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

This is caused due to polarisation in covalent bond. The elctrons get sifted towards more electronegative atom. Thus it shows the characteristics of ionic bond.

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Arijt Singh 7 years, 5 months ago

I think that is moment

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Is anyone from utterpradesh

Posted by Thanks We 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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How many electrons are present in 1.6 g of methane?

Posted by Preet Siddhu 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Arijt Singh 7 years, 5 months ago

Use Avagrdro constant and the no. of electrons in one atom of methane

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Hloo

Posted by Harsh Jain 5 years, 9 months ago

CBSE > Class 11 > Chemistry

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What is the rest mass of photon?

Posted by Vishwajeet Maan 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Aditya Tiwari 7 years, 5 months ago

The rest mass of photon is zero

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An hourly consumption of oxygen by an astronout

Posted by Ashish Tiwari 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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What is canal rays

Posted by Bhumika Regar 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Arijt Singh 7 years, 5 months ago

Positively charge rays which originates from anode.

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S chand for chemistry is good

Posted by Ahil Gj 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Pratay Das 7 years, 5 months ago

Yes

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The no. Of nodes in p orbital

Posted by Nainil Shah 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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What is steam distillation

Posted by Pratik Dabhade 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Difference between amorphous and crystalline

Posted by Gurnoor Randhawa 4 years, 7 months ago

CBSE > Class 11 > Chemistry

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Sia ? 4 years, 7 months ago

Crystalline Solids	Amorphous Solids
Crystalline solids possess a definite and regular geometry and consist of both long-range as well as short-range order of its constituent particles.	The particles of the constituents in the amorphous solids are arranged irregularly. They do not possess any kind of definite geometry and have a shorter range order.
Crystalline solids tend to have high and distinct melting points.	Amorphous solids do not have sharp melting points.
The external forms of the crystals tend to have regularity when they are formed.	Amorphous solids do not have an external regularity when they are formed.
Crystals tend to give a clean surface when they are cut with a knife.	The amorphous solids usually exhibit irregular cut-edges.
They possess a definite heat of fusion.	Amorphous solids do not have any specific heat of fusion.
The mild distorting forces cannot deform the crystalline solids since they are very rigid in nature.	Amorphous solids, on the other hand, do not possess any rigidity. The deformation could be achieved even by bending or compressing them.
Crystalline solids are known to be the true solids.	Amorphous solids are known to be supercooled liquids or pseudo solids.
Crystalline solids tend to show anisotropism.	Amorphous solids tend to show isotropism.

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A ball hit by a hockey stick does not appear to be moving in the form of Wave. Why?

Posted by Jashin Khan 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Arijt Singh 7 years, 5 months ago

Its de brogile wavelength is very small and cannot be detected.

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Ayush Kumar Singh 7 years, 5 months ago

due to its bigger size

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The reaction 2c+o2 --- 2co is carried out by taking 24g of c and 96g of o2. A) which is left in access B) how many gram of other reactant should be taken so that nothing is left in access.

Posted by Vikas Kumar 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Arijt Singh 7 years, 5 months ago

Oxygen . take 32 grams of oxygen.

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In the reduction of dichromate byFe(II), the no. of electrons involved per chromium atom is????????

Posted by Khushi Singh 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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The oxidation state of tungsten inNa2 W4 O13 .10H2O is

Posted by Khushi Singh 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Anjali Anjali 5 years ago

the oxi

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What is Homogeneous mixture

Posted by Rahul Pramanik 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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. . 7 years, 5 months ago

Which is same throughout and can't be differentiated by our naked eyes

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Ritu Thapliyal 7 years, 5 months ago

In homogeneous mixture the components r uniformaly distributed throughout the mixture

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What is proper meaning of cocentration stress of product and recatant ?

Posted by Dhara Rupavatiya 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Second electron gain enthalpy of oxygen is less - ve, more - ve or +ve then first electron gain enthalpy. Explain.

Posted by Sanjay Meena 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Anmol Sandhu 7 years, 5 months ago

Whe an electron is added to o negtive ion to firm o2 negative ion energy has to be given out in order to overcome the strong electronic repulsion between o negative and electron.thus the second electron gain enthalpy of o is positive

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How to get answer of previous years question given in this app

Posted by Ankit Singh 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Reference book for chemistry best

Posted by Ahil Gj 7 years, 5 months ago

CBSE > Class 11 > Chemistry

2 answers

Tapan Pandey 7 years, 5 months ago

Modern abc is the best book for chemistry

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Aryan Jha 7 years, 5 months ago

Pradeep for understanding concepts and Together with for questions practice

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Why do the atoms/molecules ungergoes hybridisation?

Posted by Arijt Singh 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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2molar solution has density 2g/ml calculate in terms of mole fraction.

Posted by Rohan Pant 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Arijt Singh 7 years, 5 months ago

2molar means 2 mole of solute in 1litre of solution(usually solvent is water) . Since the value of solute is negligible in 1 litre of water. Now density of solution is 2g/ml. So the mass of solution in 1 litre is equal to 2000g . the molar mass of water is 18g/mol. So no. of moles of solution is equal to 2000/18 . So find the mole fraction using this information.

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How many seconds are there in 2 days?

Posted by Vinay Panwar 7 years, 5 months ago

CBSE > Class 11 > Chemistry