Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Aryan Singh 8 years ago
- 1 answers
Posted by Dipankar Verma 8 years ago
- 1 answers
Posted by Affan Ahmad 8 years ago
- 1 answers
Prachi Agarwal 8 years ago
Posted by Yo Yo 8 years ago
- 1 answers
Manisha Kashyap 8 years ago
Posted by Jatin Singh 8 years ago
- 0 answers
Posted by Uttam Prakash 8 years ago
- 1 answers
Amar Kumar 8 years ago
Oxidation number:Oxidation State is the total number of electrons that an atom either gains or loses in order to form a chemical bond with another atom.
An oxidation number is a number that is assigned to an atom in a substance. The oxidation number could be positive, negative, or zero, and it indicates if electrons are lost or gained. In other words, the oxidation number is a number that helps us keep track of electrons in an atom. The oxidation number of calcium is +2 and the oxidation number of oxygen is -2.
Posted by Abhinav Rawat 8 years ago
- 1 answers
Amar Kumar 8 years ago
Ozone is thermodynamically unstable than oxygen because its decomposition into oxygen results in the liberation of heat. Ozone consists of three molecules of oxygen and thus it is in unstable state so in order to get stable it gives up its one molecule of oxygen to restore diatomic state. Eventually, in all thus process large amount of heat is released.
Posted by Sagar Bhatt 8 years ago
- 2 answers
Sanskriti Singh 8 years ago
Amar Kumar 8 years ago
Haloalkanes have a boiling point that is higher than the alkane they are derived from. This is due to the increased molecular weight due to the large halogen atoms and the increased intermolecular forces due to the polar bonds, and the increasing polarizabilty of the halogen.
Posted by Devkant Rai 8 years ago
- 1 answers
Amar Kumar 8 years ago
The following reaction is involved in the extraction of silver after the silver ore has been leached with NaCN. AgS+NaCN---->2Na(Ag(CN)2)+Na2S
Role of NaCN in the extraction of silver (Ag) is to do the leaching of Ag ore in the presence of air from which the silver is obtained later by replacement. In the extraction of gold and silver, the metal is leached with NaCN or KCN, which is an oxidation reaction.During the process, Ag is oxidised to Ag+ then the reaction with Zn results in formation of free metal .
Posted by Rishu Yadav 8 years ago
- 1 answers
Posted by Chhawesh Yadav 8 years ago
- 1 answers
Prachi Agarwal 8 years ago
Posted by Shwetha Saravanan 8 years ago
- 0 answers
Posted by Ajay Kumar 8 years ago
- 1 answers
Posted by Himanshu Bisht 8 years ago
- 1 answers
Khushboo Arora 8 years ago
Posted by Neha Sharma 8 years ago
- 1 answers
Preeti Kranti 8 years ago
Posted by Neha Sharma 8 years ago
- 0 answers
Posted by Simran Kain 8 years ago
- 0 answers
Posted by Manish Bakshi 8 years ago
- 3 answers
Tanuja Biswas 8 years ago
Posted by Manish Bakshi 8 years ago
- 1 answers
Risky Rao 8 years ago
Posted by Fariah Mukarramah 8 years ago
- 0 answers
Posted by Lisa Yadav 8 years ago
- 1 answers
Gaurav Kumar 8 years ago
Posted by Rohit Kuhar 8 years ago
- 0 answers
Posted by Aditya Singh 8 years ago
- 1 answers
Tanuja Biswas 8 years ago
Posted by Kumari Priyanka 8 years ago
- 0 answers
Posted by Shweta Sahni 8 years ago
- 1 answers
Posted by Vishal Tomar 8 years ago
- 1 answers
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Amar Kumar 8 years ago
Starch and cellulose are also composed of the same substance but with different structures. Both starch and cellulose are polysaccharides,that is, both molecules are made up of a lot of sugar molecules. In particular, starch and cellulose are made of the sugar molecule glucose.
Glucose is a type of sugar made of carbon (C), hydrogen (H), and oxygen (O). These elements form a ring with one of the carbons sticking off the end, kind of like a ball of yarn with an unraveled string. There are also alcohol (OH) groups attached to the carbons. There are six carbons numbered from 1 to 6, with the 'unraveled string' hanging off taking the 6th position. Glucose is a 3-D molecule; this means the attached elements can be pointed in different directions at any given time. There are two main forms of glucose: alpha and beta. In alpha glucose, the alcohol attached to carbon 1 is down. In the beta glucose, the alcohol attached to carbon 1 is up.
The structure formed when the molecules share oxygen is determined by which form of glucose is linked together. Starch contains alpha glucose, while cellulose is made of beta glucose. This difference may seem minor, but it plays a big role in the 3-D shape of the molecule. So starch and cellulose have different 3-D structures.
3Thank You