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    • Posted by Ujjwal Ji 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Vithika Singh 7 years, 9 months ago

    Abe Randi karishma bewkuf kis KO bana rahi h be...Sara setting kr k post ki hu..bhikari sali paisa k liye kisi ka v future barbad kr dogi tmlog

    1Thank You

    ANSWER

    • Posted by Diya Dyan 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Diya Dyan 7 years, 9 months ago

    Then what is the name of kf

    0Thank You

    Akash Agarwal 7 years, 9 months ago

    When molality of soln is unity then the elevation in boiling point is eql to the molal elevation constant.

    1Thank You

    ANSWER

    • Posted by Rahul Edu Net 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    J Ranjan Parida 7 years, 9 months ago

    ?????

    0Thank You

    Ram Gupta 7 years, 9 months ago

    Just go and do some chemical reaction evolving gases and listen the music ...???

    1Thank You

    ANSWER

    • Posted by Poonam Singh 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Rahul Tiwari 7 years, 9 months ago

    download from cbse.nic .in

    1Thank You

    ANSWER

    • Posted by Md Javed Akhter 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Diya Dyan 7 years, 9 months ago

    Carbohydrates that can reduce Fehling's solution and tollens reagents

    0Thank You

    ANSWER

    • Posted by Ajay Kewat 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Vithika Singh 7 years, 9 months ago

    Aisa kuch nhi hota sale question setter k mood pe depend krta h khi se v utha k de deta h..phy ka paper hi dekh lo

    1Thank You

    J Ranjan Parida 7 years, 9 months ago

    Organic part carry 28 marks inorganic is of 19 and physical is of 23 marks

    4Thank You

    ANSWER

    • Posted by Bhargavi Ramanathan 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Rohit Ladwal 7 years, 9 months ago

    Ue any mild oxidising reagent like kmno4 , k2cr2o7 ,HNO3

    1Thank You

    Akash Agarwal 7 years, 9 months ago

    Acidic kMnO4

    1Thank You

    Akash Agarwal 7 years, 9 months ago

    Add acidia kano4

    1Thank You

    ANSWER

    • Posted by Neha Tomar 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Shruti Agarwal 7 years, 9 months ago

    This method is based on the principle that differently components of a mixture are differently adsorbed on the adsorbent.

    0Thank You

    ANSWER

    • Posted by Sachi Bajpai 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Rohit Ladwal 7 years, 9 months ago

    Ans. 3.66 sec.

    0Thank You

    ANSWER

    • Posted by Anchal Ahuja 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    A Cj 7 years, 9 months ago

    Soap*

    0Thank You

    A Cj 7 years, 9 months ago

    Page number 451, types of soap under medicated Susie

    1Thank You

    ANSWER

    • Posted by Neha Tomar 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Salma Khan 7 years, 9 months ago

    No,both are same,it contains 2 to 4%of carbon with some impurity

    0Thank You

    ANSWER

    • Posted by Neha Tomar 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Neha Tomar 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Akash Agarwal 7 years, 9 months ago

    Trimethyl?

    2Thank You

    ANSWER

    • Posted by Neha Tomar 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Go Pi 7 years, 9 months ago

    Sorry. ERG (-CH3) in methylamine increase the proton acceptibility or basic strength of the ring. pKb is more for was less basic compounds.

    1Thank You

    Go Pi 7 years, 9 months ago

    Aniline is more stable than anilium ion. Hence proton acceptibility or the basic nature of methyl

    1Thank You

    Go Pi 7 years, 9 months ago

    Sorry. Thas wrong.

    0Thank You

    Go Pi 7 years, 9 months ago

    Presence of electron releasing group decreases the acidity of aniline. (H+ is not freely released). pKa value is more for wear acids.

    0Thank You

    ANSWER

    • Posted by Nishtha Pandya 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Nishtha Pandya 7 years, 9 months ago

    Pls some1 answer it......!!!

    2Thank You

    ANSWER

    • Posted by Ranju Don 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Aman Jha 7 years, 9 months ago

    Easy h ...page no.429

    1Thank You

    Go Pi 7 years, 9 months ago

    Refer to this page you'll get idea

    0Thank You

    Go Pi 7 years, 9 months ago

    PG.429

    0Thank You

    ANSWER

    • Posted by Ranju Don 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Go Pi 7 years, 9 months ago

    Phosphodiester linkage

    0Thank You

    ANSWER

    • Posted by Muskaan Gugnani 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Go Pi 7 years, 9 months ago

    Ag Br both doesn't have very much size difference(almost similar sizes). So it show schottky defect. While it also shows Frenkel defect as the cation (Ag) could disslocte to interstitial sites.

