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    • Posted by Maha Sri 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Mahi Kumari 3 years, 10 months ago

    28 a.m.u.

    0Thank You

    Anshubh Kesarwani 3 years, 10 months ago

    28

    0Thank You

    Bhawna Bhardwaj 3 years, 10 months ago

    Atomic mass 28

    1Thank You

    ANSWER

    • Posted by Pooja Gupta 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Neyaz Ansari 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Vignesh Babu 3 years, 10 months ago

    Natural gas

    4Thank You

    ANSWER

    • Posted by Bharat Malhotra 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Kanhaiya Maddheshiya 3 years, 10 months ago

    Due to f-electrons in inner cell, Shielding effect decrease which cause decrease in size from 2nd transition series to 3rd transition series....So elements of both period elements hv about same atomic and ionic radii.this is called lanthenoid contraction

    1Thank You

    ANSWER

    • Posted by Drishty Kamboj 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Yadav T 3 years, 10 months ago

    Only structural isomersims in topi which are 4 type

    0Thank You

    Shruti Singh 3 years, 10 months ago

    Isomerism is not there bonding one is there..

    0Thank You

    ANSWER

    • Posted by Vikas Yadav 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Sumant Kumar 3 years, 10 months ago

    ---------> CH3-CH(Br)-CH3 FIRST STEP: CH3-CH2-CH2-Br + Alcoholic KOH + heat ----------> CH3-CH=CH2 SECOND STEP: CH3-CH=CH2 + HBr (Markonikov's rule)-------> CH3-CH(Br)-CH3

    3Thank You

    ANSWER

    • Posted by Manish Rajput 3 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Sia ? 3 years, 5 months ago

    Aldol Condensation can be defined as an organic reaction in which enolate ion reacts with a carbonyl compound to form β-hydroxy ketone or β-hydroxy aldehyde, followed by dehydration to give a conjugated enone. Aldol Condensation plays a vital role in organic synthesis, creating a path to form carbon-carbon bonds.

    0Thank You

    ANSWER

    • Posted by Manish Rajput 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Tanya Gautam 3 years, 10 months ago

    Dipole moments occur when there is a separation of charge. They can occur between two ions in an ionic bond or between atoms in a covalent bond; dipole moments arise from differences in electronegativity

    1Thank You

    Tanya ?? 3 years, 10 months ago

    Dipole moments occur when there is a separation of charge. They can occur between two ions in an ionic bond or between atoms in a covalent bond; dipole moments arise from differences in electronegativity. ... The dipole moment is a measure of the polarity of the molecule.

    2Thank You

    ANSWER

    • Posted by Tanya Gautam 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Sourabh Kumar Sourabh Kumar 3 years, 10 months ago

    Solid state

    0Thank You

    Monika Bhardwaj 3 years, 10 months ago

    Gravity circle is good but videos are lengthy so i also prefer aman dhattarwal

    1Thank You

    Tanya ?? 3 years, 10 months ago

    Gravity circle is also good.

    3Thank You

    Student Of The Year 3 years, 10 months ago

    I follow Arvind Arora sir for chemistry..

    4Thank You

    ANSWER

    • Posted by Ankur Sonkar 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Utkarsh Gupta 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Yash Agarwal 3 years, 10 months ago

    This is mission impossible

    0Thank You

    Devil ? 3 years, 10 months ago

    Just enjoy

    1Thank You

    Shruti Singh 3 years, 10 months ago

    Just study in small portions.. take break in between Chemistry is not that but sometime the reason is i just dont want to study it..we need to overcome that

    2Thank You

    Satvikk . 3 years, 10 months ago

    Don't Study

    1Thank You

    ANSWER

    • Posted by Akash Pandey 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Sher Singh 3 years, 3 months ago

    Colliods are those particles which have size in between true particles and suspension i.e. from 1 nm to 1000 nm

    0Thank You

    Kanhaiya Maddheshiya 3 years, 10 months ago

    This is state in which particle size range is from 1nm to 1000 nm.

    0Thank You

    ANSWER

    • Posted by Komal Jena 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Sher Singh 3 years, 3 months ago

    Due to absence of d-orbitals in its valence shell

    1Thank You

    Mr. Singh 3 years, 10 months ago

    Because of absence of d-orbitals in its valence shell. Here, the multiple bonding is due to p(pi)or p(pi)-d(pi) bonding. The vacant 3d-orbitals of S overlap with the filled 2p orbitals of O.

    2Thank You

    ANSWER

    • Posted by Mr. Singh 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Dinesh Kumar 3 years, 10 months ago

    IeV=1.6 *10^-19 J and I J equals 6.2* 10^18 eV..... Thank me later

    0Thank You

    ANSWER

    • Posted by Manish Rajput 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Utkarsh Gupta 3 years, 10 months ago

    Resonance is a way of describing bonding in certain molecules or ions by the combination of several contributing structures into a resonance hybrid in valence bond theory.

