CBSE > Class 12 > Chemistry | CBSE Board | Homework Help

Also like forces are equal to unlike forces i.e. A-A interaction and B-B interaction is equal to A-B interaction. ∆S mix greater than 0 entropy change greater than 0

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Nidhi Bharti 4 years, 6 months ago

These are the solutions which follows Rault's law i.e. The total vapour pressure of solution formed by mixing the components is equals to sum of the partial vapour pressure of all components. And also the solution have the volume equal to the sum of the volumes of all components i.e ∆V=0, and energy also remain constant i.e ∆H= 0

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Even if the mass tritium is more than deuterium then why is it called heavy nucleus

Posted by Drishty Kamboj 4 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

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Convertion of benzene to aniline

Posted by Sakahi Sweta 4 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Nirupam Tyagi 4 years, 6 months ago

Benzene to aniline Reaction of HNO3 with benzene to form nitrobenzene. Reduce nitrobenzene to form aniline

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Sachin Gupta 4 years, 6 months ago

First nitration of benzene followed by reduction with Sn-HCl

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Addition polymer

Posted by Sachin Kumar Mahto 4 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Sachin Gupta 4 years, 6 months ago

Addition of monomers without loss of any small molecules..........

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Distinguish between hexagonal close packing and cubic close packing.

Posted by Neo Gopal Chettri 4 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Sanu ? 4 years, 6 months ago

Bhai ncert padh le dhang se samajh mai aa jayega ?? ???Best of luck ????

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Amritpal Sharma 4 years, 6 months ago

Hcp forms hexagonal symmetry while ccp also called fcc have cubic symmetry.

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What is the meaning of pharmacological effect

Posted by Kartik Sharma 4 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Shreya Singh 4 years, 5 months ago

Pharmacological effect may be defined as the physiological and/or biochemical changes in the body produced by a drug in therapeutic concentration.

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Neet main kuch reduce nhi hua kya??

Posted by Drishty Kamboj 4 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Nirupam Tyagi 4 years, 6 months ago

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Viva question

Posted by Ayush Jaiswal 4 years, 6 months ago

CBSE > Class 12 > Chemistry

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Posted by Arindita Dey 4 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Vivek Chaurasia 4 years, 6 months ago

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Niobium crystallizes in body centered cubic structure. If density is8.55g cm^-3, calculate atomic radius of niobium using its atomic mass 93 u

Posted by Sandesh Gajmer 4 years, 6 months ago

CBSE > Class 12 > Chemistry

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Calculate the equivalent conductivity of 1m h2so4 solution if specific conductance is 15×10^-2 ohm-¹ cm-¹.

Posted by Jass . 4 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Ishika Gurjar 4 years, 6 months ago

Calculate molar conductivity by using the formula Δm=k*1000/M And then divide molar conductivity by the valency factor of h2so4 Valency factor of h2so4 is 2 U will get ur answer

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Why bond angle in pH4+ is higher than that in PH3?

Posted by Sagar Hansda 4 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Sagar Hansda 4 years, 6 months ago

Thanks

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Manish Soni 4 years, 6 months ago

The bond pair lone pair repulsion in pH3 higher than PH4.

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What is the shape of co-ordination compounds in which C.N of central metal ion is 4

Posted by Pooja Wagh 4 years, 6 months ago

CBSE > Class 12 > Chemistry

4 answers

Diksha Garg 4 years, 6 months ago

Tetrahedral or trigonal planner geometry and shape tetrahedral

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Nitish Kumar 4 years, 6 months ago

Name to likho

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Vivek Chaurasia 4 years, 6 months ago

Aaga ? and ??

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Pooja Wagh 4 years, 6 months ago

And

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A solid on slight heating melts and not conducts heat and electricity.predict the type of solid.

