CBSE > Class 11 > Chemistry | CBSE Board | Homework Help

This kind of electron distribution in unsaturated compounds conjugated with electron-releasing or withdrawing groups or atoms is called mesomeric effect. The inductive effect is a permanent state of polarization. The electron density in a bond between two unlike atoms is not uniform.

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How to deal with redox reaction

Posted by Divyansh Singh 7 years, 2 months ago

CBSE > Class 11 > Chemistry

2 answers

Aakash Sir 7 years, 2 months ago

Spelling mistakes reduction + oxidation = redox reaction

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Aakash Sir 7 years, 2 months ago

Reation + oxidation = redox reaction

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What are uses of hydrogen

Posted by Bhawna Haldiya 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Munuho Lohe 7 years, 2 months ago

1) used in manufacture of metal hydrides and hydrogen chloride 2) used to reduce heavy metals oxides to metals and used as a rocket fuel in space research

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What is dynamic equilibria

Posted by Vaibhav Yadav 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Christin Mathew 7 years, 2 months ago

At which reaction rate and product rate are at equilibrium

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Give me a beautiful topic for project file(13 pages)

Posted by Mr. Perfect 7 years, 2 months ago

CBSE > Class 11 > Chemistry

3 answers

Chesta Pawan Manchanda 7 years, 2 months ago

History of carbon compound

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Christin Mathew 7 years, 2 months ago

Environment chemistry

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Subhra Mistry 7 years, 2 months ago

What subject?

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Is there any chapter added in chemistry??

Posted by Saba Elias 7 years, 2 months ago

CBSE > Class 11 > Chemistry

3 answers

Christin Mathew 7 years, 2 months ago

Solid state +p-block elements from +2 syllabus

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Aman Kumar 7 years, 2 months ago

Yah... Solid state chapter is added...

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Vicky Kumar 7 years, 2 months ago

Solid state

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Why lithium is called as a strongest reducing agent??

Posted by Laxita Kawre 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Bhawna Haldiya 7 years, 2 months ago

Alkali metal are very good reducing agents because of their tendency to lose electrons . The reducing charater increase from Na to Cs .However ,Li is stronger reducing agent .........Lithium being small in size has high ionization enthalpy .

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Define the law of multiple proportion with ex.

Posted by Kapil Dev 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Aman Kumar 7 years, 2 months ago

When 2 elements combined together to form compound, then then the weight of the element combined with the fixed weight of another element bear a simple whole number ratio...

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What is Henry law

Posted by Sakshi Yadav 7 years, 2 months ago

CBSE > Class 11 > Chemistry

2 answers

Subhra Mistry 7 years, 2 months ago

Extremely informative abhiveer.

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Abhiveer Tiwari 7 years, 2 months ago

Law proposed by henry

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why in NaBH4 oxidation no of B is -3

Posted by Nipun Sharma 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Pragati Gola 7 years, 2 months ago

Let the oxidation number of B in NaBH4 is x then, oxidation number of Na+oxidation number of B+oxidation number of H=net charge on NaBH4 =1+x+(-1)4=0 =x-4+1=0 x=+3

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Which object is fully isolated system

Posted by Pradhnya Daf 7 years, 2 months ago

CBSE > Class 11 > Chemistry

2 answers

Sunny Bhardwaj 7 years, 2 months ago

We can't say anything fully isolated.....but some isolated systems are thermos flask , hotcase ,

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Ʌɐpɐʎ Ɐuɐɥsɹɐp . 7 years, 2 months ago

Thermos flask or any other closed isolated vessel.

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W Monut of work is done by the system nd q amount of heat is supplied to the system what type of system it woulb be why only closed syatem nd why not open nd isolated plzz tell me

Posted by Rohit Kumar 7 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

calculate the amount of work done and change in internal energy by 2 moles of ideal gas equation at 298 kelvin is in reversible isothermal expensive form 10 litre to 20 liter by absorb heat 4000 Joule

Posted by Gourav Awasthi 7 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

How did Mendeleev's periodic table help in predicting new elements

Posted by Vedaant Choudhury 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Zalak Patel????️ 7 years, 2 months ago

Bcoz he left some places for elements to put new introduce elements

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Which element of s block doesn't react with water.....???

Posted by Ayush Pandey 7 years, 2 months ago

CBSE > Class 11 > Chemistry

2 answers

Shivshant Upadhyay 7 years, 2 months ago

Be.

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Utsav Kumar Shukla 7 years, 2 months ago

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What do you mean by dual behaviour of matter?

Posted by Yash Kumar 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Saksham Bhasin 7 years, 2 months ago

Dual behaviour of matter means matter has both particle as well as wave like properties.

