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    • Posted by Anuj Pradhan 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Karutharaj Pandian 5 years, 11 months ago

    Alkyl group 2 moles attached with two moles of sodium

    0Thank You

    Manvee Garg 5 years, 11 months ago

    No

    0Thank You

    ANSWER

    • Posted by Hemant Patel 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Vinay Gautam 5 years, 11 months ago

    Yh HCHO

    0Thank You

    Karutharaj Pandian 5 years, 11 months ago

    HCHO

    0Thank You

    Anuj Pradhan 5 years, 11 months ago

    HCHO

    0Thank You

    ANSWER

    • Posted by Bishan Singh Bikka 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Karutharaj Pandian 5 years, 11 months ago

    . 05 N FAS with Kmno4 Normality will be. 0098 M

    0Thank You

    ANSWER

    • Posted by Anupam Sharma 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Pooja Malik 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 6 answers

    Gaming Zone 5 years, 11 months ago

    mainly, to complete the circuit.

    1Thank You

    Sakshi Singh 5 years, 11 months ago

    it prevents the accumulation of ions on electrodes

    0Thank You

    Karutharaj Pandian 5 years, 11 months ago

    Transfer of two ions

    0Thank You

    Nishu Sahu 5 years, 11 months ago

    To maintain electrical neutrality. To minimize liquid liquid junction potential.

    1Thank You

    Aditya Vinay 5 years, 11 months ago

    kala pik

    0Thank You

    Riya Rana 5 years, 11 months ago

    Flow of electrons And to maintain the charge balance between the two electrolytes

    0Thank You

    ANSWER

    • Posted by Tasnia Khatoon 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Ankita Khatri 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Karutharaj Pandian 5 years, 11 months ago

    R rotation means left side and s means right rotation

    1Thank You

    Adi Kumar 5 years, 11 months ago

    Optical isomers are mirror images that cannot be superimposed on one another.

    1Thank You

    ANSWER

    • Posted by Rikshesh D. 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 5 answers

    Vinay Gautam 5 years, 11 months ago

    Available in school ill get it on 12feb after the submission of fee of march and feb

    0Thank You

    Akanksha Verma 5 years, 11 months ago

    On 8 february may be

    0Thank You

    Utpal . 5 years, 11 months ago

    From 1 Feb

    1Thank You

    Ayush Pandey 5 years, 11 months ago

    MostPrivate school give in jan but government schools after 15 feb

    2Thank You

    Shivraj Singh Rathore 5 years, 11 months ago

    I think we will get our admit card in between 1-5 feb.

    1Thank You

    ANSWER

    • Posted by Sejal Uniyal 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Vinay Gautam 5 years, 11 months ago

    Yh u r right

    0Thank You

    Akanksha Verma 5 years, 11 months ago

    They ask more questions on organic chemistry and from one student examiner asked that how many chapters are there in your chemistry book

    1Thank You

    Sejal Uniyal 5 years, 11 months ago

    Thankyou anju

    1Thank You

    Anju Yadav 5 years, 11 months ago

    There is nothing to have fear of practical..... Only basic will be asked. And u will be able to answer,Have such confidence. And if u will not able to answer. Simply say sorry sir I don't know.

    1Thank You

    ANSWER

    • Posted by Madhvi Rana 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Vishal Singh 5 years, 11 months ago

    Black ppt is for in case of 2 group

    0Thank You

    Neha Choudhary 5 years, 11 months ago

    Ppt formed in case of 2 group basic radical ppt is black In case of 4 grop ppt is of dull white or puff colour

    1Thank You

    ANSWER

    • Posted by Amisha Nanda 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Neha Choudhary 5 years, 11 months ago

    Not in syllabus

    0Thank You

    Yogita Ingle 5 years, 11 months ago

    A nitrate test is a chemical test used to determine the presence of nitrate ion in solution.

    A nitrate test, known as the brown ring test can be performed by adding iron(II) sulfate to the solution, then slowly adding concentrated sulfuric acid and watching for a brown ring on the test tube, which will indicate the presence of the nitrate ion.


    The test follows several phases; these have been written as balanced chemical equations:

    1: 2 Zn(NO3)2 + 2 H2SO4 → 2 ZnSO4 + 4 HNO3

    4 FeSO4 + 2 H2SO4 → 2 Fe2(SO4 )3 + H2

    These two reactions happen simultaneously.

    2: 4 HNO3 → 2 H2O + 3O2 + 2 NO

    The Nitric Acid decomposes in the intense heat produced by the high concentrate Sulphuric Acid used.

    3: 2 Fe2(SO4)3 + 2 H2 + 4 NO → 4 Fe.NO.SO4 + 2 H2SO4

    The Fe.NO.SO4 forms a brown ring in the middle of the solution produced by the reaction, making it easy to identify the presence of nitrates in the water.

