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    • Posted by Raj Bhadauria 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Nishu Sahu 6 years, 8 months ago

    Antimarconicoff rule is opposite to marconicoff rule. In this the negative part of attacking reagent add to those carbon which contains more number of H-atom. and positive to carbon having less H-atom.

    1Thank You

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    • Posted by Krishna Dixit 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Priya Dharshini ? 6 years, 8 months ago

    Arihant is best.

    1Thank You

    Aman Kumar 6 years, 8 months ago

    Arihant

    1Thank You

    ∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 8 months ago

    Pradeep and Arihant.

    3Thank You

    ANSWER

    • Posted by ???. Pragati 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Aman Kumar 6 years, 8 months ago

    ??

    1Thank You

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    • Posted by ???. Pragati 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Aman Kumar 6 years, 8 months ago

    Osmotic pressure is the pressure that we need to apply to stop the flow of solvent molecules from a dilute solution to a concentrated solution through a semi-permeable membrane...

    1Thank You

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    • Posted by ???. Pragati 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Rishita Shishir ?✏ 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Rishita Shishir ?✏ 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Mehak Brar 6 years, 8 months ago

    Modern ABC+

    1Thank You

    Abdul Majid 6 years, 8 months ago

    Modern ABC+

    1Thank You

    ANSWER

    • Posted by Rishita Shishir ?✏ 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Rishita Shishir ?✏ 6 years, 8 months ago

    Thanks?

    0Thank You

    Mehak Brar 6 years, 8 months ago

    Pradeep's OR modern ABC+

    2Thank You

    ANSWER

    • Posted by The Trending Guy 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Ayush Yadav 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Ayush Yadav 6 years, 8 months ago

    What?

    0Thank You

    The Trending Guy 6 years, 8 months ago

    Its 9 and 5 times more than my current age???

    0Thank You

    ANSWER

    • Posted by Sneha Balasubramanian 5 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Priya Dharshini ? 6 years, 8 months ago

    Practice sums of henrys law. Understand wat law states..... see few application of henrys law. It will help u to solve numericals

    1Thank You

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    • Posted by Gaurav Kumar 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Priya Dharshini ? 6 years, 8 months ago

    Cation is formed due to loss of electron. So its no. Of shells decreases and atomic size Reduces. Where as anions are formed due to gain of electrons. After gaining electrons there will be repulsion due to this atomic size increases

    2Thank You

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    • Posted by Ananya P 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Aman Alam 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Appy Garnara 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Yogita Ingle 6 years, 8 months ago

    Zinc is more reactive than copper. Therefore, zinc can displace copper from its salt solution. If copper sulphate solution is stored in a zinc pot, then zinc will displace copper from the copper sulphate solution.

    Zn + CuSO4  → ZnSO4 + Cu

    Hence, copper sulphate solution cannot be stored in a zinc pot.

    1Thank You

    ???. Pragati 6 years, 8 months ago

    No..Zinc is more reactive than copper. Therefore, zinc can displace copper from its salt solution. Hence, copper sulphate solution cannot be stored in a zinc pot.

    2Thank You

    ANSWER

    • Posted by ???. Pragati 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Yogita Ingle 6 years, 8 months ago

    Double salt Coordination compounds
    A double salt is a crystalline salt having the composition of a mixture of two simple salts but with a different crystal structure from either. Coordination compounds are complex structures composed of a central metal ion surrounded by molecules or ions known as ligands.
    A double salt contains two types of salt compounds crystallized in the same ionic lattice. A coordination compound contains a metal ion surrounded by ligands bonded to that metal ion via coordinate covalent bonds.
    Double salts contain ionic bonds between cations and anions. Coordinate compounds contain coordinate covalent bonds between metal ion and ligands.
    When dissolved in water, double salts are dissociated into ionic species. Coordination compounds are soluble compounds and are not separated into ionic species.