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What is the difference between reductant agent and reduction according to concept of electron

Posted by Sandeeep Singh 7 years, 2 months ago

CBSE > Class 11 > Chemistry

2 answers

Sandeeep Singh 7 years, 2 months ago

Thanks bro

1Thank You

Aman Kumar 7 years, 2 months ago

Difference between reductant agent and reduction is:- In reduction, gain of electron take place but in case of reluctant agent,.. The species which loss electron itself to make the gain of electron for other one...

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The concerntration of hydrogen ionization of a soft drink is 3.8×10-8M calculate its ph

Posted by Rubaba Batool 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Pragati Gola 7 years, 2 months ago

pH =-log (H+ ion) =-log (3.8×10^-8) =-[log (3.8)+log(10^-8)] =-[-7.42] =7.42

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Calculate of moles in 0.04 litres of H2

Posted by Radhika Singh 7 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

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Calculate the force of gravitation b/w two bodies. Each of mass 100kg and 1 m apart on the surface of the earth. What is forve of gravitation?

Posted by Justin Bieber 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Sandeeep Singh 7 years, 2 months ago

F=G Mm/r squre F= 6.7 X 10's power minus 11 X 100 X 100/squre of 1

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Anybody have blueprint of half yearly chemistry class 11 kv

Posted by Krishna Krishna Chaturvedi 7 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

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By which method we can separate the components from mixture of calcium sulphate and camphor?

Posted by Vishal Babu 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Abhi Yaduvanshi 7 years, 2 months ago

By method of sublimation

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What is hybridisation of PH3

Posted by Sahil Lotan 7 years, 2 months ago

CBSE > Class 11 > Chemistry

2 answers

Krishna Murari 7 years, 2 months ago

Sp3

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Barak Shabh?? 7 years, 2 months ago

Sp3

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What is the difference in the orbital angular momentum of 2p and 3p electron ? Explain

Posted by Anish Sharma 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Neha Jakhar 7 years, 2 months ago

Both are same

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What is the si unit of mass

Posted by Rahul Gurjar 5 years, 9 months ago

CBSE > Class 11 > Chemistry

4 answers

Krishna Murari 7 years, 2 months ago

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Hemant Rathod 7 years, 2 months ago

Mass = kg

1Thank You

Sajid Ali 7 years, 2 months ago

Kia yr joke kar rahe ho kia?

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Pragati Gola 7 years, 2 months ago

1Thank You

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Define Thermodynamics in detail

Posted by Toshif Alam 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Vicky Kumar 7 years, 2 months ago

Thermodynamics is the branch of physics concerned with heat and temperature and their relation to energy and work. The behavior of these quantities is governed by the four laws of thermodynamics, irrespective of the composition or specific properties of the material or system in question.

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What is catylist

Posted by Riti Bansal 7 years, 2 months ago

CBSE > Class 11 > Chemistry

4 answers

Pragati Gola 7 years, 2 months ago

Catalyst provides lowest energy path for reaction by decreasing activation energy.

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Pragati Gola 7 years, 2 months ago

Those substances which increase the rate of reaction without taking part in it.

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Vicky Kumar 7 years, 2 months ago

Without being used in the reaction........!

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Tushar Pandey 7 years, 2 months ago

Those substance which alter the rate of a reaction are called catalysts.

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What is skotki defect and frankel defect?

Posted by Shreya Roy 7 years, 2 months ago

CBSE > Class 11 > Chemistry

2 answers

Vicky Kumar 7 years, 2 months ago

Frenkel is a type of defect in crystalline solids where in an atom is displaced from its lattice position to an interstitial site, creating a vacancy at the original site and an interstitial defect at the new location without any changes in chemical properties

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Vicky Kumar 7 years, 2 months ago

Schottky defect occurs when oppositely charged atoms (cation and anion) leave their corresponding lattice sites and create a pair of Vacancy Defects.

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Define ferimagnetism, feromegnatism and antiferomegnatism

Posted by Shreya Roy 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Vicky Kumar 7 years, 2 months ago

Ferro magnetic: the magnetic materials which show permanent magnetism even when the magnetic field is removed.They contain unpaired electrons in maximum number aligned in only ond direction .Ex: Ni Co Fe Anti ferromagnetic: in this magnetic moments of materials are aligned in such a wat that net magnetic moment becomes zero.Ex: MnO Ferrimagnetic:In this magnetic moments of the materials are aligned in parallel and anti parallel directions in unequal numbers.These materials loose their magnetism on heating and becomes paramagnetic.Ex:Fe3O4, ZnFe2O4,MgFe2O4

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