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

It is ammonium silver nitrate solution Ag(NH3)2. On warming with aldehyde a bright silver mirror is producee due to formation of silver metal..ketones do not give this test

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Will assertion reasoning come in the xm?

Posted by Binayak Das 5 years, 11 months ago

CBSE > Class 12 > Chemistry

8 answers

Gurpreet Singh 5 years, 11 months ago

Yes definitely

1Thank You

Tushar Kumar 5 years, 11 months ago

Yed

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Manish Bisht 5 years, 11 months ago

Yes 100%

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Harsh Dalal 5 years, 11 months ago

Yes

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Amol Gùpta 5 years, 11 months ago

If we go through the sample paper released by cbse then we can say A R will come in xam

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Rishabh Gupta 5 years, 11 months ago

50% chance

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Rishabh Gupta 5 years, 11 months ago

Not confirm

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Mannat Kaur Khalsa? 5 years, 11 months ago

Yes

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ANSWER

Difference between strong and weak electrolyte

Posted by Gopal Das 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Sanjeet Kumar Pal 5 years, 11 months ago

Strong electrolyte is one which is almost completely ionised in aqueous solution. While weak electrolyte ionise very less or feebly ionise in aqueous solution.

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ANSWER

Please help me to choose which sample paper is best for subjects of PCM

Posted by Abhay Mishra 5 years, 11 months ago

CBSE > Class 12 > Chemistry

6 answers

Saksham Deep 5 years, 11 months ago

Arihant chapterwise sample paper will be a good option acc. to me?

1Thank You

Sneha Bansal 5 years, 11 months ago

Sure ?

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Sneha Bansal 5 years, 11 months ago

Arihant for sue

2Thank You

Abhay Mishra 5 years, 11 months ago

And about together with sample paper ,, ??

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Gopal Mishra 5 years, 11 months ago

And you also buy. Mycbse guide sample paper

1Thank You

Gopal Mishra 5 years, 11 months ago

I think. Oswal sample papaer is best as view of cbse

1Thank You

ANSWER

How should i prepare for chemistry board exam ....( strategy. )

Posted by Joshi Joshi 5 years, 11 months ago

CBSE > Class 12 > Chemistry

3 answers

Shivani Thakur 5 years, 11 months ago

Noooo...yr ni ?..chem.ko interest k sath pdo..ek yhi h.....in which v could expect 100 out of 100??

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Mannat Kaur Khalsa? 5 years, 11 months ago

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Saksham Deep 5 years, 11 months ago

Ratta maar? I am also frustated?

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ANSWER

P block and f block subject i cant understand.. why??

Posted by Mayur Kanyal 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Mayur Kanyal 5 years, 11 months ago

Chapter*

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How can I read chemical kinetic chapter according to examinations veiwe. Because I'm having bio subject and not getting numerical properly.

Posted by Heena Gehlot 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Mannat Kaur Khalsa? 5 years, 11 months ago

Kinetics chapter is very easy.....understand its concept...and try.ncert first...☺

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ANSWER

What is electro chemistry?

Posted by Saloni Saloni 5 years, 11 months ago

CBSE > Class 12 > Chemistry

2 answers

Sanjeet Kumar Pal 5 years, 11 months ago

The branch of Chemistry in which we study how spontaneous chemical reactions in cell can be converted to electricity(Electrochemical Cell) and how electricity is used to bring about chemical reaction in the cell (Electrolytic Cell).

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Gopal Mishra 5 years, 11 months ago

Study of electron

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calculate the mass percentage of benzene (C6H6)and carbon tetrachloride (CCl4) if 22g of benzene is dissolved in 122g of carbon tetrachloride

Posted by Raj Keshari 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Rahul Tiwari 5 years, 11 months ago

22/122×100 now you can calculate

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What are the probable type of questions from the chapter polymers? Are the reactions important?

Posted by Kalpana Jha 5 years, 11 months ago

CBSE > Class 12 > Chemistry

3 answers

Keshav Kumar 5 years, 11 months ago

in polymers monomers and the reaction of polymerisation is important n it also consists of some reasoning questions like significance of 6,6 and etc...

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Kalpana Jha 5 years, 11 months ago

Type of ques*

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Vaibhav Arora 5 years, 11 months ago

How can i tell u whole polymers imp ques here

2Thank You

ANSWER

IS THE PREVIOUS YEAR CBSE PAPER SAMPLE ACCURATE ?

Posted by Soumya Kattimani 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Vaibhav Arora 5 years, 11 months ago

Yes

0Thank You

ANSWER

What is the difference between Henry's Law and Raoult's law?

Posted by Garima Sanskriti 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 5 years, 11 months ago

Henry's law is valid for ideal gases and raoult's law is for solutions.
Partial pressure of a particular gas in a mixture of non reacting gases is the pressure that the given gas would exert if it is allowed to occupy the entire space of the container in which the mixture has been placed.

