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What is anomalous property?

Posted by Ayush Chauhan 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Sanidhya Jadaun? 7 years, 1 month ago

Anomalous properties also known as abnormal behaviour . These are actually shown by uppermost element of every group . Due to 1. High electronegativity 2.high polarising power 3. Small size

ANSWER

What is the effect of temperature on rate of reaction, rate constant & equilibrium constant.

Posted by Laveesha Sharma 7 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is ionisation energy

Posted by Daizee . 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Priya Dharshini ☺☺ 7 years, 1 month ago

The ionization energy is qualitatively defined as the minimum amount of energy required to remove the most loosely bound electron, the valence electron, of an isolated neutral gaseous atom, molecule or ion

ANSWER

Arange these forces in ascending order by its strength. London force,dipole induced,H-bond,covalend bond,ionic bond,dipole-dipole force.

Posted by Priya Dharshini ☺☺ 7 years, 1 month ago

CBSE > Class 11 > Chemistry

5 answers

Priya Dharshini ☺☺ 7 years, 1 month ago

Ur welcome

Ankit Singh 7 years, 1 month ago

Thanks for this answer

Priya Dharshini ☺☺ 7 years, 1 month ago

A buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa. Its pH changes very little when a small amount of strong acid or base is added to it. Example for buffer solution would be a mixture of ethanoic acid and sodium ethanoate in solution. I hope this answer helped u.

Ankit Singh 7 years, 1 month ago

Priya u know what is buffer solution

Ankit Singh 7 years, 1 month ago

Dipole dipole , London forces,Dipole induced, hbond

ANSWER

Second law of thermodynamics states what

Posted by Laveesha Sharma 7 years, 1 month ago

CBSE > Class 11 > Chemistry

3 answers

Ankit Singh 7 years, 1 month ago

The second law of thermodynamics states that the total entropy of an isolated system can never decrease over time. The total entropy can remain constant in ideal cases where the system is in a steady state, or is undergoing a reversible process.

Vijay Tripathi 7 years, 1 month ago

S.L Arora

Vijay Tripathi 7 years, 1 month ago

S.L me page no 12.23 pe dekh lo mil jayaga

ANSWER

How can we differentiate between ammonium chloride and lead acetate just by seeing the salt , not by doing salt analysis?

Posted by Disha Purwar 7 years, 1 month ago

CBSE > Class 11 > Chemistry

3 answers

Sanidhya Jadaun? 7 years, 1 month ago

NH4Cl + H+ ==. NH3. + HCl { gaseous form , white fumes}

Sanidhya Jadaun? 7 years, 1 month ago

We can see the mouth of both the bottles which has white fumes over it . Ammonium chloride solution will have white fumes . Since the solution has hydrogen bonding , there will be H+ ions in it. Then chloride ion will react with H+ to form HCl gas which is white in colour.

Kartik Gupta 7 years, 1 month ago

LOL???

ANSWER

What is Kepler's laws

Posted by Narendra Sahu 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Yogita Ingle 7 years, 1 month ago

Kepler’s 1st Law: Law of Orbits

Statement: - The orbit of every planet is an ellipse around the sun with sun at one of the two foci of ellipse.

Kepler’s 2nd law: Law of Areas

Statement:-The line that joins a planet to the sun sweeps out equal areas in equal intervals of time.

Kepler’s 3rdLaw: Law of periods

Statement: -

According to this law the square of time period of a planet is ∝ to the cube of the semi-major axisof its orbit.
Suppose earth is revolving around the sun then the square of the time period (time taken to complete one revolution around sun) is ∝ to the cube of the semi major axis.
It is known as Law of Periods as it is dependent on the time period of planets.

ANSWER

BF3 has zwro dipole moment although thw B-F bonds are polar.why?

Posted by Akshara Kona 7 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Sanidhya Jadaun? 7 years, 1 month ago

In BF3 case all the resultant dipoles will cancel each other . Hence , it is non polar .

