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    • Posted by Ankit Gupta 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Ankur Tiwari 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Deepak Yadav 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Vidyanand Gupta 6 years, 10 months ago

    phenol is added with NaOH which gives a sodium phenoxide ion ,this is then added with CO2 and H+ which gives salicylic acid as product

    1Thank You

    Shrishti Saxena 6 years, 10 months ago

    Well it is phenol with sodiumhydroxide and CO2 to give salicycli acid

    0Thank You

    Ravi Kumar 6 years, 10 months ago

    Ncert m h

    1Thank You

    ANSWER

    • Posted by H I T E S H 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Gaurav Seth 6 years, 10 months ago

    The basicity of amines depends on the +I effect of the alkyl groups. With increase in alkyl group the +I effect will
    increase which will increase the ease of donation of lone pair electron. Amine will accept a proton and from cation will be
    stabilized in water by salvation (by hydrogen bonding).better the salvation by hydrogen bonding higher will be the basic
    strength.
    Hence, alkyl amine is more basic than ammonia 
    CH3NH2 > NH3

    2Thank You

    ANSWER

    • Posted by Rajam 1969 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Vidyanand Gupta 6 years, 10 months ago

    ZM/a^3xNa- formula is used to calculate this

    1Thank You

    Sahana Sankar 6 years, 10 months ago

    Use the formula d=(z*m)/(a^3 * Avogadro number)

    1Thank You

    ANSWER

    • Posted by Jyoti Gupta 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    G K 6 years, 10 months ago

    Isi app me miljayenge aappko

    0Thank You

    _Harina_07 . 6 years, 10 months ago

    Google

    0Thank You

    ANSWER

    • Posted by Sumit Mahato 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Suhani Rana? 6 years, 10 months ago

    This is because aniline being lewis base combine with lewis acid(FeCl3 or AlCl3 anhydrous) to form complex

    1Thank You

    ANSWER

    • Posted by Thanya Saru 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Deepak Kumar 6 years, 10 months ago

    H2S is more acidic than water because H2S is acidic(weaker) in nature while water is neutral. Also the bond between S-H is longer and weaker than the O-H bond thus SH- anion is less charge dense than OH- .

    3Thank You

    ANSWER

    • Posted by Bhavesh Prajapati 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Sandhu Sabb 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Mvs Manoj 6 years, 10 months ago

    Use NaBH4 ot LiAlH4

    0Thank You

    ANSWER

    • Posted by Ashutosh Singh 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Hafsah Mahroof 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    N Aaditya 6 years, 10 months ago

    Put the formula Log k2/k1=Ea (1/T1 - 1/T2)/2.303R.where R-8.314.

    0Thank You

    ANSWER

    • Posted by Arun Pahwa 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Gaurav Deshwal 6 years, 10 months ago

    Yes,it is sweet

    0Thank You

    ANSWER

    • Posted by Chander Kant Sharma 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    G K 6 years, 10 months ago

    Monomers - hexamethyldiamine nd Adipic acid

    1Thank You

    Arun Pahwa 6 years, 10 months ago

    Nylon 6,6 is a fibre used stiching the wounds

    0Thank You

    ANSWER

    • Posted by Garima Prajapati 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Rahul Dhakad 6 years, 10 months ago

    Tommorrow

    0Thank You

    ANSWER

    • Posted by Shavi Singh 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Rahul Dhakad 6 years, 10 months ago

    70 MARKS

    0Thank You

    ANSWER

    • Posted by Harshita Saini 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    G K 6 years, 10 months ago

    U can find in this app...

    0Thank You

    ANSWER

    • Posted by Aditya Joshi 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Suhani Rana? 6 years, 10 months ago

    It is the process which involve formation of undesirable compound on the surface of metal when they are exposed to atmospheric gases and moisture

    0Thank You

    ANSWER

    • Posted by Deeksha Nimje 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yogita Ingle 6 years, 10 months ago

    In case of aromatic carboxylic acid –COOH attach to the Benzene ring having an electron withdrawing effect and deactivated the benzene ring, hence do not exhibit Friedel craft reaction.