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Mera chem bhot week hai. Meri help kro. Mujhe 50/70 toh laana hi hai

Posted by Gamerz Rule 5 years, 11 months ago

CBSE > Class 12 > Chemistry

3 answers

Sambhav Jain 5 years, 11 months ago

Again do revise and revise And Focus only on NCERT book

0Thank You

Vishal Singh 5 years, 11 months ago

Do all ncert questions sincerely more than enough

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Shubi Verma 5 years, 11 months ago

Phle to jo u tube p pranav panday n name reactions part h vo dekho or prepare krobthen vedantu one shot video dekh lo.. Prepare ho jayega ques sirf ncert book se hi puche jayenge jo book m h or part 2m to digit bhi nhi change hoti h wahi ques sidhe a jata h

4Thank You

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In 12th class chemistry is tuff

Posted by Mohit Gurjar 5 years, 11 months ago

CBSE > Class 12 > Chemistry

4 answers

Saksham Deep 5 years, 11 months ago

Acc. To me a well planned strategy can make chemistry easy to be understood...it's seems boring but we have to score marks so have to recite again and again... So, RATTA MAAR!!

0Thank You

Sambhav Jain 5 years, 11 months ago

Its not tough but it is very much revising thats why we think it is tough

0Thank You

Anuj Maurya 5 years, 11 months ago

No not at all...

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Mannat Kaur Khalsa? 5 years, 11 months ago

Naaaa

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Aniline has less basic character than alliphatic amine

Posted by Sonu Rao 5 years, 11 months ago

CBSE > Class 12 > Chemistry

2 answers

Rajat Barwar 5 years, 11 months ago

Yes, because basic strength depend on the lone pair donating capacity of the base.. Since the lp of aniline is involved in resonance with bezene ring it is less available for donation,while in aliphatic amine this is not the case. Hope it may help you..

2Thank You

Yogita Ingle 5 years, 11 months ago

The strength of a base is determined by its ability to donate the lone pair of electrons. In case of aniline (which is an aromatic amine), the lone pair of electrons on nitrogen is in resonance with the benzene ring. Hence it is not readily available for donation to an electron deficient species. This makes aromatic amines weak bases.

On the other hand, in alkyl amines, there is no such resonance. In fact, the alkyl groups are electron releasing groups which increase the electron density on nitrogen. Thus the electron pair on nitrogen can be donated very easily, because of which they are better electron donors and hence better bases than aromatic amines.

2Thank You

ANSWER

Neet ki practice kesi chal rahi hai.

Posted by Kriti Sharma 5 years, 11 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

How many of you like organic chemistry.

Posted by Kriti Sharma 5 years, 11 months ago

CBSE > Class 12 > Chemistry

8 answers

Shivani Thakur 5 years, 11 months ago

Ysssd...i love ❤????????????it...nd i thnk more than anything ???

0Thank You

Saksham Deep 5 years, 11 months ago

I don't love that...but ya if u get closer to the reactions u will find them very friendly...and we have to score good marks in our board so have to do so... I'm also doing....but some times it's very irritating?

1Thank You

Sambhav Jain 5 years, 11 months ago

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Sohan .G 5 years, 11 months ago

Count me in

1Thank You

Jd Chouhan 5 years, 11 months ago

1Thank You

Its All About 5 years, 11 months ago

1Thank You

Vikash Kumar 5 years, 11 months ago

I'm

1Thank You

Vikash Kumar 5 years, 11 months ago

Yes

1Thank You

ANSWER

The yield in Sandmeyer reaction is found to be better than Gatterman reaction. Why?

Posted by Jerin Joy 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 5 years, 11 months ago

The yield in Sandmeyer reaction is found to be better than Gattermann reaction.Gattermann reaction is a variation of Sandmeyer reaction which the CuCl is replaced by Cu powder. This replacement leads to formation of aryl halide more easily and under mild conditions than Sandmeyer reaction although the yield is reduced

1Thank You

ANSWER

what is analgesic and anaesthetic

Posted by Prashant Patel 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Kriti Sharma 5 years, 11 months ago

Analgesic are the drugs which lowers down body temperature e.g paracetamol. Whereas anaesthetics provide temporary loss of sensation of the body part which is paining

1Thank You

ANSWER

Difference between 2-bromopropene and 1-bromopropane

Posted by Nisha Mehta 5 years, 11 months ago

CBSE > Class 12 > Chemistry

2 answers

Its All About 5 years, 11 months ago

Br I CH2=C - CH3 ............... CH3-CH2-CH2 I Br

0Thank You

Harshit Kotecha 5 years, 11 months ago

2 Bromoprop-ene Means There Is A Double Bond While In 1 Bromoprap-ane There Is No Double Or Triple Bond , Only Single Bonded Carbon Chain.

