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    • Posted by Sanskriti S 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Vishnu Raj 6 years, 11 months ago

    It exists as an ionic compound [PCl4]+ and (PCl)6-

    2Thank You

    I Am Me 6 years, 11 months ago

    In gaseous form it is covalent whereas in aq. Or solid it is ionic.

    2Thank You

    ANSWER

    • Posted by Sriyanshi Sharma Sharma 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Aryan Rai 5 years, 8 months ago

    If you have remembered all the name reaction and preparation reaction then i think a little hard work can solve the problem of conversion too. Practice some important conversions and understand it rather than mugging up. And if this don't work then remember and practice all the conversions from previous 10 years question paper.

    2Thank You

    Arihant Pratap Singh 6 years, 11 months ago

    It's important so please do not leave

    3Thank You

    ANSWER

    • Posted by Rohan Sharma 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Tanisha Choudhary 6 years, 11 months ago

    Because half filled shell is more stable

    1Thank You

    ANSWER

    • Posted by Simmi Simi 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yogita Ingle 6 years, 11 months ago

    In the laboratory, sulphur dioxide is prepared by the reaction of metallic sulphite or a metallic bisulphite with a dilute acid. For example, a reaction between the dilute sulphuric acid and sodium sulphite will result in the formation of SO2.

    Na2SO3 + H2SO4 → Na2SO4 + H2O + SO2

    Commercially it is obtained as a by-product released from the roasting of sulphide ores. The gas obtained is dried, liquefied and then stored in steel cylinders.

    4FeS2 (s) + 11 O2 (g) →2Fe2O3 (s) + 8SO2 (g)

    1Thank You

    ANSWER

    • Posted by Niteen Yaduvanshee 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Ash Thunderbird ✔ 6 years, 11 months ago

    Inorganic toh seedha Ratta Maar h. (Even if you have understood the concepts, you need to go through some questions). Organic tavajjoh chahti h mtlb practice the reactions and nomenclature everyday thoda-thoda and keep revising in 2-3 days. Chapter 14, 15, 16 (10 marks) theoretical zyada h toh jldi ho jayega. Hope it helped!

    4Thank You

    ANSWER

    • Posted by Kshitij Bajpai 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Sriyanshi Sharma Sharma 6 years, 11 months ago

    Bcz it is highly ring activating grp

    3Thank You

    ANSWER

    • Posted by Kshitij Bajpai 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Vishnu Raj 6 years, 11 months ago

    Aniline on reaction with AlCl3 forms a salt.. Benzoic acid bcz of COO- group.. Nitro benzene electron donating group

    0Thank You

    ANSWER

    • Posted by Kshitij Bajpai 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Yugansh Chauhan 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Ash Thunderbird ✔ 6 years, 11 months ago

    Questions have come in exams from this topic like: Explain "target molecules are used in medicinal chemistry" or "How can drug inhibit the attachment of substrate on active site"?

    0Thank You

    ANSWER

    • Posted by Kiran Bulbule 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Tanisha Choudhary 6 years, 11 months ago

    If functional groups are same and divalent or polyvalent but different alkyl on thr either of the functional group then it is called metamer and that phenmeaon is known as metamerism

    0Thank You

    ANSWER

    • Posted by Aditya Takuli 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Dharshika As 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Honey Singh 6 years, 11 months ago

    No

    1Thank You

    Anmol Khipal 6 years, 11 months ago

    no

    1Thank You

    ANSWER

    • Posted by Anshul Prakash 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Ash Thunderbird ✔ 6 years, 11 months ago

    A unit formed by the attachment of a base to 1' position of sugar is nucleoside. When this nucleoside is linked to a phosphoric acid at 5' position of sugar moeity, we get a nucleotide.

    0Thank You

    ANSWER

    • Posted by Yuvraj Hu 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Mukesh Meena 5 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Dharshika As 6 years, 11 months ago

    focus on the chapetrs which have more weightage and are easy for you to learn also try to complete previous 10 boards question papers and also sample papers issued by cbse in the official website

    1Thank You

    ANSWER

    • Posted by Pratigya Sharma 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Pratigya Sharma 6 years, 10 months ago

    Ch3OH form when it treated with aqKOH

    0Thank You

    Pragya Gupta 6 years, 11 months ago

    Ch3 oh ..kcl

    1Thank You

    Anjana Sherawat 6 years, 11 months ago

    I think CH3OH will be formed

    0Thank You

    ANSWER

    • Posted by Chesta Jain 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Ajinkya P 6 years, 11 months ago

    Because of the +I groups that are attached with haloalkanes they provide electons to the central atom and allow the easy substitution rather than in haloarenes the benzene ring which exert -I effect makes it difficult for the leaving group to be substitute d.

