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    • Posted by Yashaswi Singh 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Raunak Kumar 5 years, 10 months ago

    Dettol, iodine tincture and 50% solution of phenol

    0Thank You

    Vinay Gautam 5 years, 10 months ago

    Adi is right

    0Thank You

    Adi Kumar 5 years, 10 months ago

    Dettol savlon tincture of iodine Boric acid

    1Thank You

    ANSWER

    • Posted by Prince Thakur 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Yashaswi Singh 5 years, 10 months ago

    You will able to make this by using formula and by taking t1 and t2

    0Thank You

    Yashaswi Singh 5 years, 10 months ago

    Try it yourself

    0Thank You

    Yashaswi Singh 5 years, 10 months ago

    Very easy question

    2Thank You

    ANSWER

    • Posted by Ali Waris 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Tamanna Sharma 5 years, 10 months ago

    Glucose : aldohexose, anomeric carbon at C1 Fructose : ketohexose , anomeric carbon ar C2

    0Thank You

    ANSWER

    • Posted by Neha Singh 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Falguni Soni 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Vinay Gautam 5 years, 10 months ago

    May be nhi puchte

    1Thank You

    Adi Kumar 5 years, 10 months ago

    Graph pucha hai

    2Thank You

    ANSWER

    • Posted by Jaidev Singh 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Adi Kumar 5 years, 10 months ago

    Narcotics are mainly sleep producers . They help in reliving pain

    0Thank You

    Divya Shrivastav 5 years, 10 months ago

    Narcotics is a type of drug and with regular use it cause addiction

    0Thank You

    ANSWER

    • Posted by Priyansh Vyas 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Shivani Sagare 5 years, 10 months ago

    In simple words if you want to differentiate the u can simply answer like this Dna has double strand whereas rna has single strand. Dna contains deoxyribose sugar whereas rna contains ribose sugar. Dna helps in transfer of genetic characters whereas rna helps in synthesizing proteins. Dna has ATGC nucleotide and rna contain AUGC. Dna is of one type and rna is of 3 type mrna rrna and trna. Hope you liked the answer.......

    0Thank You

    Sonu Rao 5 years, 10 months ago

    The sugar present in DNA is it 2 deoxyribose DNA contain cytosine thymine guanin adenin bases DNA has double standard alpha helix structure DNA has property of replication DNA control the transmission of hereditary the sugar present in RNA is d ribose RNA contain cytosine uracil guanine and adenin bases RNA has single stranded alpha helix structure of rNA has not property of replication of rNA control the synthesis of protein

    0Thank You

    ANSWER

    • Posted by Mohan Singh 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Vinay Gautam 5 years, 10 months ago

    Yeh u should lrn how to read log table either from utube or from ur teacher

    1Thank You

    Pawan Kumar 5 years, 10 months ago

    Hi

    1Thank You

    Tamanna Sharma 5 years, 10 months ago

    You can see a video from YouTube channel (All' Bout Chemistry ) lecture how to calculate log and antilog l Reading log table ??l hope this will help you.

    1Thank You

    ANSWER

    • Posted by Goyal'S Freefire 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Goyal'S Freefire 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Tamanna Sharma 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 24 answers

    Tapan Pandey?? 5 years, 10 months ago

    In CuSO4.5H2O, Cu is cordinated with 4 water molecules and two more oxygen atoms fron Sulphate ion. Now fifth water molecule is hydrogen bonded and is deeply embedded in crystal. It is not cordinated. Only 4 water molecules are coordinated and fifth is only hydrogen bonded.

    1Thank You

    Aditya Chauhan 5 years, 10 months ago

    Carry on that was not the insult that was the swag i too am from haryama

    1Thank You

    Tamanna Sharma 5 years, 10 months ago

    Sabse phele chating me interest kisne dikhaya tha ,tumne matlab tum mujse bhi bade chaterbox ho

    1Thank You

    Tamanna Sharma 5 years, 10 months ago

    Dude that was not good ,tum khod hi sab soch kar bathe ho

    1Thank You

    Tamanna Sharma 5 years, 10 months ago

    But don't insult like that hello haryanvi

    1Thank You

    Adi Kumar 5 years, 10 months ago

    Only one molecule of water which us outside the coordination sphere is hydrogen bonded the other four are coordinate bonded [Cu(H2O)4]^2+ so4^2- H2O

    1Thank You

    Tamanna Sharma 5 years, 10 months ago

    Now ,you misunderstand as you know with board exam I have to prepare for jee also and in January attempt l got only 87 percentile so time is less and there is a lot of things which l have to cover,so sorry agar bura laga to??