    2Thank You

    ANSWER

    • Posted by Manish Jee 3 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Sia ? 3 years, 5 months ago

    Two or more cations of lower valency are replaced by a cation of higher valency to maintain electrical neutrality. Hence some cation vacancies are created. For example : In an ionic solid 'NaCl' , is impurity of Sr2+ is added  (as SrCl2) then two Na+ ions left thus lattice sited. To maintain electrical neutrality one lattice site is occupied by Sr2+ ion while other lattice site will remain vacant.

    0Thank You

    ANSWER

    • Posted by Ankit Kumar 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Utkarsh Gupta 3 years, 10 months ago

    Colligative properties of solutions are properties that depend upon the concentration of solute molecules or ions, but not upon the identity of the solute. Colligative properties include vapor pressure lowering, boiling point elevation, freezing point depression, and osmotic pressure

    1Thank You

    ANSWER

    • Posted by Krishna Soni 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Manish Jee 3 years, 10 months ago

    The boiling point of a liquid is the temperature at which it's vapour pressure becomes equal to atmospheric pressure . But the vapour pressure of a solution is always lowered due to the addition of non volatile solute.

    0Thank You

    ANSWER

    • Posted by Yashu Yashu 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Sreethu Tnair 3 years, 7 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Sia ? 3 years, 7 months ago

    Bredig's arc method is a method of preparation of colloidal solution, of metals such as gold, silver or platinum. This method consists of both dispersion and condensation. An arc is struck between electrodes, under the surface of water containing some stabilizing agent such as traces of KOHpotassium hydroxide.

    0Thank You

    ANSWER

    • Posted by Arshid .. 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Sher Singh 3 years, 3 months ago

    The unidendate ligands which can link through two different sides of one atom are called ambidentate ligands. For example Nitrito-O and Nitrito-N

    1Thank You

    Dinesh Kumar 3 years, 10 months ago

    Ligand which can link through two different atoms of its own are ambidentate ligand. Eg: SCN can link either through Sulphur or Nitrogen..

    0Thank You

    Sajali Raeen 3 years, 10 months ago

    Special case of unidentate ligand

    1Thank You

    Himanshi Yadav 3 years, 10 months ago

    Unidentate ligands containing more than one coordinating atoms are called ambient ligands.for example No2- can link through N or O

    0Thank You

    ANSWER

    • Posted by Mr. Singh 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yash Agarwal 3 years, 10 months ago

    Yep, because of band structure at oxygen

    0Thank You

    ANSWER

    • Posted by Mr. Singh 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Manish Jee 3 years, 10 months ago

    Isopropyl alcohol is widely used in cosmetics and personal care products, such as aftershave lotions,bath products,eye and makeup products as well as nail,hair and skin care products

    0Thank You

    ANSWER

    • Posted by Dgf Chd 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Tanya ?? 3 years, 10 months ago

    The coloured dye in litmus will get adsorbed on the surface of charcoal so, i.e. why the litmus solution becomes colorless.

    3Thank You

    Devil ? 3 years, 10 months ago

    Due to adsorption

    1Thank You

    Gaurav Seth 3 years, 10 months ago

    ANSWER
    When a solution of acetic acid in water is shaken with charcoal, a part of the acid is adsorbed by the charcoal and the concentration of the acid decreases in the solution. Similarly, the litmus solution when shaken with charcoal becomes colourless.

    0Thank You

    ANSWER

    • Posted by Narendra . 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Preeti Yadav 3 years, 10 months ago

    Structure please

    0Thank You

    Mr. Singh 3 years, 10 months ago

    protein

    1Thank You

    Narendra . 3 years, 10 months ago

    protien

    2Thank You

    ANSWER

    • Posted by Mehakdeep Kaur 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Tushar Gite 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Mehakdeep Kaur 3 years, 10 months ago

    To analyse acidic and basic radicals for pb2+ and ch3coo-

    0Thank You

    ANSWER

    • Posted by Vaishanavi Narayan 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Paras Kumar 3 years, 10 months ago

    O²+[O]------>O³

    2Thank You

    ANSWER

    • Posted by Drishty Kamboj 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Gaurav Seth 3 years, 10 months ago

    A n s w e r 
    1/ Covalent, Ionic and Metallic are all bonds so strong interactions only. 
    2/ Dipole is a weak interaction and hence can be broken and reformed

    2Thank You

    ANSWER

    • Posted by Ravi Kant 3 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Meghna Thapar 3 years, 10 months ago

    Most of the reaction of fluorine is exothermic because fluorine in its elemental state is considered to be electronegative element in the periodic table of all the elements.

    The reaction of fluorine always helps in producing a huge amount of energy with the production of oxygen and water.

    Therefore, fluorine is exothermic.

    1Thank You

    ANSWER

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