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    • Posted by Nakul Srivastava 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Hitesh Kumar 7 years, 10 months ago

    Since H2SO4 is an oxidizing agent, it oxidizes HI (produced in the reaction to I2). As a result, the reaction between alcohol and HI to produce alkyl iodide cannot occur. Therefore, sulphuric acid is not used during the reaction of alcohols with KI.

    0Thank You

    ANSWER

    • Posted by Samresh Singh 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Vineet Gupta 7 years, 10 months ago

    Because hno3 is itself an ozidizing agent and it oxidize Mohr salt , thus the quantitative analysis of kmno4 is not obtained properly

    2Thank You

    ANSWER

    • Posted by Shivanshu Yadav 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Hitesh Kumar 7 years, 10 months ago

    benzene sulfonic acid is reacted with aqueous NaOH. The resulting salt is mixed with solid NaOH and fused at a high temperature. The product of this reaction is sodium phenoxide, which is acidified with aqueous acid to yield phenol

    0Thank You

    ANSWER

    • Posted by Prince Yadav 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Nikita Mishra 7 years, 10 months ago

    Ebulioscopic constant is elevation in b.p. for one molal slon

    0Thank You

    ANSWER

    • Posted by Bhavna Choudhary 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Samresh Singh 7 years, 10 months ago

    Dil hcl is reagent and it is used as test for alcohols

    2Thank You

    Vineet Gupta 7 years, 10 months ago

    Sorry zncl2 + hcl

    0Thank You

    Vineet Kumar Gupta 7 years, 10 months ago

    anhydrous zncl

    0Thank You

    Vineet Gupta 7 years, 10 months ago

    ZnCl + HCl is Lucas reagent it is use to convert alcohol into chloroalkanes

    1Thank You

    ANSWER

    • Posted by Subhana Muslima 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Bhavna Choudhary 7 years, 10 months ago

    CH3CH2CHO+CH3MgBr--》CH3CH2CH(OH)CH3-CRO3(USED AS REAGENT)--》CH3CH2C(CH3)=O

    3Thank You

    ANSWER

    • Posted by Subhana Muslima 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Aisha Grewal 7 years, 10 months ago

    Itta sara type ni hota yar.... ???

    3Thank You

    Aisha Grewal 7 years, 10 months ago

    Ch3cho-------->[o].. Ch3cooh - - - >ch3cooNh4----->(heat) ch3coNh2----->(br2/koh) ch3nh2----->{nano 2/hcl} ch3oh---->(cu) HCHO

    3Thank You

    ANSWER

    • Posted by Pradum Kumar 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Apoorva Asati 7 years, 10 months ago

    CnH2n+2

    3Thank You

    ANSWER

    • Posted by Pradum Kumar 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Vanshika Lamba 7 years, 10 months ago

    Natural gas

    0Thank You

    ANSWER

    • Posted by Parneet Kaur 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Sudha Yadav 7 years, 10 months ago

    Bcoz they r unstable as salts

    0Thank You

    ANSWER

    • Posted by Satish Maurya 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Mohit Pathak 7 years, 10 months ago

    DNA - deoxyribose nucleic acid RNA - ribose nucleic acid

    1Thank You

    Aisha Grewal 7 years, 10 months ago

    Deoxyribose nucleic acid........ Ribonucleic acid

    2Thank You

    ANSWER

    • Posted by Md Mazharuddin 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Bhumi Choudhary 7 years, 10 months ago

    Vese to koi bhi mood ban jata h but mostly nind aati h or agar nind aye to 5 min so jana chahiye okkkk.

    1Thank You

    Vivek Saini 7 years, 10 months ago

    Vse yo Kya hova?

    2Thank You

    Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 7 years, 10 months ago

    @vineet isko #faminanize mat karna......ladko ko bhi hota hai mood swings....