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What is meant by bassemerisation ? Write the equation for reaction

Posted by Nandini Sharma 5 years, 11 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Why h2o exist as water but so 2 not

Posted by Uday Jain 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Atharva Tripathi 5 years, 11 months ago

This is due to h2o has intramolecular hydrogen bonding which keep the water liquid but so2 do not have any this type of bond so it is in gas form

2Thank You

ANSWER

Although phenoxide ion has more number of resonationg structures than carboxylate acid is a stronger acid than phenol. Why?

Posted by Kapil Chauhan 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Anupam Sharma 5 years, 11 months ago

The conjugate base of carboxylate is more stable than conjugate base of phenoxide ion. Hence carboxylay acid is stronger than phenol

4Thank You

ANSWER

H2o is liquid but H2s gas why

Posted by Saloni Saloni 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Anupam Sharma 5 years, 11 months ago

This is due to anamolous behaviour of oxygen Due to small size and high electronegativity of oxygen Also oxygen shows hydrogen bonding Due to all these reasons H↓2S is gas where as H↓2O is liquid

2Thank You

ANSWER

how was your jee exam?

Posted by Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

CBSE > Class 12 > Chemistry

23 answers

Ďãřşháñăã Yadav ? ? ? 5 years, 11 months ago

kbhi toh accha bol mere liye nalayak. ????

3Thank You

Amol Gùpta 5 years, 11 months ago

Paper tod tha mtlb accha hi hua faltu me fek rha tha ????

1Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

? ? haasi aa ri hai tujhe.. I'll pray 2may ko bhi barrish ho Delhi mein... jub tu neet ka exam dene Jaye ??

1Thank You

Ďãřşháñăã Yadav ? ? ? 5 years, 11 months ago

bahut acche. ? ? ? ?

3Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

yrr mt puch... ghr se nikla barrish... centre se nikla barrish. ??? paper toh tod tha. ??

2Thank You

Ďãřşháñăã Yadav ? ? ? 5 years, 11 months ago

oye sunn exam kesa gya.? #barrish mein ????

2Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

Maine apko nhi bola Maine rishabh ko bola hai.

1Thank You

Mannat Kaur Khalsa? 5 years, 11 months ago

Kyu hmm konsi category ke lgte hai apko?

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Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

? ? ? bahut khub... meri category ke bnde mill rahe hai mujhe.

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Mannat Kaur Khalsa? 5 years, 11 months ago

Theek tha...paper too..

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Mannat Kaur Khalsa? 5 years, 11 months ago

Tum sb ka exam acha ni hua ky?

0Thank You

Rishabh Gupta 5 years, 11 months ago

Bhai mere sath bhi majak hi hua hai,??????

1Thank You

Amol Gùpta 5 years, 11 months ago

Very funny ?? ? Wlcm

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Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

blood grp (-) ve hai... how can I think positive. ? ? ? BTW shukriya bhena. ???

1Thank You

Amol Gùpta 5 years, 11 months ago

Accha hi hua hoga think positive

1Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

physics tod aayi thi ???

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Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

dekho mai zyda Hoshiyaari jhaad kr ni aaya mere dosto ne advice di not to be so excited ... usi ko follow kiya Jo aata tha infact I should say Jo answer mera correct aaya solve krne pr bus utna he kiya... ? ?

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Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

kaisa hua ye nhi pta bus majak hua hai mere saath. ????

1Thank You

Mannat Kaur Khalsa? 5 years, 11 months ago

Kaisa hua rohan...easy tha na

1Thank You

Amol Gùpta 5 years, 11 months ago

Kch na krne waale bohot kch kr jaate h bhai

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Amol Gùpta 5 years, 11 months ago

Are you serious but I don't think so

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Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

? ? ? pta nhi kya kr ke aaya hoon. ???

2Thank You

Amol Gùpta 5 years, 11 months ago

Tum btao tumhara kaisa hua

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ANSWER

A solution of an organic compound is prepared by dissolving 34.2

Posted by Shubh Whatsapp Status 5 years, 11 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is lanthanoid and actonoid contradiction

Posted by Vaibhav Saini 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 5 years, 11 months ago

In lanthanides there is a gradual increase in atomic size, atomic radii and ionic radii with increase in atomic number. This regular decrease is known as lanthanide contraction.
Causes:In lanthanides, the nuclear charge increases by one unit at each successive element and this new electron enters the 4f-subshell. Due to the peculiar shapes of f-orbitals, there is imperfect shielding of electrons from the nuclear attraction. As a result of this the size of lanthanide atoms decreases.
In actinoid there is a gradual increase in atomic size, atomic radii and ionic radii with increase in atomic number. This regular decrease is known as actinoid contraction. Causes:In actinoid, the nuclear charge increases by one unit at each successive element and this new electron enters the 5f-subshell. Due to the peculiar shapes of f-orbitals, there is imperfect shielding of electrons from the nuclear attraction. As a result of this the size of actinoids atoms decreases.

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ANSWER

How can change carbon through KCN to form alcohol (CH3-CH3 to CH3-CH2-CH2-OH)

Posted by Vaibhav Saini 5 years, 11 months ago

CBSE > Class 12 > Chemistry