    1Thank You

    ANSWER

    • Posted by Being Updated To Everything 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Deepak Jindal 6 years, 11 months ago

    We cannot store copper sulphate solutions in a zinc pot.

    0Thank You

    Yogita Ingle 6 years, 11 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.

    3Thank You

    ANSWER

    • Posted by Anil Kashyap 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Pragya Gupta 6 years, 11 months ago

    Cacl2

    1Thank You

    Rupas Chettri 6 years, 11 months ago

    Cacl

    0Thank You

    Aman Goyal 6 years, 11 months ago

    CaCl↓2

    0Thank You

    ANSWER

    • Posted by Amit Debnath 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Pragya Gupta 6 years, 11 months ago

    0

    0Thank You

    Dharshika As 6 years, 11 months ago

    0

    0Thank You

    Deepak Jindal 6 years, 11 months ago

    0

    0Thank You

    Rupas Chettri 6 years, 11 months ago

    0

    0Thank You

    ANSWER

    • Posted by Abhi Sharma 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yogita Ingle 6 years, 11 months ago

    • This principle was in favor of the wave nature of matter
    • It stated that it is impossible to simultaneously evaluate the precise position and momentum of particle. There is always some probability in predicting the position and momentum of a particle. Mathematically, it can be written as:

                       (Δx)(Δp) ≥ h/(2π)

    Considering the above equation, 2 cases are possible:

    • Case-1- If precise momentum(p) of an electron is known, then its wavelength by De Broglie’s hypothesis will be constant:

                  λ = h/pIt means that the wavelength has a fixed value and the wave is extended infinitely throughout the wave. Hence, it is impossible to find the position of the wave.

    Mathematically, if   p = fixed  , Then, Δp→0, Δx→∞
    Case-2- If the wave is localized, having finite end points
    As we can see in the diagram, the wavelength (λ) is not fixed, so the momentum (p) is also not fixed.
    Hence, there is uncertainty in both, momentum (p) and position (x).

    1Thank You

    ANSWER

    • Posted by Farhan Syed 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Gaytri Devi 6 years, 11 months ago

    To start the titration fast

    2Thank You

    ANSWER

    • Posted by Rajat Dhull 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Dharshika As 6 years, 11 months ago

    ncert is the best book for boards preparatipn

    0Thank You

    Sneha Bansal 6 years, 11 months ago

    Ncert theory is compulsory and sufficient too...

    1Thank You

    Gaytri Devi 6 years, 11 months ago

    You may read ncert and arihant book and also see last years paper

    2Thank You

    ANSWER

    • Posted by Suman Das 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Kishu Raj 6 years, 11 months ago

    In real life it is difficult to weigh the macromolecules so we measure their weight by preparing its aqueous solution and finding its mass by density related to osmotic pressure. Hope this would be the answer....

    0Thank You

    ANSWER

    • Posted by Gourav Sharma 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Kuldeep ?? 6 years, 11 months ago

    You can take help from cbse guide.

    1Thank You

    ANSWER

    • Posted by Suman Das 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Harsh Dangi 6 years, 11 months ago

    Because 4nitrobenzoic acid is more acidic as it easily releases hydrogen as compared to benzoic acid...4nitrobenzoic contains electron withdrawing group which is the reason for its more acidic nature and less pka value

    2Thank You

    ANSWER

    • Posted by Sachida Nanda Durga 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Abhishek Kumar 6 years, 11 months ago

    Sugar which reduce felhling solution and tollens reagent are reducing sugar.

    1Thank You

    ANSWER

    • Posted by Preet Ramgarhia 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Suraj Lata Chaudhary 6 years, 11 months ago

    Because constituent particles in solids have fixed positions and can only oscillate about their mean positions.

    0Thank You

    ANSWER

    • Posted by Saloni Singh 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Suraj Lata Chaudhary 6 years, 11 months ago

    It is not necessary to mug up all the conversations and reagents . You should practice the conversation by writing it until you remember it.

    1Thank You

    ANSWER

    • Posted by Anu Anu 6 years, 11 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Ajinkya P 6 years, 11 months ago

    Because physiosorption involves van der wal forces of bonding which may aquire more than a single layer for bonding

    1Thank You

    ANSWER

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