Sanidhya Jadaun? 7 years, 1 month ago

In B----F. F has high electronegativity so the electron which has been shared would shift towards F . F will posses partial -ve charge and B will get partial +ve charge. Hence , it is polar.

ANSWER

What is chemical equilibrium

Posted by Rishikesh Ranjan 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Priya Dharshini ☺☺ 7 years, 1 month ago

chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system

ANSWER

give me unique topic for chemistry projected file

Posted by Vinay Vinay 7 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Volumetric anyalasis kis chatper se related h

Posted by Babli Rani Gupta 7 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Difference between bonding molecular orbital and anti bonding molecular orbital?

Posted by Sumit Kumar 4 years, 7 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 4 years, 7 months ago

Bonding molecular orbital	Anti Bonding molecular orbital
Molecular orbitals formed by the additive effect of the atomic orbitals is called bonding molecular orbitals	Molecular orbitals formed by the subtractive effect of atomic is called anti-bonding molecular orbitals
Probability of finding the electrons is more in the case of bonding molecular orbitals	Probability of finding electrons is less in antibonding molecular orbitals. There is also a node between the anti-bonding molecular orbital between two nuclei where the electron density is zero.
These are formed by the combination of + and + and – with – part of the electron waves	These are formed by the overlap of + with – part.
The electron density, in the bonding molecular orbital in the internuclear region, is high. As a result, the nuclei are shielded from each other and hence the repulsion is very less.	The electron density in the antibonding molecular orbital in the internuclear region is very low and so the nuclei are directly exposed to each other. Therefore the nuclei are less shielded from each other.
The bonding molecular orbitals are represented by σ, π, δ.	The corresponding anti-bonding molecular orbitals are represented by σ∗ , π∗, δ∗.

ANSWER

What is hybridization..???

Posted by Yash Jangra 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Sumit Kumar 7 years, 1 month ago

It is the phenmena in which redistribution of energy takes place such that newly formed hybrid orbitals have equal energy.

ANSWER

BeCl2 can easily hydrolyzed.Explain

Posted by Arti Srivastav 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Ankit Singh 7 years, 1 month ago

Becl2is a polar covalent compound and as water is polar covalenT compound polar covalent compounds get easily dissolved in polar covalent compounds so do bacl2 sO it get easily hydolyzed

ANSWER

Plz tell how to study sst of class 10 to score good marks in board i thought of asking senior would be a better option so plz tell plz be kind hearted to me by telling the answer

Posted by Aman 4 Singh 7 years, 1 month ago

CBSE > Class 11 > Chemistry

3 answers

Priya Dharshini ☺☺ 7 years, 1 month ago

Best suggestion i can give is read the chapter whole.or ask ur teacher to give brief explanation of chapters u dont understand and for history u need to read whole book or youtube videos. Write ur answer for five marks minimum 6 points.try to write answer point wise and big this gives examinar good impression on ur paper.my sst paper was excellently presented.i scored good marks by these suggestions only. All the best

Aman Kumar 7 years, 1 month ago

Hey, listen junior.. First go for a full chapter reading with clear understanding.... If u have less time... Then don't waste to read whole chapter... Just know the story of the chapter and mainly focus on the important topics... Becoz in board important topics will only come... And yah.. At least revise that in a week twice.. It will make u best in that chapter... But u have time now.. U can go 4 full chapter reading.... ? HOPE IT HELPS....

Sanidhya Jadaun? 7 years, 1 month ago

Start reading your ncert textbooks Its not been late you start reading from today Revise it atleast 3 times You will surely get a good result I also got

ANSWER

Why there are two value of Rydberg constant?

Posted by Subham Sapkota 7 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Explain the stability of half filled and full filled

Posted by Alyen Sharma 7 years, 1 month ago

CBSE > Class 11 > Chemistry

4 answers

Alyen Sharma 7 years, 1 month ago

Ok... ?

Prabhat Emmanuel 7 years, 1 month ago

I Only know that half filled or full filled orbitals are more stable than other orbitals

Alyen Sharma 7 years, 1 month ago

Orbitals

Prabhat Emmanuel 7 years, 1 month ago

.......