    1Thank You

    ANSWER

    • Posted by Rain Drop 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Jd Chouhan 5 years, 11 months ago

    Oxidising agent or reducing agent pr

    0Thank You

    Shivraj Singh Rathore 5 years, 11 months ago

    Of 3 marks and 2 marks or may be of one marks but not of 5 marks

    1Thank You

    Adi Kumar 5 years, 11 months ago

    May be a 5 mark questions

    1Thank You

    ANSWER

    • Posted by Ishita Modi 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Akanksha Verma 5 years, 11 months ago

    Ya mechanism is important

    0Thank You

    Adi Kumar 5 years, 11 months ago

    Only two or three important mechanisms are there

    2Thank You

    Lakshay Bhardwaj 5 years, 11 months ago

    Important

    1Thank You

    ANSWER

    • Posted by #Ruhi Singh 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Neha Choudhary 5 years, 11 months ago

    Ncert important h

    1Thank You

    ANSWER

    • Posted by Netra Chettri 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Adi Kumar 5 years, 11 months ago

    Than iodine

    0Thank You

    Adi Kumar 5 years, 11 months ago

    Fluorine is more electronegative than chlorine

    0Thank You

    ANSWER

    • Posted by Jyoti Suhag 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Riya Rana 5 years, 11 months ago

    Co is poisonous and decreases its yield

    0Thank You

    Neha Choudhary 5 years, 11 months ago

    Becoz CO decreae the production of NH3

    0Thank You

    ANSWER

    • Posted by Arshdeep Sekhon 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Vinay Gautam 5 years, 11 months ago

    Ya start it today dont lose ur hope u cn still score gud

    0Thank You

    Mohan Singh 5 years, 11 months ago

    ?????? ya she is right

    0Thank You

    Kriti Sharma 5 years, 11 months ago

    Dont worry ........preboards help you know your level and i think you have realised..... Listen set a target for you i mean know your potential that you will try to get 30+,,,,40+,,,,,50+ in your finals and practice accordingly ok...... Don't leave some important chapters such as optics,,, organic chemistry,,. Focus more on English and physical education..... As these are%tage enhancing subjects.....?

    6Thank You

    ANSWER

    • Posted by Prashant Patel 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Rajat Barwar 5 years, 11 months ago

    Assertion and reason both are correct ,but the statement 2 is not correct reason of 1.....

    1Thank You

    Samir Enstien 5 years, 11 months ago

    Oo bhai maaro mujhe maraao

    1Thank You

    ANSWER

    • Posted by Yashvi Bhardwaj 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Santosh Kumar 5 years, 11 months ago

    Ethene gives (HBr in presence) ethylbromide gives (Ag2O in presence) ether gives (H2O&H2SO4) Alcohol

    0Thank You

    Ã♥╣[-_-]╠♥J ??? 5 years, 11 months ago

    Three steps are involved in the mechanism of hydration of ethene to yield ethanol. $$(1)$$ The electrophillic attack of hydronium ion protonates ethene to form carbocation. $$(2)$$ Water (as a nucleophile) attacks carbocation. $$(3)$$ Deprotonation gives ethanol. But i cant show u images of the reactions because on this site image can't uploaded U can see it in the ncert book

    0Thank You

    ANSWER

    • Posted by Mahroo Naziri 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Ritss ?? 5 years, 11 months ago

    c. Ch4 + Cl2(excess) gives intermediate ChCl3

    0Thank You

    Ritss ?? 5 years, 11 months ago

    b. C2h5Nh2 in the presence of NaOh +HCl at 0°C gives C2h5Oh

    0Thank You

    ANSWER

    • Posted by ♥️Bhavika Naik?? 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Neha Choudhary 5 years, 11 months ago

    No

    0Thank You

    ANSWER

    • Posted by .. Chaudhari 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Riya Rana 5 years, 11 months ago

    Yess now there will be 20 questions which are one marker.

    0Thank You

    Neha Choudhary 5 years, 11 months ago

    Ys

    0Thank You

    ANSWER

    • Posted by Pavithra A 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Vinay Gautam 5 years, 11 months ago

    Ya

    0Thank You

    Gaming Zone 5 years, 11 months ago

    because its comming in boards??

    0Thank You

    ANSWER

    • Posted by Deva T 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Anju Yadav 5 years, 11 months ago

    Do any chapter which u can completely. U don't have to take tense about that .examiner will simply ask ur chapter. So simple.

    0Thank You

    .. Chaudhari 5 years, 11 months ago

    Organic

    0Thank You

    Pavithra A 5 years, 11 months ago

    Viva itself is a chalange

    0Thank You

    Kriti Sharma 5 years, 11 months ago

    Do organic

    0Thank You

    ANSWER

    • Posted by Jhunu Mishra 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Riya Rana 5 years, 11 months ago

    Extremely reactive

    0Thank You

    ANSWER

    • Posted by Aman Singh 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Pappy Kumari 5 years, 11 months ago

    Because methyl can form hydrogen bonding

    0Thank You

    Vishal Bohat 5 years, 11 months ago

    Because of hydrogen bonding

    0Thank You

    Gargi Rathore 5 years, 11 months ago

    Due to hydrogen bonding

    0Thank You

    ANSWER

    • Posted by Priyansh Vyas 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Jaya Kaushik 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Kavya Rathore 5 years, 11 months ago

    Yes I will

    3Thank You

    ANSWER

    • Posted by Tanisha Kataria 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Arya Singh 5 years, 11 months ago

    Bcz 3rd ionization enthalpy of 4d and 5d series is high While in the case of Cr+3 and Cr+2, Cr+3 is more stable bcz of fully filled t2g In the case of Fe+3 it has d5 configuration which is half filled And same in the case of Mn+2

    0Thank You

    ANSWER

    • Posted by Gargee K 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Vinay Gautam 5 years, 11 months ago

    Gargi from where u r if u dont mind plz

    0Thank You

    ANSWER

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