Posted by Amrutha S Amrutha S 4 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Anitesh Sana 4 years, 6 months ago

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Ninisha Mandal 4 years, 6 months ago

Non polar molecular solid

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Crystalline solid

Posted by Shiva Yadav 4 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Ankur Yadav 4 years, 5 months ago

Solids in which constituent particals are arranged in a particular pattern in 3D space

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Standard electrode potential value di hogi exam mein?... Yaa yaad kerke jaani hai?

Posted by Riya Gandhi 4 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Ayush Juyal 4 years, 6 months ago

Yes given

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Will the standard electrode potential values be given in exam?

Posted by Riya Gandhi 4 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Drishty Kamboj 4 years, 6 months ago

Its not always given and the reaction is given instead ....so Ecathode -Eanode .....yeah now you should have to distinguish bw cathode and anode with the help of reaction

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Khushvendra Gautam 4 years, 6 months ago

it is given question I advice you to remember the sequence of series .

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Which reaction are reduced in d and f block elements

Posted by Hritik Yadav 4 years, 6 months ago

CBSE > Class 12 > Chemistry

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P block ke reduced syllabuses me "preparations and properties of halides and oxacids (elementary idea) " remove kiya h toh ye topic kaun sa h koi bta skta h ??? i am so confused about this topic? Kya ye topic h issh chapter me?

Posted by Gungun Gupta?? 4 years, 6 months ago

CBSE > Class 12 > Chemistry

5 answers

Drishty Kamboj 4 years, 6 months ago

Phosphorus wala whole topic remove ho chuka hai?

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Gungun Gupta?? 4 years, 6 months ago

Kya halogen group ko hi halides kehte h

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Suman Agrawal 4 years, 6 months ago

Mtlb isse b questions aa skte h

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Suman Agrawal 4 years, 6 months ago

Lekin iska sirf elementary idea hi remover hua h

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Suman Agrawal 4 years, 6 months ago

Han ye topic h

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Aniline to bromobenzene

Posted by Veerbhan Singh 4 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Hritik Yadav 4 years, 6 months ago

Aniline + hno2 =diazonium salt +cu2br2=bromobenzene

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Is it beneficial to study from examidea for chemistry

Posted by Gaurav Bagga 4 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Hritik Yadav 4 years, 6 months ago

Ncert is enough but you have to learn it by heart

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Vivek Chaurasia 4 years, 6 months ago

Yes ofcourse bhai.. You should solve PYQ..

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(a) Adsorption of a gas on surface of solid is generally accompanied by a decrease in entropy, still it is a spontaneous process. Explain. (b) Some substances can act both as colloids ’ and crystalloids. Explain. (c) What will be the charge on Agl colloidal particles when it is prepared by adding small amount of AgNO3 solution to KI solution in water ? What is responsible for the development of this charge ?

Posted by Diksha Hans 4 years, 6 months ago

CBSE > Class 12 > Chemistry

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Explain why the boiling points of isomeric haloalkanes decrease with increase in branching.

Posted by Chandan Yadav 4 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Hritik Yadav 4 years, 6 months ago

Because number of branches increase due to which surface area decrease as a result van der wall's forces also becomes weaker and hence boiling point decreases.

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Gaurav Bagga 4 years, 6 months ago

Because the extent of hydrogen bonding decreases because of which boiling point decreases

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Ambident nucleophiles explain with example

Posted by Meenu Garg 4 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

Saloni Kaushik 4 years, 6 months ago

A ligand which has more than one donor but can use only one at a time FOR example -CN (Cyano)C can donate -NC (Isocyano)N can donate

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Ankit Gautam 4 years, 6 months ago

The molecules or nucleophiles which has two attacking sites are called ambident nucleophiles. Ex CN, NO2 etc.

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Shweta? Dhama? 4 years, 6 months ago

The nucleophile that can attack through two different site are called ambident nucleophile....for example..cyanide...it can attack through either C atom or N atom to form alkyl isocyanide or alkyl cyanide.....hope soo it helps u....

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Why ice floats over the surface of water

Posted by Monika Malviya 4 years, 6 months ago

CBSE > Class 12 > Chemistry