    1Thank You

    Aditya Chauhan 5 years, 10 months ago

    No No please carry on some misunderstanding took place sorry and all the best for your exam

    2Thank You

    Aditya Chauhan 5 years, 10 months ago

    No no carry on misunderstanding took plaxe sorry please carry on your study and post many many many quetions

    1Thank You

    Tamanna Sharma 5 years, 10 months ago

    As you know boards exam are near and l passed my whole year in time waste things ,so this is very important time for studies so if you share only study material then it's ok

    1Thank You

    Aditya Chauhan 5 years, 10 months ago

    Sorry i got wrong you are not that i thought

    1Thank You

    Aditya Chauhan 5 years, 10 months ago

    Hello haryanvi

    1Thank You

    Aditya Chauhan 5 years, 10 months ago

    By making structure

    1Thank You

    Aditya Chauhan 5 years, 10 months ago

    Mean personally wrong type

    1Thank You

    Tamanna Sharma 5 years, 10 months ago

    Chalo ye sab chodo aur batao ki 4 ans kaise aya

    1Thank You

    Aditya Chauhan 5 years, 10 months ago

    Can you chat petsonally on whtspp its public any one can report

    1Thank You

    Tamanna Sharma 5 years, 10 months ago

    And you

    1Thank You

    Tamanna Sharma 5 years, 10 months ago

    Haryana

    1Thank You

    Aditya Chauhan 5 years, 10 months ago

    From where you are

    2Thank You

    Tamanna Sharma 5 years, 10 months ago

    No, but why are you asking this question ?

    1Thank You

    Aditya Chauhan 5 years, 10 months ago

    He tammana are u from himachal pradesh

    2Thank You

    Tamanna Sharma 5 years, 10 months ago

    Aditya and U how you solve it,please give me some idea that how to solve this. Or tell me it's a learning fact or a calculative question

    1Thank You

    Aditya Chauhan 5 years, 10 months ago

    4

    2Thank You

    U Know Me 5 years, 10 months ago

    4

    4Thank You

    ANSWER

    • Posted by Tamanna Sharma 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Aditya Chauhan 5 years, 10 months ago

    Sahi kaha

    1Thank You

    Tamanna Sharma 5 years, 10 months ago

    Because if you are in class 12 then at this time your focus have to be on boards exams but you give class 11 ans as well .....great

    0Thank You

    Tamanna Sharma 5 years, 10 months ago

    Yogita Ingle you are in which class 11 /12 or you are a dropper because l see you provide solution to the 11 class students as well of PCMB

    0Thank You

    Yogita Ingle 5 years, 10 months ago

    Spiegeleisen: It is an alloy of Manganese (20 - 30%) and carbon (5%) and Iron (remaining percentage).
    Roles of spiegeleisen
    1) It acts as a scavenger (cleaning agent).
    2) It acts as a deoxidizer and removes oxidized iron if present.
    3) It is added to the molten iron to maintain the required amount of carbon in steel.

    2Thank You

    ANSWER

    • Posted by Tamanna Sharma 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Aditya Chauhan 5 years, 10 months ago

    Yes yogitya is Right

    0Thank You

    Yogita Ingle 5 years, 10 months ago

    Bessemer process, the first method discovered for mass-producing steel. Though named after Sir Henry Bessemer of England, the process evolved from the contributions of many investigators before it could be used on a broad commercial basis. It was apparently conceived independently and almost concurrently by Bessemer and by William Kelly of the United States. As early as 1847, Kelly, a businessman-scientist of Pittsburgh, began experiments aimed at developing a revolutionary means of removing impurities from pig iron by an air blast. Kelly theorized that not only would the air, injected into the molten iron, supply oxygen to react with the impurities, converting them into oxides separable as slag, but that the heat evolved in these reactions would increase the temperature of the mass, keeping it from solidifying during the operation. After several failures, he succeeded in proving his theory and rapidly producing steel ingots.

