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    • Posted by Mannavan J 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Komal Tatrari 6 years, 9 months ago

    Melting point is directly proportional to no of unpaired electrons Cr has 5 up e in 3d while vanadium has 3

    0Thank You

    ANSWER

    • Posted by Akashita Satapathy 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Ambuj Mishra?? 6 years, 9 months ago

    Do therory chapters like ch-14,15,16,5,6and in chp 1 , 4and 2 learn important formulae so u will get min. 24 marks and see the cbse previous year questions u can pass it...☺

    2Thank You

    ANSWER

    • Posted by Gagan Manwani 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Yogita Ingle 6 years, 9 months ago

    The process of coating Zinc layer on articles made copper or iron or other metals, which gets corrosion when exposed moist air for long time is called galvanization.
    Ex: Iron Bridge can be protected from rusting by galvanizing the iron using zinc.

    2Thank You

    Komal Tatrari 6 years, 9 months ago

    Coating iron objects with the layer of zinc carbonate

    0Thank You

    ANSWER

    • Posted by Priya Mishra 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Akshat Mishra 6 years, 9 months ago

    Yes ?

    3Thank You

    Tar Ajhei 6 years, 9 months ago

    Yes

    2Thank You

    ANSWER

    • Posted by Himanshu Bhardwaj 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Peeyush Sharma 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Rajat Panwar 6 years, 9 months ago

    Structure , reaction and reasoning

    1Thank You

    ANSWER

    • Posted by Harsh Sharma 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Komal Tatrari 6 years, 9 months ago

    When silver salt of carboxylic acid is treated with bromine in the presence of chloroform carbon dioxide + ethyl bromide + silver bromide are formed example when silver salt of ethanoic acid is treated with bromine bromomethane is formed along with agbr and carbon dioxide

    1Thank You

    ANSWER

    • Posted by Lovepreet Vinayak 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Yogita Ingle 6 years, 9 months ago

    These are batteries that can be recharged after use by passing current through the electrodes in the opposite direction i.e., from the negative terminal to the positive terminal. For example, a lead storage battery that is used in automobiles and inverters can be recharged a limited number of times.

    0Thank You

    Peeyush Sharma 6 years, 9 months ago

    Cells which are rechargeable !

    0Thank You

    ANSWER

    • Posted by Sãñjü Dïdêl 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Taqdees Fatima 6 years, 9 months ago

    Only AgBr shows both defect

    1Thank You

    Yogita Ingle 6 years, 9 months ago

    AgCl and AgBr shows both effects.
    Due to size difference in their atoms they prefer to show Frenkel effect and also
    due to largest Coordination no. and missing of ions in the lattice it shows the Schottky effect.

    1Thank You

    ANSWER

    • Posted by Harsh Sharma 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Nancy Sehrawat 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Sarvagya Yadav 6 years, 9 months ago

    Because molecules collide with kinetic energies greater than or equal to activation energy

    1Thank You

    ANSWER

    • Posted by Anshika Babbar 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Pragati Verma 6 years, 9 months ago

    No

    1Thank You

    Raj Nathwani 6 years, 9 months ago

    Yes

    1Thank You

    ANSWER

    • Posted by Snehashish Datta 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Rakesh Tiwari 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    K G 6 years, 9 months ago

    5

    0Thank You

    ANSWER

    • Posted by Shreya Sharma 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 5 answers

    Gajendra Singh Rajput 6 years, 9 months ago

    To score 45+ in chemistry you need to solve ncert back and intext questions+previous year question papers to get a hang of the kind of questions asked in the exams.

    1Thank You

    Sarvagya Yadav 6 years, 9 months ago

    Yes of course

    0Thank You

    Shreya Sharma 6 years, 9 months ago

    Why

    2Thank You

    Gajendra Singh Rajput 6 years, 9 months ago

    No

    0Thank You

    Ajay Pathak 6 years, 9 months ago

    Yup

    1Thank You

    ANSWER

    • Posted by Ramesh Kumar 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Rishab Bhardwaj 6 years, 9 months ago

    Chapter 1 to 5 =5m each Ch 6 =3m Ch7=8m Ch8=5m Ch9=3m Chapter 10,11,12,13 =18m Ch14,15,16=10m

    2Thank You

    ANSWER

    • Posted by Kheem Koranga 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Komal Tatrari 6 years, 9 months ago

    Its pentaacetate doesn't react with hydroxyl amine It doesn't react with Schiff base It doesn't react with NaHSO3 IT DOESN'T SHOW CARBONYL PEAK IN INFRA-RED SPECTROSCOPY

    2Thank You

    ANSWER

    • Posted by Dinesh Kumar 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Sandra Suresh 6 years, 9 months ago

    Name rctns and conversion questions

    2Thank You

    Rishab Bhardwaj 6 years, 9 months ago

    Do all name reaxns Do back excercise questions basically that one in which there is series of reanx and we need to find A to E products.

    1Thank You

    ANSWER

    • Posted by Dinesh Kumar 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Ambuj Mishra?? 6 years, 9 months ago

    Formic acid will give tollens reagent...

    1Thank You

    Priyanshu Chandola 6 years, 9 months ago

    Acetic acid give carbonate test

    1Thank You

    Komal Tatrari 6 years, 9 months ago

    Tollens test formic acid wil give tollens test

    1Thank You

    Suhani Rana? 6 years, 9 months ago

    Iodoform test , acetic acid can give but not formic acid.

    1Thank You

    ANSWER

    • Posted by Rohit Jain 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Harshita Panwar 6 years, 9 months ago

    Due to more strong bond btw them due to which their boiling point are increased

    0Thank You

    ANSWER

    • Posted by Pandat Kd 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Rohit Jain 6 years, 9 months ago

    Group 15 element

    0Thank You

    Aryaman Singh Tomar 6 years, 9 months ago

    Grp-15

    1Thank You

    ANSWER

    • Posted by Aryaman Singh Tomar 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Gajendra Singh Rajput 6 years, 9 months ago

    3 marks

    2Thank You

    Kritarth Tripathi 6 years, 9 months ago

    4 marks aur 3 depends on the set

    1Thank You

    ANSWER

    • Posted by Nishchal Chandel 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Rohit Jain 6 years, 9 months ago

    Poor shielding of 4f electrons led to considerable increment in effective nuclear charge if the atom. This reduces the size of the atom much. And due to 4f electrons are called lanthanides, therefore there contraction is called lanthanides contraction.

    2Thank You

    ANSWER

    • Posted by Kartik Periwal 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Harshita Panwar 6 years, 9 months ago

    Protein found in a biological system with a unique three dimensional structure and biological activity

    0Thank You

    ANSWER

    • Posted by Gb Rana 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Rs Pandey 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Hanu Saini 5 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Moni // 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Hanu Saini 6 years, 9 months ago

    Related to hot and conc Na0H rxn

    0Thank You

    ANSWER

    • Posted by Ankit Chahal 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Sandra Suresh 6 years, 9 months ago

    Study principles and imp eqns

    1Thank You

    ANSWER

    • Posted by Gaurav Binwal 6 years, 9 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

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