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

They are soft metal because d-orbital of these metals are completely filled so they have not unpaired electrons who overlap to form strong metallic bond that's why they are soft metal

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(CH3)3c-cho does not undergo aldol condensation.

Posted by Manish Singh 8 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Sweety Yadav 8 years, 3 months ago

Sorry as no alphahydrogen present

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Sweety Yadav 8 years, 3 months ago

As no alpha-tocopherol present

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Define ore

Posted by Pankaj Yadav 8 years, 3 months ago

CBSE > Class 12 > Chemistry

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what do you mean by in nitrogen all oxidation states from +1 to +4 tends to disproportionate in acid solution ?

Posted by Anjali Tamboli 8 years, 3 months ago

CBSE > Class 12 > Chemistry

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what are allotrops ? why nitogen does not show allotropy but all other members of its group shows ?

Posted by Anjali Tamboli 8 years, 3 months ago

CBSE > Class 12 > Chemistry

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What is molecularity

Posted by Deeksha Chaudhari 8 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Priyanka Shinde 8 years, 3 months ago

The no of atoms, ions or molecules that must collide with one another simultaneously so as to result into chemical reaction is called molecularity

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Structure of phenol

Posted by Vineet Kumar 8 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Aarzo Sharma 8 years, 3 months ago

Benzene ring ki 1st position per OH group

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If there is both ortho-paraand meta directing group present on same benzene ring and it react with chlorine in presence of FeCl3 then at which position Cl will come ?

Posted by Abhishek Upadhyay 8 years, 3 months ago

CBSE > Class 12 > Chemistry

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NH3 has higher dipole moment Than NF3...why??? Though flourine is much more electronegative than hydrogen..

Posted by Tanmay Dixit Dixit 8 years, 3 months ago

CBSE > Class 12 > Chemistry

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Why helium is used in appartus

Posted by Sweety Yadav 8 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Tanuj Chauhan 8 years, 3 months ago

It is of light weight and non inflamble and low boiling point

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Bio molecules

Posted by Shikhar Pandey 8 years, 3 months ago

CBSE > Class 12 > Chemistry

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Iupac

Posted by Shikhar Pandey 8 years, 3 months ago

CBSE > Class 12 > Chemistry

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How should I prepare chem.

Posted by Dhruv Gupta 8 years, 3 months ago

CBSE > Class 12 > Chemistry

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Reaction involving in alcohols

Posted by Anjali Rawat 8 years, 3 months ago

CBSE > Class 12 > Chemistry

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Why cumene is best starting agent for preparation of phenol

Posted by Tanuj Chauhan 8 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Sweety Yadav 8 years, 3 months ago

As side product is acetone

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Silicon is doped with boron which type semiconductor is this ?

Posted by Mayur Malhotra 8 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Dhruv Gupta 8 years, 3 months ago

P type

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Gurpreet Saini 8 years, 3 months ago

P type semiconductor

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What is the meaning of crucial

Posted by Bhupender Bhupi 8 years, 3 months ago

CBSE > Class 12 > Chemistry

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What ia adverb

Posted by Prashant Kumar Rana 8 years, 3 months ago

CBSE > Class 12 > Chemistry

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Why kmno4 act as oxidising agent with h2so4 , but not with hno3 and hcl

Posted by Mahi Nehra 8 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Shambhu Kumar 8 years, 3 months ago

Because hn O3 is itself or strong oxidising agent and HCL is in HCL chlorine ion is oxidised by kmn o4 so kmn o4 act as oxidising agent with with H2 s o4.

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