    0Thank You

    ANSWER

    • Posted by Deeksha Nimje 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Nitika Neb 6 years, 10 months ago

    Mix Toluene (3 ml), Potassium Permanganate (10 grams) and dilute solution of sodium hydroxide in water (20 ml) in round bottom flask and set up the reflux. Allow mixture to reflux for 3 to 4 hours until oily toluene disappears. Then cool down the solution and filter the manganese oxide from the solution. Now addition of concentrated HCl to the filtrate will give you the precipitate of benzoic acid . You can either recrystallize it with hot H2O, or can extract the benzoic acid with ether. The reaction is simple oxidation where Methyl group gets converted to carboxylic group by the use of potassium permanganate as an oxidizing agent. Potassium hydroxide is used to provide alkaline medium because strong oxidizing agent Mn+7 is stable only in alkaline medium. Under neutral conditions Mn+7 is reduced to Mn+4 and under acidic conditions it is reduced to Mn+2; both of which are less powerful oxidizing agents. Added HCl first neutralizes the added KOH and after that converts potassium benzoate ( present in soluble form in filtrate after reflux) into benzoic acid. Just add k2cr2o7 and benzoic acid will be prepared

    0Thank You

    Yogita Ingle 6 years, 10 months ago

    Toluene to Benzonic acid

    2Thank You

    ANSWER

    • Posted by Deeksha Nimje 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yogita Ingle 6 years, 10 months ago

    Ethanal to Propanone

    0Thank You

    ANSWER

    • Posted by Abhishek Ranjan 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Nitika Neb 6 years, 10 months ago

    when the attacking species attack from the same side from which the leaving group is departing is known as retention and when the attacking species attack from the opposite side from which the leaving group is departing it is known as inversion

    1Thank You

    ANSWER

    • Posted by Dharmendra Yadav 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    N Aaditya 6 years, 10 months ago

    Kolbe electrolysis IN which phenol forms salicylic acid (2Hydroxybenzoic Acid)

    0Thank You

    Suhani Rana? 6 years, 10 months ago

    It is kolbes reaction and salicylic acid is formed

    0Thank You

    ANSWER

    • Posted by Akshay Mahant 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Jatin Khatri 6 years, 10 months ago

    It is not piezoelectric it's piezoelectricity. Piezoelectricity is the electricity which is generated by applying preassure.

    3Thank You

    ANSWER

    • Posted by Harshit Singh 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    N Aaditya 6 years, 10 months ago

    As both are alkali metals(valence=1)and are highly reactive so to prevent this they are kept in kerosene. Another example is lithium.

    0Thank You

    ANSWER

    • Posted by Diksha Singh 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Suhani Rana? 6 years, 10 months ago

    This is because s in sf6 is sterically protected by 6 F atom hence its hydrolysis is difficult

    1Thank You

    ANSWER

    • Posted by Satish Kumar 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Sanjay Dubey 6 years, 10 months ago

    See the ncert example 13.5

    0Thank You

    ANSWER

    • Posted by Isha Gupta 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    N Aaditya 6 years, 10 months ago

    Aspirin has anti clotting property.

    0Thank You

    ANSWER

    • Posted by Anu Roy 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Khushi Verma 6 years, 10 months ago

    In sol the attraction is necessary due to which disperse phase and dispersion medium are mixed up. But if phase is settle down so it can't possible, thus sol formation doesn't occur. Therefore Brownian movement is necessary for making stability in sol

    1Thank You

    Yogita Ingle 6 years, 10 months ago

    The Brownian movement has a stirring effect, which does not allow the particles to settle.

    OR

    Brownian movement has a stirring effect which does not permit the particles to settle resulting in the stability of colloidal sols.

    Due to presence of equal and similar charges on colloidal particles causing repulsion also results in the stability of colloidal sol.

    4Thank You

    ANSWER

    • Posted by Himanshu Gujjar 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Rahul Dhakad 6 years, 10 months ago

    nylon-6 ,PAN,PMMA, Natural Rubber,Decrone,NOVOLAK,Bakelite and Biodegradable Polymer

    0Thank You

    Siddhant Gaurav 6 years, 10 months ago

    Yara chapter k last m ncert m diya hua h

    0Thank You

    ANSWER

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