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

you can use CrO3+H2SO4(Jones reagent) or KMnO4 to convert alcohol 𝗗𝗶𝗿𝗲𝗰𝘁𝗹𝘆 to acid ....but 𝗼𝗻𝗹𝘆 CrO3..will convert alcohol to aldehyde which requires further oxidation....to acid..

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If we want concentration greater than 10%of ozone then how we estimate it easily??

Posted by Shreya Jha 7 hours ago

CBSE > Class 12 > Chemistry

3 answers

Shruti Jha 6 hours ago

Anytime!

2Thank You

Shreya Jha 6 hours ago

Thanxx

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Shruti Jha 6 hours ago

By storing it in silica gel as it functions as an Adsorbent.

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ANSWER

Generally iupac naming also comes in organic chemistry or not?

Posted by Saleem Yadav 10 hours ago

CBSE > Class 12 > Chemistry

2 answers

Vineet Soni 8 hours ago

Yaa

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Shruti Jha 10 hours ago

Yes. It can.

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ANSWER

Sulphur shows greater catination than oxygen.How?

Posted by Shreya Jha 10 hours ago

CBSE > Class 12 > Chemistry

10 answers

Arjun Kumar Yadav 2 hours ago

Because sulphur is polyatomic or oxygen is diatomic

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Shreya Jha 8 hours ago

Yupp! Vaishnavi thank u 😃

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Vaishnavi Tayal 8 hours ago

Hey shreya i got what u said.actually i typed a little wrong.the o-o bond at room temp is weeker than sulphur.plzz do correct this in your mind. Secondly u mentioned lone pair ...basically this bond is weeker just because of lone pair on oxygen which causes repulsions and makes its bond dissociation enthalpy less than that of sulphur...and hence does not show catenation... Hope this clears your doubt...

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Shreya Jha 8 hours ago

Thank u so much .Ur reply releaved me. About my text😊 thanks again shruti🤗

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Shruti Jha 9 hours ago

Ooops! Sorry, Shreya i didn't saw your text. Btw what you said about oxygen is absolutely correct but in some cases we go for more appropriate answers !

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Shreya Jha 9 hours ago

I am asking is what i have texted abt lone pair is correct or not. I am not asking abt.sulphur i am asking abt oxygen..hope u understand

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Shruti Jha 9 hours ago

Sulphur shows greater catination cuz' it has vacant d orbit and bond between S-S at room temperature is much weaker leads to formation of catination.

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Shreya Jha 9 hours ago

What u said i got ur point. But isn't it about lone pair presence on oxygen due to which repulsion occurs.If not then why ..pplz help me out this

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Vaishnavi Tayal 10 hours ago

Oxygen due to its small size,highest electronegativity and absence of vacant d orbital do not form catenated chain of oxocompounds.but sulphur has vacant d orbital.moreover s-s bond at room tp is weeker so exist as catnated compounds.

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Rameez Khan 10 hours ago

Because of increasing bond enthalpy😁😄😄

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Cl2 + f2(excess) - ?

Posted by Kirti Kasaudhan 12 hours ago

CBSE > Class 12 > Chemistry

1 answers

Tamanna Sharma 11 hours ago

ClF3 is formed

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ANSWER

Haloalkins and halo areans in the full chapter note

Posted by liya****@***** 12 hours ago

CBSE > Class 12 > Chemistry

1 answers

Gaihem Kamei 12 hours ago

See chemistry chapter 10..revise the textbook?

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Halohalkins and halo areans

Posted by liya****@***** 12 hours ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

M kitna score kar sakti hu agar m sirf previous 10 years questions kar lu (without doing extra ncert questions ) In CHEMISTRY for 2020 PLEASE TELL ME

Posted by Chhavi Sharma 12 hours ago

CBSE > Class 12 > Chemistry

3 answers

Tamanna Sharma 12 hours ago

Kinetics se o and 1st order rxn., solution se raoult's law and Henry's law, azeotropes and many more given in NCERT

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Rudra Gupta 12 hours ago

Graph kis cheej ka

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Tamanna Sharma 12 hours ago

40+ agar NCERT graph aur add kar lo to

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Kon kon sa subject ho gya sabka....

Posted by Shalini Singh 14 hours ago

CBSE > Class 12 > Chemistry

4 answers

Vivek Thakur 13 hours ago

How would you clear physics

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Mayank Zode 13 hours ago

Abe lodu

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Tamanna Sharma 13 hours ago

Maths complete, physics almost ,chemistry( p,d,f block left)

4Thank You

Anuj Maurya 14 hours ago

Sab ho gaya😂😂😂

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IUPAC nomenclature

Posted by Mahima Gupta 15 hours ago

CBSE > Class 12 > Chemistry

2 answers

Tamanna Sharma 15 hours ago

Hope this suggestion will help you

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Tamanna Sharma 15 hours ago

What you want to ask because in 12th its only important for amines , coordination and some easy naming for ethers, so for organic please focused on name reaction conversion and reasoning a

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Examples and solutions of iupac nomenclature

Posted by Mahima Gupta 15 hours ago

CBSE > Class 12 > Chemistry

1 answers

Tamanna Sharma 15 hours ago

Important only given in NCERT

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PCl4+ and PCl4- ,,which one is not exists and why .

Posted by Tamanna Sharma 16 hours ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Give reason: both O2 and F2 stablize high oxidation states but the ability of O to stabilize the higher oxidation state exceeds that of F.

