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    • Posted by Prashant . 5 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Karthika B 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Divya Bharti 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Shivanshu Rathour 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Shreya Bhardwaaj 7 years, 5 months ago

    It describes the breaking of electron orbital states usualy d or f. Orbital

    2Thank You

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    • Posted by Piyush Bhatt 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Manasi Mirajkar 7 years, 5 months ago

    Diamagnetic are those which have no unpaired electron in vbt . Paramagnetic are those which contain no. of unpaired electron in vbt.

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    • Posted by Sachin Saini 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Srishti Khare 7 years, 5 months ago

    Standard. Hydrogen electrode used in making electrochemical series... Read about it more in electrochemistry

    1Thank You

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    • Posted by Sakshi Panjaria 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Jayesh Solanki 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Monu The Black 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    E S 7 years, 4 months ago

    Drugs used against histamines which causes inflammation .eg. dimetapp,seldane

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    • Posted by Pratiksha Patel 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Akanksha Rajawat 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Medhavi Singh 7 years, 5 months ago

    Because of more electron density

    4Thank You

    Khushi? Rana?? 7 years, 5 months ago

    Due to pH value

    1Thank You

    Abhinav Kalaliya 7 years, 5 months ago

    Less de localisation of electron pair in NH3

    1Thank You

    Sourav Mukherjee 7 years, 5 months ago

    Due to presence of lone pair and stronger bond in NH3

    2Thank You

    ANSWER

    • Posted by Akanksha Rajawat 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Richa Sharma 7 years, 5 months ago

    Phospine produces a toxic effect on the organism's so, this effect is potentiated by the presence of additional CO2?

    1Thank You

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    • Posted by Resham Bawa 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Medhavi Singh 7 years, 5 months ago

    Actually phenol is more acidic than alcohol because phenoxide ion is resonance stablised.... ?✌

    2Thank You

    Khushi? Rana?? 7 years, 5 months ago

    Because alcohol completely ionise in acidic medium to form H positive ions

    2Thank You

    Adarsh Tiwari 7 years, 5 months ago

    In phenol resonance happens due to which there is delocalisation of electron but in alcohol resonance does not occur........

    2Thank You

    Ammu Ammu 7 years, 5 months ago

    in alchohol, carbon is sp3 hybridised but in phenol, carbon is sp2 hybridised ie partial double bond character due to resonance. so OH not easily diaplaced from phenols

    4Thank You

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    • Posted by Aashi Gupta 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yogita Ingle 7 years, 5 months ago

    Oxidizing agents get reduced in a chemical reaction. Reduction involves gain of electrons. H2SO4 is a strong acid which reacts by donating an H+ion. Strong acids are proton donors and electron acceptor by definition. So H2SO4 will accept an electron during reaction.by accepting an electron it is undergoing reduction so it is an oxidizing agents.

    1Thank You

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    • Posted by Shristi Somya 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Srishti Khare 7 years, 5 months ago

    NH2-CO-CH2-CH2-CH(Br)-CH(CH3) -CH2-CH2-CH3

    0Thank You

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    • Posted by Amrit Ujjawal 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Raj Shankar Shukla 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Vishwajeet Pilania 7 years, 5 months ago

    Sn + Cl2 or Fe + HCl would do the job

    2Thank You

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    • Posted by Abhinav Singh 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Srishti Khare 7 years, 5 months ago

    CH3 | CH3-C-Cl | CH3

    1Thank You

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    • Posted by Sunil Chandravanshi 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Brahmjot Kaur 7 years, 5 months ago

    The variable oxidation number in 3d series is due to empty d orbitals. The metal can make bond with any of the ligand which results in the variation of expiration state.

    0Thank You

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    • Posted by Priyanka Tak 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Deepa Singh 7 years, 5 months ago

    Due to doping by pentavalent atom the concentration of free electron in the crystal lattice increases so the conductivity increases

    0Thank You

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    • Posted by Priyanka Tak 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Shreya Bhardwaaj 7 years, 5 months ago

    It is due to extra free delocalised electron

    1Thank You

    ANSWER

    • Posted by Anamta Ayaz 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Naina Kumari 7 years, 5 months ago

    Nitrogen is in +5 oxidation state in NO3

    0Thank You

    ANSWER

    • Posted by Shriya Gautam 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Deepa Singh 7 years, 5 months ago

    Through the chemical equation given Check the oxidation state of the elements ,you will come to know about the number of electrons (n) used up.

    2Thank You

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    • Posted by Tarun Goswami 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Tarun Goswami 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yogita Ingle 7 years, 5 months ago

    Molality and molarity of a solution are identical for very dilute solution. i.e having higher amount of water as solvent.
    Example : Very less amount of NaOH in high amount of around 500 g  water will have same value of Molality and molarity due to presence of high amount of water .
    Reason : Molality is defined as the no. of moles of solute per kilogram of solvent. Because the density of water at 25°C is around 1kg/litre thus the molality is approximately equal to molarity for dilute aqueous solutions at this temperature.

    3Thank You

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    • Posted by Gaurav Kumar 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yogita Ingle 7 years, 5 months ago

    The smallest group of atoms or molecules, whose repetition at regular intervals in three dimensions produces a crystal, is called as a Unit cell. Hence, a unit cell is the smallest portion of a crystal lattice which, when repeated in different directions, generates the entire lattice. Each unit cell is defined in terms of lattice points – the points in space about which the particles are free to vibrate in a crystal.

    The position of atoms, molecules, or ions in a solid crystal, relative to one other in space, is usually designated by points. Such a representation is called space lattice. Thus, we define the space lattice as an array of points showing how molecules, atoms or ions are arranged at different sites in three-dimensional spaces.

    1Thank You

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    • Posted by Pawan Guru 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Taruna Soni 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Karanveer Singh 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Deepak Chaurasiya 7 years, 5 months ago

    Those substance which are strongly attracted by magnetic field lines are called ferromagnetic for example:-cobalt,iron etc. And those subtance which have zero magnetic moment in magnetic field line is call antifeeromagnetic for example:-Mno

    2Thank You

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    • Posted by Koran Lagali Koran Lagali 7 years, 5 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Sourabh Sheokand 7 years, 5 months ago

    When we heat NaCl in sodium atmosphere then the sodium partical in atmosphere react with NaCl crystal and the amount of Na in crystal is increasing then the colour is changing white to yellow (because the color of crystal sodium is yellow)

    2Thank You

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