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

It is the phenomena of transfer of pie - electrons along a saturated hydrocarbon chain whenever an electron donating or withdrawing group is present at the end of the chain . It is of 2 types : 1. +( plus ) i - effect 2. - i ( minus) - i effect

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Azmat Ali 7 years, 5 months ago

Class11

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Lowest boiling point

Posted by Chanlop Jugli 7 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Abhishek Kumar 7 years, 5 months ago

For which

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Why chemistry is important for us?

Posted by Shashank Nigam 7 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Ritik Tyagi 7 years, 5 months ago

Because the we the knowledge of all elements and their reaction . This reson we make the new medicine and develop the lifestyle with chemistry

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Why there is a depression in freezing point when solute is added.

Posted by Swati Dave 7 years, 5 months ago

CBSE > Class 12 > Chemistry

2 answers

Ritik Tyagi 7 years, 5 months ago

Because solvent particles are replaced by solute particle

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Gouri Dashore 7 years, 5 months ago

Because f.p of solution is lower then pure salvent their for depression in f.p.

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When does the average rate and instantenous rate of reaction become equal

Posted by Ajay Anthwal 7 years, 5 months ago

CBSE > Class 12 > Chemistry

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How to change propylbromide to propene

Posted by Gouri Dashore 7 years, 5 months ago

CBSE > Class 12 > Chemistry

2 answers

Gouri Dashore 7 years, 5 months ago

Thanks

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Pooja Sharma 7 years, 5 months ago

By reacting it with alcoholic KOH

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Finaal of formula

Posted by Arpit Sharma 7 years, 5 months ago

CBSE > Class 12 > Chemistry

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A single electron system has ionization energy 11180KJ/mol .Findthe no. of protons in the nucleus of system

Posted by Garima Lakhlan 7 years, 5 months ago

CBSE > Class 12 > Chemistry

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What makes a glass different from a solid such as quartz ?

Posted by H S 7 years, 5 months ago

CBSE > Class 12 > Chemistry

2 answers

Neha Bhardwaj 7 years, 5 months ago

Glass is an amorphous solid in which constituent particels have only a short range and there is no long range order. In quartz , the constituent particles have both short range as well as long range order .

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Sneha Singh 7 years, 5 months ago

It's amophus nature

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Sir i want to prepare for chemistry compartment of class 12 plzz any one guide me

Posted by Shameerulla Shaik 7 years, 5 months ago

CBSE > Class 12 > Chemistry

2 answers

Shameerulla Shaik 7 years, 5 months ago

Still mam

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Kriti Chhetri 7 years, 5 months ago

Do ncert thoroughly and practise last 2 to 3 yrs quest ppr stick to ncert only no othr books

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Full form of ZSM-5 is......

Posted by Pratik Kumar 7 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Preethi Bell 7 years, 5 months ago

Zeolite socony mobil -5...

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Define Zeolite.??

Posted by Pratik Kumar 7 years, 5 months ago

CBSE > Class 12 > Chemistry

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What is Rosemund' s reaction ??

Posted by Pratik Kumar 7 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Sneha Singh 7 years, 5 months ago

Compound of aluminosilicates For more cheak out ncert-12 chemistry part-1 (pg-130-131)

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I want to know about the nernst equation...

Posted by Manas Sharma 7 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Kusum Rani 7 years, 5 months ago

You have to see book for good understanding

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Write nernest equation and amf of following cell at 298 k; Pt(s)/Br2(l) | Br-(0.010M) ||H+(0.030M) |H2 (g) (0.9bar) | Pt(s). E0 Br2/Br-/Pt=1.09V. required for its 25% completion at 308 K. If the value of A is 4×1010s-1.Calculate k at 318K and Ea.

Posted by Amrit Ammy 7 years, 5 months ago

CBSE > Class 12 > Chemistry

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Schottky defect lowers the density of solid give reason

Posted by Heena Sagar 7 years, 5 months ago

CBSE > Class 12 > Chemistry

3 answers

Preethi Bell 7 years, 5 months ago

In schottky defect, equal no.of cations and anions are removed from the crystal lattice. As no.of ions are reduced in the crystal lattice, this results in decrease in no.of ions which in turn decreases density of solid.

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Pratik Kumar 7 years, 5 months ago

Becoz equal no.. of cations and anions are missing from their lattice sites.

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Riya Chaurasiya 7 years, 5 months ago

Because cation and anion are missing from their lattice site

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What is nernest equation

Posted by Rakesh Singh 7 years, 5 months ago

CBSE > Class 12 > Chemistry