Posted by Tamanna Sharma 16 hours ago

CBSE > Class 12 > Chemistry

2 answers

Riya Rana 15 hours ago

Oxygen forms multiple bonds.

2Thank You

Gaurav Seth 15 hours ago

O₂ and F₂ both stabilise high oxidation states with metal but the tendency is greater in oxygen than fluorine. It is because O₂ bears -2 charges for each oxygen atom while F₂ bears only -1 for each atom thus the force of attraction between the metal atom and O^2-ion is greater than the force between the same metal atom and F^- ion. Thus, oxygen has the ability to form multiple bonds with transition element whereas fluorine does not have the ability to form multiple bonds with transition elements. Hence, O₂ gets the higher state of metals.

3Thank You

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I^+ (aq) + H2O (l) + O3 (g) ~ ????

Posted by Tamanna Sharma 16 hours ago

CBSE > Class 12 > Chemistry

1 answers

Riya Rana 15 hours ago

I2 + H+ + O2 {this is quantitative analysis of ozone}

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P4 (s) + NaOH (aq) + H2O (l) ~ ?..

Posted by Tamanna Sharma 16 hours ago

CBSE > Class 12 > Chemistry

1 answers

Riya Rana 15 hours ago

I think this is a reaction from group 15 and it aint in our syllabus anymore..

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ANSWER

Give reason ,H3PO2 behaves as monoprotic acid.

Posted by Tamanna Sharma 16 hours ago

CBSE > Class 12 > Chemistry

2 answers

Muskaan Vig 15 hours ago

This group is not in our syllabus frnd...

2Thank You

Rajat Barwar 16 hours ago

Because the H attached with O only contribute to acidity....in this only one H is attached with O and one with P...Hope this may help u....

3Thank You

ANSWER

Why PbO2 is stronger oxidizing agent than SnO2?

Posted by Tamanna Sharma 16 hours ago

CBSE > Class 12 > Chemistry

1 answers

Rajat Barwar 16 hours ago

Because the inert pair effect increases down the group....hope this may help u...

2Thank You

ANSWER

Why H3PO2 acts as monobasic acid?

Posted by Tamanna Sharma 16 hours ago

CBSE > Class 12 > Chemistry

1 answers

Riya Rana 15 hours ago

Presence of one -OH group

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What is the structural difference between orthosilicates and pyrosilicates?

Posted by Tamanna Sharma 16 hours ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Arre plz mhuje English me important chapters bata do

Posted by Saleem Yadav 18 hours ago

CBSE > Class 12 > Chemistry

1 answers

Pooja Kumari 13 hours ago

Ap utube se help lelo summary dekh ke bs

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ANSWER

Structure of BrF3

Posted by Mansi Garg 21 hours ago

CBSE > Class 12 > Chemistry

1 answers

Riya Rana 19 hours ago

Bent T shaped due to the presence of lone pair e-

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ANSWER

Why secondary and tertiary amine does not react with carbylamine test?

Posted by Dhinesh Babbu 23 hours ago

CBSE > Class 12 > Chemistry

2 answers

Riya Rana 19 hours ago

Not cyanide but isocyanide

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Vaishnavi Kalvakuntla 22 hours ago

Formation of cyanide is difficult

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ANSWER

what are the common b/w Henry and Roult law

Posted by Amit Kushwaha 1 day, 2 hours ago

CBSE > Class 12 > Chemistry

2 answers

Riya Rana 19 hours ago

Raults law is considered as a special case of henrys law bcoz in both partial pressure depends on mole fraction.

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Vaishnavi Tayal 1 day, 2 hours ago

Both gives the relation between mole fraction of any component in a solution and partial pressure of solutions

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ANSWER

In chemistry which have more wieghtage organic or inorganic

Posted by Falguni Soni 1 day, 3 hours ago

CBSE > Class 12 > Chemistry

5 answers

Alok Raj 19 hours ago

Offcourse organic bro

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Shruti Jha 23 hours ago

Do what you feel is convenient for you!

1Thank You

Falguni Soni 23 hours ago

Then should i do organic first ???

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Amit Kushwaha 1 day, 2 hours ago

Organic 28 marks

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Vaishnavi Tayal 1 day, 3 hours ago

Organic is of 25 marks

1Thank You

ANSWER

What all topics are removed from polymers ....and what to study in this chapter....answer please

Posted by Priya Sharma 1 day, 5 hours ago

CBSE > Class 12 > Chemistry

1 answers

Riya Rana 19 hours ago

There are two important tables about the monomers.. mug them up ! Plus do biodegradable polymers examples...

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Colloid in not a substance but a state of substance. Comment.

Posted by Shruti Jha 1 day, 8 hours ago

CBSE > Class 12 > Chemistry

3 answers

Shruti Jha 1 day, 8 hours ago

Thank you!

1Thank You

Vaishnavi Tayal 1 day, 8 hours ago

Ignore the typing error..😅

1Thank You

Vaishnavi Tayal 1 day, 8 hours ago

Colloid is a state where a sute is parially soluble in rhe solvent.neither it become transparent nor is becomes opaque.no such as unvstance named colloid is known

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Why medicines are more effective in colloidal state??

Posted by Vaishnavi Tayal 1 day, 9 hours ago

CBSE > Class 12 > Chemistry