which they are also termed as pseudo solids or super cooled liquids.
- These solids are isotropic in nature due to the absence of long range order and irregular arrangement of the constituent particles in all direction. This leads to same value of physical property along all the direction.
Posted by Shrinidhi M 5 years, 4 months ago
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Ifa Mydeen 5 years, 4 months ago
Posted by Anushka Shrivastava 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
Cr has five unpaired d-electrons. Hence metallic bonds are strong. In Hg, there is absence of unpaired electrons and size is larger.
Chromium has unpaired electrons which result in strong metallic bonding which results in it being a hard solid and the absence of unpaired electrons in Hg result in it being a liquid.
Posted by Anushka Shrivastava 5 years, 4 months ago
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Avani Sharma 5 years, 4 months ago
Posted by Mr. Singh 5 years, 4 months ago
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Shiva Rajpoot 5 years, 4 months ago
Gaurav Seth 5 years, 4 months ago
Stereochemistry is the branch of chemistry that involves “the study of the different spatial arrangements of atoms in molecules”. Stereochemistry is the systematic presentation of a specific field of science and technology traditionally requires a short preliminary excursion into history. Stereochemistry is the ‘chemistry of space ‘, that is stereochemistry deals with the spatial arrangements of atoms and groups in a molecule.
Yogita Ingle 5 years, 4 months ago
Stereochemistry is the systematic presentation of a specific field of science and technology traditionally requires a short preliminary excursion into history. Stereochemistry is the ‘chemistry of space ‘, that is stereochemistry deals with the spatial arrangements of atoms and groups in a molecule.
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Yogita Ingle 5 years, 4 months ago
1Thank You