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

Nomenclature will be asked for only 2-3 marks ....in organic chemistry....u dont need to stress much into this ..just read ncert ...within beginning topics of all chapters of organic chemistry...u ll find the topic nomenclature ....u cn understand this very easily if u ve basic understanding of nomenclature from class 11. Its quite easy ...but once u read ..make sure to attempt ncert exercises based on questions of nomenclature...it will make ur concepts clear.

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Why h2s gas but h2o is liquid?

Posted by Raju Singh 8 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Aanshika Singh 8 years, 1 month ago

Because oxygen forms hydrogen bonding whereas sulphur do not

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Sneha Sheoran 8 years, 1 month ago

Because of the small size and high electronegativity of oxygen molecules of water are highly associated through hydrogen bonding resulting in its liquid state sulphur because of its larger size cannot form h-bonding and thus h2s remains as discrete gaseous molecule

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What is the structure of polymer monomers

Posted by Sangeeta Mahour 8 years, 1 month ago

CBSE > Class 12 > Chemistry

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Hey I feel problem in organic chemistry. I always forget conversion and distinguish between two compound in organic reaction. Please don't tell me that I should practice daily. Give me some other suggestions or idea.

Posted by Ashish Singh 8 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Pranav Rastogi 8 years, 1 month ago

Regular revision me alava air koi upay nahi

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Lekha Raj 8 years, 1 month ago

Shortcut mt dhundo ..........

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Lekha Raj 8 years, 1 month ago

Practice k alawa ar koi suggestion nhi h.............

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Resonance structure of no2

Posted by Vishal Vishal 8 years, 1 month ago

CBSE > Class 12 > Chemistry

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Tomorrow is my practical and my project on commercial cells.. Suggest me some questions on this

Posted by Aisha Grewal 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Aisha Grewal 8 years, 1 month ago

Plzzz

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Suggest a quantataive method for the estimitation of the gas which protect us from u-v rays coming from the sun.

Posted by Divyanshu Dubey 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Jyoti Bajaj 8 years, 1 month ago

When ozone reacts with an excess of KI solution bufferered with a borate buffer iodine is liberated which can be titrated against a standard solution of sodium thiosulphate .This is a quantitative method to estimate ozone gas

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Mcqs

Posted by Yogita Gajpal 8 years, 1 month ago

CBSE > Class 12 > Chemistry

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alcohols are acidic or neutral in nature ?

Posted by Nakshatra Upadhyay 8 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Aanshika Singh 8 years, 1 month ago

Neutral

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Ritu Gupta 8 years, 1 month ago

Alcohol are acidic

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Mansi Das 8 years, 1 month ago

Alcohol is a neutral compound

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All types of reactions

Posted by Rajan Sandhu 8 years, 1 month ago

CBSE > Class 12 > Chemistry

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Ortho nitrophenol has lower Boiling point than pnitrophenol.why....???

Posted by Saumya Kasaudhan 8 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Lekha Raj 8 years, 1 month ago

Boiling***

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Lekha Raj 8 years, 1 month ago

Ortho nitrophenol is an intra-molecular hydrogen bonded compound whereas p nitrophenol is an inter-molecular hydrogen bonded compound.(INTRA MOLECULAR HYDROGEN BONDING MEANS HYDROGEN BOND FORMATION TAKES PLACE IN THE SAME MOLECULE B/W TWO FUNCTIONAL GROUPS.AND,INTER MOLECULAR HYDROGEN BONDING TAKES PLACE B/W TWO MOLECULES.THAT MEANS P NITROPHENOL IS STRONGLY BONDED THAN O NITROPHENOL.) This simply implies that p nirophenol needs more heat /energy to overcome from this intermolecular hydrogen bonding than o nitrophenol.Hence o nitrophenol has lower boilin point.

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Sparsh Anand 8 years, 1 month ago

Due to less symmetry of o nitro phenol

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For a complex (coF6) 3-,write the hybridization type, magnetic character and spin nature of the complex...this is the que and I don't know how to solve it....

Posted by Priyanka Das 8 years, 1 month ago

CBSE > Class 12 > Chemistry

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Tell me some questions that are frequently asked in practicals viva of chemistry...

Posted by Rishika Sinha 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Saumya Kasaudhan 8 years, 1 month ago

Prepare if project topic...firstl

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Why ^ complexes are known for transition elements only

Posted by Shubh Gupta Shubh Gupta 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Tanvi Singh 8 years, 1 month ago

Due to presence of d orbitals

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Can u pls explain cross aldol condensation

Posted by Vrinda V 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Saumya Kasaudhan 8 years, 1 month ago

Aldol condensation is carried out b/w two d/f aldehyde and/ or ketones and if both them contain alpha hydrogen atoms of gives a mixture of four product.

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Name the major product obtained when tertiary butylbromide is heated with alcoholic KOH solution

Posted by S Hebbar 8 years, 1 month ago

CBSE > Class 12 > Chemistry