    1Thank You

    ANSWER

    • Posted by Shashi Suthar 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Riya Rana 5 years, 10 months ago

    No it is not in syllabus

    0Thank You

    ANSWER

    • Posted by Tamanna Sharma 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yogita Ingle 5 years, 10 months ago

    Sintering is the process of converting powders into larger objects, using the principle of atomic diffusion. Under a specific pressure and heat below its melting point, the powder will diffuse and form a solid object.

    1Thank You

    ANSWER

    • Posted by Tamanna Sharma 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Vaibhav Srivastava 5 years, 10 months ago

    Amalgamation is the process of forming alloys of mercury by mixing it with any metal. For example, alloy of mercury and zinc.

    1Thank You

    Yogita Ingle 5 years, 10 months ago

    Amalgamation is cosolidation of one or more entity to form form new entity while absorption is only merger of two compay no new company is created. amalgmation includes absorption

    0Thank You

    ANSWER

    • Posted by Tamanna Sharma 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 5 answers

    Adi Kumar 5 years, 10 months ago

    A shape of cone is firmed with rhe optical centre of lens and colloidal particle.you can draw the figure . Its enough for two marks.

    1Thank You

    Tamanna Sharma 5 years, 10 months ago

    What we have to write if it's a 2 marks question

    3Thank You

    Adi Kumar 5 years, 10 months ago

    The bright cone of light is called tyndall cone

    1Thank You

    Tamanna Sharma 5 years, 10 months ago

    No, l was just write down my all queries at a page and when l have 8 to 9 question then l ask to you all that's why my queries are intermixed

    2Thank You

    Riya Rana 5 years, 10 months ago

    Tamanna how many subjects do you study at the same time girl.. wowo

    1Thank You

    ANSWER

    • Posted by Goyal'S Freefire 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Mahi D 5 years, 10 months ago

    Alkylidene halides means two same halogens on same carbon . They are geminal halides. Alkylene are vicinal halides which means two halogens attached to two adjacent carbon atoms

    1Thank You

    ANSWER

    • Posted by Gunjan Meena 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Tamanna Sharma 5 years, 10 months ago

    Do all NCERT questions, 5 Previous year questions by knowing the format ,then go for exemplar questions, it's enough

    1Thank You

    ANSWER

    • Posted by Sweta Thaapa 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Vaibhav Srivastava 5 years, 10 months ago

    C2H5OH + CH3COOH---------->CH3COOC2H5 + H2O

    0Thank You

    Tamanna Sharma 5 years, 10 months ago

    Reaction of carboxylic acid and alcohol gives esterwith the elimination of water( acid se OH bahar jayega and alcohol se H bahar jayega) known as esterification reaction.

    0Thank You

    Harshul Verma 5 years, 10 months ago

    When an alcohol reacts with carboxyllic acid...a fruity smell like compound is formed known as ester and the process is known as esterification

    0Thank You

    ANSWER

    • Posted by Tamanna Sharma 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Yogita Ingle 5 years, 10 months ago

    Structures of Xenon fluorides cannot be explained by Valence Bond approach. According to the valence bond approach, covalent bonds are formed by the overlapping of the half-filled atomic orbital. But xenon has a fully filled electronic configuration. Hence the structure of xenon fluorides cannot be explained by VBT

    1Thank You

    Riya Rana 5 years, 10 months ago

    Bcoz xenon has fully filled orbital and stable electronic configuration hence cannot be understood by VBT

    1Thank You

    ANSWER

    • Posted by Tamanna Sharma 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Tamanna Sharma 5 years, 10 months ago

    Thanks for giving me extra information also ,along with my question

    1Thank You

    Yogita Ingle 5 years, 10 months ago

    Hg2Cl2 is known as calomel. It is prepared by heating HgCl2 and Hg in an iron vessel. It can also be prepared by mixing mercury salt with chloride ions.
    Properties
    1) It is a white powder which is insoluble in water.
    2) Hg2Cl2 on heating dissociates into HgCl2 and Hg. action of calomel on heat 2"> Corrosive sublimate HgCl2 is a corrosive sublimate, which is prepared by passing chlorine over heated mercury or mercury chloride.
    It can also be prepared by heating mercury sulphate with NaCl. action of mercury sulphate with NaCl
    Properties
    1) It is a crystalline solid.
    2) It is soluble in hot water, ethanol and ether.
    3) HgCl2 reacts with KI and forms a colorless solution known as Nessler`s reagent. nessler s reaction

    1Thank You

    ANSWER

    • Posted by Tamanna Sharma 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Riya Rana 5 years, 10 months ago

    HOClO is more acidic because h+ ions can be furnished easily but since pKa value is inversely proportional to acidic character the pka value of HOClO is less and higher of HOCI

    2Thank You

    ANSWER

    • Posted by Shrey Mahajan 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 5 answers

    Riya Rana 5 years, 10 months ago

    Oh yes, my bad i wrote evrything entirely opposite.. yes you are right though.