    1Thank You

    ANSWER

    • Posted by Shashi Dhar Singh Singh 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Shivanshu Yadav 7 years, 10 months ago

    Phenol are formed

    0Thank You

    ANSWER

    • Posted by Manasi Chavan 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Hitesh Kumar 7 years, 10 months ago

    This is due to the lone pairs on oxygen atom attached to hydrogen atom in the -COOH group are involved in resonance and hence making the carbon atom less electrophilic. Hence ,carboxylic acids do not give thereaction of carbonlygroups same question mere pre board me aaya tha????

    4Thank You

    ANSWER

    • Posted by Candidate Yaduvanshi 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 5 answers

    Hitesh Kumar 7 years, 10 months ago

    Your welcome student student ??

    1Thank You

    Hitesh Kumar 7 years, 10 months ago

    Sahi me mai toh sochta hai hamara examiner sahi nahi tha.Tum kah rahe ho toh hoga ???? Vaise tumse kya pucha

    0Thank You

    Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 7 years, 10 months ago

    Hitish tumara external acha tha....hamare wale ne pure15 min ache se mari....

    1Thank You

    Candidate Yaduvanshi 7 years, 10 months ago

    Thanks

    0Thank You

    Hitesh Kumar 7 years, 10 months ago

    Prepare your theory. Learn all the topics of any 1 or 2 chapter . Don't worry. If you are good student you'll get good marks. School sab kar dega .examiner will ask easy question. For example He asked me. What is ohms law? What happened if convex lens is cut horizontally and vertically? What type of lens you will use if you have myopia? What is least count? Draw the graph between resistivity vs temperature for metals and non metal and for semiconductor?

    1Thank You

    ANSWER

    • Posted by Omprakash Chaudhary 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Miss Verma 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 7 years, 10 months ago

    2hydroxy 2chloro propane ....

    2Thank You

    Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 7 years, 10 months ago

    Sorry kya likh diya

    0Thank You

    Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 7 years, 10 months ago

    2 hydroxy propane

    0Thank You

    ANSWER

    • Posted by Bhavna Shukla 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Hitesh Kumar 7 years, 10 months ago

    When a didentate or a polydentate ligand contains donor atoms positioned in such a way that when they coordinate with the central metal ion, a 5 or 6 membered ring is formed, the effect is known as the chelate effect.

    2Thank You

    ANSWER

    • Posted by Vineet Kumar Gupta 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 9 answers

    Hitesh Kumar 7 years, 10 months ago

    Your welcome vineet??

    0Thank You

    Aisha Grewal 7 years, 10 months ago

    Acha... Kyo nai bnta

    0Thank You

    Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 7 years, 10 months ago

    Nahi banta

    1Thank You

    Aisha Grewal 7 years, 10 months ago

    BNta h JB bnta h CO

    1Thank You

    Vineet Kumar Gupta 7 years, 10 months ago

    Thanks hitesh bhai

    0Thank You

    Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 7 years, 10 months ago

    Ek minute ...LOL... HABERS process me CO nahi banta....

    2Thank You

    Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 7 years, 10 months ago

    If u remove co from reaction , reaction uill go in the forward directin making the reaction fast ....if u wont remove then also it will proceed but slowly and more energy has to be provided...

    1Thank You

    Aisha Grewal 7 years, 10 months ago

    It act as catalytic poisoner

    1Thank You

    Hitesh Kumar 7 years, 10 months ago

    Because CO adversely affects the activity of the iron catalyst, used in Haber's process.

    2Thank You

    ANSWER

    • Posted by Vineet Kumar Gupta 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Unique Person Arupitw 7 years, 10 months ago

    K2cr2o7is used for tanning of leather as it is an oxidizing agent

    1Thank You

    Unique Person Arupitw 7 years, 10 months ago

    Animal hides are positively charged colloidal.when it is shocked in tanin which contains negatively charged colloidal particles then mutual coagulation take place this results in hardening of leather

    3Thank You

    Vineet Kumar Gupta 7 years, 10 months ago

    Thanks bhavna

    3Thank You

    Bhavna Shukla 7 years, 10 months ago

    Animal hides are colloidal in nature. When a hide, which has +vely charged particles, is soaked in tannin which contains -vely charged colloidal particles, mutual coagulation takes place. This result in hardening of leather.