    1Thank You

    ∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 8 months ago

    I don't know much about it... but according to bookish language here is your answer ⤵️........ Coordination compound ➡️ ✴️ A coordination compound contains a central metal atom or ion surrounded by number of oppositely charged ions or neutral molecules. These ions or molecules re bonded to the metal atom or ion by a coordinate bond. ✴️ They do not dissociate into simple ions when dissolved in water. Double salt ➡️ When two salts in stoichiometric ratio are crystallised together from their saturated solution they are called double salts ✴️ They dissociate into simple ions when dissolved in water

    3Thank You

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    • Posted by Sakera Patel 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Deepak Rajput 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Sakshi Sinha 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yogita Ingle 6 years, 8 months ago

    n-type semiconductor

    • When pure Si or Ge which has four valency electrons is doped with controlled amount of pentavalent atoms, like Arsenic, Phosphorus, Antimony or Bismuth, we get a n-type semiconductor
    • The four valence electron from the impure atom will combine with four electrons of the Si or Ge atom to form 4 covalent bonds
    • The fifth electron of the impure atom is free to move. Thus, each atom of the impure substance, donates a free electron for conduction. Hence, it is called as donor atom
    • Giving the free electron for conduction, the impure atom becomes positively charged, giving rise to a hole
    • Thus in n-type semiconductors, electrons are the majority carriers and holes are minority carriers

    p-type semiconductor

    • When pure Si or Ge which has four valency electrons is doped with controlled amount of trivalent atoms, like Gallium, Indium, Boron or Aluminium, we get a p-type semiconductor
    • The three valence electron from the impure atom will combine with three electrons of the Si or Ge atom to form 3 covalent bonds
    • There will be one unbounded electron in the Ge atom which would try to form a covalent bond with the neighbouring Ge atom
    • This Ge-Ge covalent bond creates a deficiency of electron in Ge atom. Thus, creating a hole
    • This hole is compensated by the breakage of Ge-Ge covalent bond in the neighbourhood. Hence, electron moves towards the hole, resulting in hole formation at some other place
    • The trivalent atoms are called acceptor atoms and conduction of electricity is due to the motion of holes
    • Thus in p-type semiconductors, holes are the majority carriers and electrons are minority carriers

     

    1Thank You

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    • Posted by Harsh Shukla 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Tushar Kumar 6 years, 8 months ago

    Molality

    0Thank You

    Aditya Goswami 6 years, 8 months ago

    Molality is the best term for determining the conc. Because it is temp. indipendent Also bec. It depends on solvant.

    1Thank You

    Anaswara Babu 6 years, 8 months ago

    Molality

    0Thank You

    ANSWER

    • Posted by A Rai 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yogita Ingle 6 years, 8 months ago

    Raoult’s law

    • Raoult’s law establishes a quantitative relationship between the partial vapour pressure and mole fraction of a solution.
    • This law is only for liquid-liquid solution.
    • The law states that for a solution of volatile liquids, the partial vapour pressure (p) of each component in the solution is directly proportional to its mole fraction (x).
    • Mathematically, p ∝ x

                Or p = p 0x 

    Where p0 is the vapour pressure of pure component at the same temperature.

    2Thank You

    ANSWER

    • Posted by Rohit Yadav 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Anmol Gupta 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Krishna Dixit 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Priya Dharshini ? 6 years, 8 months ago

    Arihant,examidea...modern abc

    1Thank You

    ANSWER

    • Posted by Aditya Mishra 5 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Mamta Sharma 6 years, 8 months ago

    (Molality Is equal to number of moles of solute per volume in liter )when density is given, mass would be not given so ,now molality is equal to (density multiplied by volume) ,(divided by molar mass) and again (divide by volume in liter ) .

    1Thank You

    Aman Kumar 6 years, 8 months ago

    Its easy....if density is given....then first find the weight of the solvent...and after getting that...put the formula of molality....u will get the answee

    2Thank You

    ANSWER

    • Posted by Aditya Mishra 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Nidhi Verma 6 years, 8 months ago

    When gas is dissolved in liquid heat is released ,it means it is a exothermic process and in this Temp is decreased to forward the reaction hence gases are more soluble in liquid at low temperature

    1Thank You

    ANSWER

    • Posted by Sandhu Raman 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Suman Kumar 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Shweat Panday 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Prashant Singh 6 years, 8 months ago

    jab slovent mein solute ko add karoge tab jo vapour preesure solution ka lower ho jayga as compare to vapoure pressure of pure solvent.

    1Thank You

    Shweat Panday 6 years, 8 months ago

    S L arora

    0Thank You

    ANSWER

    • Posted by Pranjal Sharma 6 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Hritik Kumar 6 years, 8 months ago

    I suggested sl arora and pradeep books

    1Thank You

    ANSWER

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