Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Mahima Singh 8 years, 1 month ago
- 1 answers
Posted by Amit Rathore 8 years, 1 month ago
- 1 answers
Posted by Abhinandan Bagchi 8 years, 1 month ago
- 0 answers
Posted by Dhana Lakshmi 8 years, 1 month ago
- 0 answers
Posted by Vaibhav Tomar 8 years, 1 month ago
- 0 answers
Posted by Ashish Gupta 8 years, 1 month ago
- 1 answers
Dev Krishan Gupta 8 years, 1 month ago
Posted by Ankit Dogra 8 years, 1 month ago
- 2 answers
Yogita Meghwal 8 years, 1 month ago
Posted by Jyoti Kumari 8 years, 1 month ago
- 2 answers
Nikita Mishra 8 years, 1 month ago
Sumit Gupta 8 years, 1 month ago
Posted by Sumit Gupta 8 years, 1 month ago
- 0 answers
Posted by Aa Mandral 8 years, 1 month ago
- 0 answers
Posted by Ganesh Sahu 8 years, 1 month ago
- 1 answers
Varun Banda 8 years, 1 month ago
Cellulose is an important structural component of the primary cell wall of green plants, many forms of algae and the oomycetes. Some species of bacteria secrete it to form biofilm.
Cellulose is a a largely indigestible polysaccharide (a complex carbohydrate), composed of thousands of glucose molecules
Formula: (C6H10O5)n
Posted by Sumit Gupta 8 years, 1 month ago
- 1 answers
Kritika Trehan 8 years, 1 month ago
The valency of an atom is equal to the number of electrons in the outer shell if that number is four or less. Otherwise, the valency is equal to eight minus the number of electrons in the outer shell. Once youknow the number of electrons, you can easilycalculate the valency.
Posted by Sifat Khan 8 years, 1 month ago
- 0 answers
Posted by Vedant Bijalwan 8 years, 1 month ago
- 1 answers
Varun Banda 8 years, 1 month ago
Crystalline zinc oxide is thermochromic, changing from white to yellow when heated in air and reverting to white on cooling. This color change is caused by a small loss of oxygen to the environment at high temperatures to form the non-stoichiometric Zn1+xO, where at 800 °C, x = 0.00007.
Posted by Manju Yadav 8 years, 1 month ago
- 0 answers
Posted by Gouravi Gupta 8 years, 1 month ago
- 1 answers
Aman Kumar 8 years, 1 month ago
Posted by Gouravi Gupta 8 years, 1 month ago
- 1 answers
Sandeep Singh 8 years, 1 month ago
steric hindrance refers to obstraction to incoming groups due to bulky groups of substrate.
Posted by Rishi Yadav 8 years, 1 month ago
- 0 answers
Posted by Pavan Kumar R 8 years, 1 month ago
- 0 answers
Posted by Swati Rani 8 years, 1 month ago
- 0 answers
Posted by Shibarnab Sarmah 8 years, 1 month ago
- 0 answers
Posted by Bablu Arora 8 years, 1 month ago
- 1 answers
Posted by Shivam Singh 8 years, 2 months ago
- 1 answers
Varun Banda 8 years, 2 months ago
Electrolysis is the process by which ionic substances are decomposed into simpler substances when an electric current is passed through them.
If electricity is passed through molten sodium chloride, the sodium chloride is broken into sodium and chlorine and they collect at their respective electrodes. The metals get precipitated and the gases escape. This ability to break down substance with current is used in many ways.Ex: Electroplating
Posted by Saurabh Shekhar 8 years, 2 months ago
- 2 answers
Varun Banda 8 years, 2 months ago
Covalency is defined as the tendency of an atom to form number of covalent bond with other molecule. N2O5(Dinitrogen pentoxide) is one of the form of the nitrogen atom which belongs to group 15 in the periodic table.
Nitrogen shares it four pair of electrons with oxygen, therefore nitrogen covalency is four (4).
Posted by Nayan Chaturvedi 8 years, 2 months ago
- 2 answers
Varun Banda 8 years, 2 months ago
In organic chemistry, halogenation is the reaction of a halogen with another substance in which a halogen atom ends up as part of that substance. There are two types of halogenation.
Halogen Addition
An example is the addition of bromine to ethene.
C2H4 + Br2 =C2H4Br2
Halogen substitution
Halogens react with alkanes under the influence of heat or light to form alkyl halide The halogen atom replaces a hydrogen atom in the alkane, so this is a substitution reaction.
Aromatic compounds undergo halogen substitution reactions in the presence of Lewis acids.
Aashima Thakral 8 years, 2 months ago
Posted by Deepak Kumar 8 years, 2 months ago
- 1 answers
Varun Banda 8 years, 2 months ago
An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.
Posted by Yogesh Vishnole 8 years, 2 months ago
- 1 answers
Varun Banda 8 years, 2 months ago
A free-radical reaction is any chemical reaction involving free radicals. ... Many radical reactions are chain reactions with a chain initiation step, a chain propagation step and a chain termination step. Reaction inhibitors slow down a radical reaction and radical disproportionation is a competing reaction.
Posted by Satyam Singhrathour 8 years, 2 months ago
- 1 answers
Anjali Tamboli 8 years, 2 months ago
Posted by Nisha Rani 8 years, 2 months ago
- 2 answers
Varun Banda 8 years, 2 months ago
The arrangement or geometry of the atoms in some molecules is such that one end of the molecule has a positive electrical charge and the other side has a negative charge. If this is the case, the molecule is called a polar molecule, meaning that it has electrical poles.
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
Deepak Singh Baghel 8 years, 1 month ago
0Thank You