    1Thank You

    ANSWER

    • Posted by Arya Thakur 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Aisha Grewal 7 years, 10 months ago

    Trick Vrick kuch nai h... Jo suru s kr rha hota h uske mind m he sb kuch set ho jta h..... To ase vse vhm m na rho to Acha hoga

    0Thank You

    ANSWER

    • Posted by Akira Sharma 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Hitesh Kumar 7 years, 10 months ago

    because it is very reactive. It reacts very quickly with any source of proton to give hydrocarbon. It reacts with water very quickly. Therefore, it is necessary to avoid moisture from the Grignard reagents.

    0Thank You

    Shalini Tiwari 7 years, 10 months ago

    Grignard reagent should not be prepared under anhydrous conditions, because it is very reactive. It reacts very quickly with any source of proton to give hydrocarbon.

    0Thank You

    ANSWER

    • Posted by Shalini Tiwari 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Priyadharshan G Xiitha Kcs 5 years, 1 month ago

    Acetylation of aniline reduces the electron density on nitrogen. Resonance results in shifting of an electron pair from nitrogen to carbonyl group. Hence, activation effect reduces.

    1Thank You

    Shalini Tiwari 7 years, 10 months ago

    Thanks!!!

    1Thank You

    Hitesh Kumar 7 years, 10 months ago

    Because it result in decrease of electron density on nitrogen. Due to the resonance, the electron pair of nitrogen atom gets delocalised towards carbonyl group therefore so activation effect reduces.

    4Thank You

    Sahil Mangla 7 years, 10 months ago

    Due to sharing of lone pair when acetylation is done

    2Thank You

    ANSWER

    • Posted by Hitesh Kumar 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Hitesh Kumar 7 years, 10 months ago

    Thank you shalini

    0Thank You

    Shalini Tiwari 7 years, 10 months ago

    If bromine water is added to aniline, the bromine water is decolourised and a white precipitate of 2,4,6-Tribromophenylamine

    2Thank You

    ANSWER

    • Posted by Radhika Tyagi 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 5 answers

    Radhika Tyagi 7 years, 10 months ago

    Ty

    0Thank You

    Aashish Kumar 7 years, 10 months ago

    In this method pure zinc is transported to cathode from impure sample at the anode

    2Thank You

    Aashish Kumar 7 years, 10 months ago

    Electrolytic refining process

    2Thank You

    Aashish Kumar 7 years, 10 months ago

    https://www.zigya.com/share/Q0hFTjEyMTA5ODI4

    1Thank You

    Radhika Tyagi 7 years, 10 months ago

    Plz tell thr the principle as well

    1Thank You

    ANSWER

    • Posted by Love Sidhu 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 5 answers

    Aisha Grewal 7 years, 10 months ago

    Tbi usse X-AM IDEA khte h.... ? ?

    0Thank You

    Love Sidhu 7 years, 10 months ago

    Ok thnx i have xam idea but bhut questions hai usme to

    0Thank You

    Aisha Grewal 7 years, 10 months ago

    Mr sidhu jst do chemistry only and only FROM X-AM IDEA...... Or rhi interest ki bat.. Vo zrur nai h sirf 15-20 Dino k liye. ???

    0Thank You

    Unique Person Arupitw 7 years, 10 months ago

    No trick make interest and learn it

    1Thank You

    Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 7 years, 10 months ago

    Hai to hila le ..sab boriyat jaegi....

    2Thank You

    ANSWER

    • Posted by Pavan Krishna 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Arwaj Shekh 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Insha Fatima 7 years, 10 months ago

    Those synthetic detergent which is consist of long carbon chain and to which sulphonation group is attached which acts as anion are called anionic detergent

    0Thank You

    ANSWER

    • Posted by Deep Ram 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

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