    1Thank You

    Tamanna Sharma 5 years, 10 months ago

    No, Riya the pKa value for meta hydroxybenzoic acid (4.08) and for benzoic acid is (4.19) so at this time Iwas right.

    0Thank You

    Riya Rana 5 years, 10 months ago

    No tamanna benzoic acid is more acidic than meta hydroxybenzoic acid because tha pKa value of meta hydroxybenzoic acid is more it is less acidic. (BUT para hydroxybenzoic acid is more acidic than benzoic acid)

    0Thank You

    Tamanna Sharma 5 years, 10 months ago

    Metahydroxy benzoic acid is more acidic than benzoic acid because the -I and +R effect of OH group at meta position,-I effect will decrease the electron density from the ring and it can loose H+ easily from (COOH)

    0Thank You

    Riya Rana 5 years, 10 months ago

    Benzoic acid

    0Thank You

    ANSWER

    • Posted by Vijay Singh 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Omprakash Prajapati 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Vijay Singh 5 years, 10 months ago

    Chemical substance which remove harmful microorganisms but harmless to living rissue is called anticeptic.

    0Thank You

    Omprakash Prajapati 5 years, 10 months ago

    It is not harmful for tissue like 0.2phenol is a antiseptic

    1Thank You

    ANSWER

    • Posted by Sachi Pandey 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Shubhashish Ranjan 5 years, 10 months ago

    Go Through NCERT Exercise And Last 10 Years Questions.You'll Score Atleast 40 Marks In Theory.☺

    1Thank You

    Vijay Singh 5 years, 10 months ago

    Solving minimum last 5 yrs paper is good for scoring good no in exam.

    1Thank You

    Achyut Singh 5 years, 10 months ago

    Just solve prev. 10 year q.p. and you will be scoring full marks. Believe me this is not JEE. ?

    2Thank You

    Tamanna Sharma 5 years, 10 months ago

    If your all basics are cleared then this will be definitely useful for you

    4Thank You

    ANSWER

    • Posted by Kamalini Babu 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Riya Rana 5 years, 10 months ago

    No involvement of ions

    0Thank You

    Tamanna Sharma 5 years, 10 months ago

    Because after sometime electrolyte deposite on electrodes and there's no movement of ions in the solution and hence it doesn't generate potential difference and stops working.

    1Thank You

    ANSWER

    • Posted by Miss Priya Kumari 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Peshal Madhukar 5 years, 10 months ago

    15gm

    0Thank You

    Tamanna Sharma 5 years, 10 months ago

    Sorry I, forgot to multiply it by 60 molar mass of urea, so the ans is 37g ,

    2Thank You

    Tamanna Sharma 5 years, 10 months ago

    Apply unitary method 0.625

    0Thank You

    ANSWER

    • Posted by Tamanna Sharma 5 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 6 answers

    Tamanna Sharma 5 years, 10 months ago

    Peshal you are right ,but as I search from Google ,many times it doesn't give the straight forward answer ,but at this platform all 12 class students having common queries so beside my queries I also look at them.

    0Thank You

    Peshal Madhukar 5 years, 10 months ago

    Tujhe itne doubt h @Tamanna_Sharma then why don't you clear them through google??

    1Thank You

    Tamanna Sharma 5 years, 10 months ago

    Ok sorry, by mistake typing ?? don't be angry haa

    1Thank You

    Rajat Barwar 5 years, 10 months ago

    What is walden conversion, I have heard of walden inversion.....???

    1Thank You

    Aditya Chauhan 5 years, 10 months ago

    Oye ab kitna wait karaogi

    1Thank You

    Aditya Chauhan 5 years, 10 months ago

    Since a molecule can form two enantiomers around a chiral center, the Walden inversion converts the configuration of the molecule from one enantiomeric form to the other. For example, in an SN2 reaction, Walden inversion occurs at a tetrahedral carbon atom.

    1Thank You

    ANSWER

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