    3Thank You

    ANSWER

    • Posted by Ansh Gautam 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER
    Vxt

    • Posted by Prerna Negi 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Muskaan Gugnani 7 years, 9 months ago

    Velocity X time is equal to displacement

    1Thank You

    ANSWER

    • Posted by Prerna Negi 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Nishtha Pandya 7 years, 9 months ago

    *rea..n rate constant* Rea..n rate const... is a const.. of proportionality in rate law eq..n & is equal to the rate of rea..n when the molar conductance of each of the reactants is unity .......................................................................................... Eate const... is const... for a particular rea..n at a particular temp.. & does not depends upon the concentra..n of the reactants . ..........................................................................................unit depends on order of re..n 0th order : mol L^-1 s^-1 1st order : s^-1 2nd order : mol^-1 L sec^-1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *rate of re..n * It is the change in concentra..n of a reactant or product per unit time . ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This at any instance of time depends upon the molar concentra..n of the reactants at tht time . ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Unit : mol L^-1 time^-1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ???✌✌✌???

    6Thank You

    Shefali Mourya 7 years, 9 months ago

    Rate expression tells us how the appearance /disappearance rates of reactants and products relate each other and rate constant is constant of proportionality that comes out of the rate law

    1Thank You

    ANSWER

    • Posted by Prerna Negi 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Shefali Mourya 7 years, 9 months ago

    It is an expression which accounts the rate constant and reaction order.

    1Thank You

    ANSWER

    • Posted by S Divya 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Go Pi 7 years, 9 months ago

    https://www.embibe.com/exams/cbse-class-xii-marking-scheme-and-weightage-distribution-for-2017/

    1Thank You

    Shefali Mourya 7 years, 9 months ago

    Its given in this app in syllabus portiom

    2Thank You

    ANSWER

    • Posted by Priya Dubey 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 6 answers

    Priya Dubey 7 years, 9 months ago

    Ok thanks everyone... ?

    1Thank You

    Aman Jha 7 years, 9 months ago

    Exceptional case asked derivation . But many times asked numericals.

    1Thank You

    Shefali Mourya 7 years, 9 months ago

    Yes they are important

    3Thank You

    S Divya 7 years, 9 months ago

    Yes . I have seen it in a previous year paper . Its easy to learn

    2Thank You

    Go Pi 7 years, 9 months ago

    Don't ever waste Time on it.

    1Thank You

    Yaduvanshi Yaduvanshi 7 years, 9 months ago

    No i think

    1Thank You

    ANSWER

    • Posted by Diya Dyan 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Anil Verma 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Ruby Bajwa 7 years, 9 months ago

    As in ferromagnetic substances when placed in magnetic field their domains get alligned in direction of magnetic field.

    1Thank You

    ANSWER

    • Posted by Abhinay Ab 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Go Pi 7 years, 9 months ago

    Size of th colloidal particals should be comparable o that of the wavelength of the incident light. There should be greater difference in the refractive Indie o dispersion phase and medium. (page 139)

    4Thank You

    ANSWER

    • Posted by J Ranjan Parida 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Shefali Mourya 7 years, 9 months ago

    Due to sp2 hybridisation of C-atom in chlorobenzene, C-atom is more electronegative whereas in cyclohexyl chloride,C-atom is sp hybridised, i.e. less electronegative So, polarity of C—Cl bond in chlorobenzene is less than the C—Cl bond in cyclohexyl chloride. Further, due to delocalisation of lone pair of electrons of Cl-atom over the benzene ring, C—Cl bond in chlorobenzene acquires some double bond character while C—Cl bond in cyclohexyl chloride is a pure single bond. Thus, C—Cl bond in chlorobenzene is shorter than in cyclohexyl chloride. As dipole moment is a product of charge and distance, therefore, the dipole moment of chlorobenzene is lower than that of cyclohexyl chloride.

    2Thank You

    Go Pi 7 years, 9 months ago

    Dipole moment is explained by the polarity off the atoms. Electron density is more on the less electro negative atom in the case of chlorobenzene I.e on the carbon due to resonance. While there is partial negative and partial positive charge exist in the latter case, giving net dipole moment.

    1Thank You

    ANSWER

    • Posted by Riya Sharma 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Riya Sharma 7 years, 9 months ago

    sorry ... gopika

    1Thank You

    Riya Sharma 7 years, 9 months ago

    thank you k. goplika

    1Thank You

    Go Pi 7 years, 9 months ago

    Iodine forms a volatile compound of Zr( I.e Zr+I2--->ZrI4) Which is later decomposed on tungsten filament, electrically heated to abut 1800K.(ZrI4-->Zr +2I2) pure metal is deposited on the filament.

    1Thank You

    ANSWER

    • Posted by Sankkara Narayanan 7 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Go Pi 7 years, 9 months ago

    They may ask about the molar mass. If the given values are applied in the eq. [del]Tb=(kb×W2×1000)/M2×W1 Were M2 isn't given so using rhe eq, its coming as 120g. If i factor is calculated i= normal / abnormal mass. =60/120=0. Since i is less than 1 We can say the solute is associated

    4Thank You

    ANSWER

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