ANSWER

What is region behind ductility and malleability

Posted by Harsh Chauhan 7 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Subham Sapkota 7 years, 1 month ago

Ductility is said to be the property of material to stretch without getting damaged. Metals having ductile property can be Stretched into wires........... Malleability is said to be the property of a material to deform under compression . The metals having malleable property can be rolled into sheets

Priya Dharshini ☺☺ 7 years, 1 month ago

The energy is transferred throughout the rest of the metal by the moving electrons. Metals are described as malleable (can be beaten into sheets) and ductile (can be pulled out into wires). This is because of the ability of the atoms to roll over each other into new positions without breaking the metallic bond.

ANSWER

Why is the satandard enthalpy of formation of diamond not zero although it is an element

Posted by Sumit Kumar 7 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is iupac

Posted by Darshil Verma 7 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Vikram Sharma 7 years, 1 month ago

(International union of pure and applied chemistry )this is the international organisation which makes regulations about concepts of chemistry

Priya Dharshini ☺☺ 7 years, 1 month ago

The International Union of Pure and Applied Chemistry is an international federation of National Adhering Organizations that represents chemists in individual countries. It is a member of the International Council for Science.

ANSWER

Hyperconjugatin in organic chemistry

Posted by Anurag Patel 7 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is the important atom in earth

Posted by Shubham Dabrey 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Priya Dharshini ☺☺ 7 years, 1 month ago

Silicon and oxygen. Silicon dioxide is one of most abundant element in earth

ANSWER

Pcl5 is more covalent than pcl3.why?

Posted by Ankita Parashar 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Sajid Ali 7 years, 1 month ago

You just see the Lewis dot structure of PCl5 and PCl3

ANSWER

Whats happen to the ph if a few drops of hcl is added to ch3coonh4 solution

Posted by Yash Chauhan 7 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Explain hydrogen bond write its signification

Posted by Preet Singh 7 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Vikram Sharma 7 years, 1 month ago

Hydrogen has one valence electron in its only shell . It shares it's electron with other hydrogen atom and form h-h bond. It's Lewis structure (h:h) .

Priya Dharshini ☺☺ 7 years, 1 month ago

simple way to explain hydrogen bonds is with water. Since oxygen is more electronegative than hydrogen, oxygen pulls the shared electrons more closely to itself. This gives the oxygen atom a slightly more negative charge than either of the hydrogen atoms.

ANSWER

Calculate the energy of first orbit of He+ ion and what is its radius

Posted by Niranjan Ajith 7 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Sajid Ali 7 years, 1 month ago

Radius is 12pm

Sajid Ali 7 years, 1 month ago

Energy is 13.6 eV

ANSWER

A first order reaction is 50% complete in 40 min at 300k and in 20 minutes at 320k . Calculate the activation energy of the reaction.

Posted by Gulveer Singh 7 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Calculate oxidation number of chlorine in Icl

Posted by Priyanshu Mishra 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Avantika Tayal 7 years, 1 month ago

-6

ANSWER

Why we are useing active mass[ ] in equilibrium

Posted by Sameer Kumar 7 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Pragati Gola 7 years, 1 month ago

Square bracket [ ] denots the concentration.

Nitesh Malik 7 years, 1 month ago

Actuve mass word is used for concentration term Kc in the chapter

ANSWER

a hydrocarbon on complete combustion give 0.33g of CO2 and 0.18 g of H2O. the empirical formulae is

Posted by Nancy Rajput 7 years, 1 month ago

CBSE > Class 11 > Chemistry

5 answers

Aman Kumar 7 years, 1 month ago

Then go for related questions of it... Other than that I don't know sry... ?

Nancy Rajput 7 years, 1 month ago

ok but i don't get it from any website so what can i do

Kaira Choudhary 7 years, 1 month ago

Hlo

Aman Kumar 7 years, 1 month ago

For urgency, u can go to any other websites on net....

Nancy Rajput 7 years, 1 month ago

pls answer this its urgent ?

ANSWER

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