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    • Posted by Ananya Saw 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Kalindi Yadav 8 years, 1 month ago

    The oxidation number of a free element is always 0. The oxidation number of a monatomic ion equals the charge of the ion. The oxidation number of "H" is +1, but it is -1 in when combined with less electronegative elements. The oxidation number of "O" in compounds is usually -2, but it is -1 in peroxides. The oxidation number of a Group 1 element in a compound is +1. The oxidation number of a Group 2 element in a compound is +2. The oxidation number of a Group 17 element in a binary compound is -1. The sum of the oxidation numbers of all of the atoms in a neutral compound is 0. The sum of the oxidation numbers in a polyatomic ion is equal to the charge of the ion.

    1Thank You

    Kalindi Yadav 8 years, 1 month ago

    The oxidation number of a monatomic ion equals the charge of the ion. The oxidation number of H is +1, but it is -1 in when combined with less electronegative elements. The oxidation number of O in compounds is usually -2, but it is -1 in peroxides. The oxidation number of a Group 1 element in a compound is +1.

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    • Posted by Anil Soy 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Kashish Bhadana 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Kalindi Yadav 8 years, 1 month ago

    Molality = Moles of solute / (Mass of solvent in Kg). Moles of solute =given mass of solute / molar mass. Solute is Chloroform.And solvent is water.Put the value of given mass according to your question and molar mass of chloroform= 118•5 g/mol to get the no of moles of solute(chloroform).And then calculate molality.

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    • Posted by Daneet Randhawa 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Deepawali Parmar 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Kalindi Yadav 8 years, 1 month ago

    The rate of reaction is the speed at which reactants are converted into products

    0Thank You

    Yuthika Yadav 8 years, 1 month ago

    Rate of reaction is the rate of disapperance of reactant and the rate of appearance of products

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    • Posted by Sonu Sorout 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Shobhitha Shetty 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Shivanshu Yadav 8 years, 1 month ago

    mathematical factor which compensates for irregularity in the shape of an object, usually the ratio between its volume and that of a regular object of the same breadth and height. 2. the physical size and shape of a piece of computer hardware.

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    • Posted by Yogesh Khetwal 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Kalindi Yadav 8 years, 1 month ago

    Acid rain is caused by a chemical reaction that begins when compounds like sulphur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

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    • Posted by Shivani Sharma 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Sudarson Sengupta 8 years, 1 month ago

    Ptc: p-toulouenesulphonylchloride

    3Thank You

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    • Posted by Virangna Roy 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Shivi Rajput 8 years, 1 month ago

    Go through NCERT page no 45

    3Thank You

    ANSWER

    • Posted by Sidharth Verma 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Kalindi Yadav 8 years, 1 month ago

    The Arrhenius equation is a formula for the temperature dependence of reaction rates. The effect of temperature on rate is given by Arrhenius law k = A.e–E/RT K = rate constant E = Activation energy R = Gas constant T = Absolute Temp. A = Frequency factor (Arrhenius Constant)

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    • Posted by Santosh Kumar 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Sudarson Sengupta 8 years, 1 month ago

    No hydrogen present

    0Thank You

    Abhishek Soni 8 years, 1 month ago

    Absence of active hydrogen

    1Thank You

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    • Posted by Himani Joshi 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Sohaib Akhtar 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Abhishek Soni 8 years, 1 month ago

    Part 2 page 336 lastvthird line

    0Thank You

    Astha Srivastava 8 years, 1 month ago

    It is given in n.c.e.r.t.

    2Thank You

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    • Posted by Jyoti Yadav 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Prerna Pahwa 8 years, 1 month ago

    Command on reagents

    0Thank You

    Jin Kazama 8 years, 1 month ago

    Sorry yha sub students hai

    0Thank You

    ANSWER

    • Posted by Nagma Khatoon Nagma Khatoon 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Jin Kazama 8 years, 1 month ago

    it is IUPAC - International Union of Pure and Applied Chemistry not IUPASE

    1Thank You

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    • Posted by Akash Chakraborty 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Ishu Chouhan 8 years, 1 month ago

    Ncert ke sare questions kar lo

    0Thank You

    Ishu Chouhan 8 years, 1 month ago

    Ncert ke reasoning questions pad lo

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    ANSWER

    • Posted by Ishu Chouhan 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Ashwani Kumar Maurya 8 years, 1 month ago

    It get disproportionate...means atom get reduce &one oxidise..

    1Thank You

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    • Posted by Ishu Chouhan 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Priya Prakash S 8 years, 1 month ago

    3

    1Thank You

    Aayisha Azeez 8 years, 1 month ago

    In H3PO4 three P_OH groups are present so its basicity is three

    2Thank You

    Rochie Joshi 8 years, 1 month ago

    3

    1Thank You

    Ashwani Kumar Maurya 8 years, 1 month ago

    Tribasic..

    2Thank You

    ANSWER

    • Posted by Ruchismita Tanty 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Amit Katariya 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Priya Prakash S 8 years, 1 month ago

    Chlorobenzene

    1Thank You

    Kanak Tiwari 8 years, 1 month ago

    Yeah it may be

    0Thank You

    Ashwani Kumar Maurya 8 years, 1 month ago

    I think chlorobenzene..

    1Thank You

    Kanak Tiwari 8 years, 1 month ago

    Chlorobenzene has a resonant effect due which carbon and chlorine bond has a partially double bond character due to which the dipole movement is decreased where as in cyclohexane there is no resonance effect

    1Thank You

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    • Posted by Kartik Raina 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Komal Diksha 8 years, 1 month ago

    Due to the presence of voids in them.

    1Thank You

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    • Posted by Shivi Rajput 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Ishu Chouhan 8 years, 1 month ago

    Yes ncert hi pado aap to ,be positive and best of luck?????

    1Thank You

    Rochie Joshi 8 years, 1 month ago

    But read the theory completely .

    1Thank You

    Rochie Joshi 8 years, 1 month ago

    Ya its sufficent yr .i asked my teacher about it . ncert have every type of questions.

    1Thank You

    Radhika Tyagi 8 years, 1 month ago

    No

    1Thank You

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    • Posted by Sohan Mahajan 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Anshika Tomar 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Tannu Pal 8 years, 1 month ago

    Ammonium chloride and Zn cl in form of a paste is stored at anode

    1Thank You

    Ashwani Kumar Maurya 8 years, 1 month ago

    Ammonium chloride& zinc chloride...

    3Thank You

    ANSWER

    • Posted by Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Radhika Tyagi 8 years, 1 month ago

    The reaction won't occur at room temperature

    0Thank You

    Radhika Tyagi 8 years, 1 month ago

    The *ans is incorrect as the conditions are not specified

    2Thank You

    Nayan Kumar 8 years, 1 month ago

    Bromobenzene + NaOH ------ phenol + NaBr

    1Thank You

    ANSWER

    • Posted by Sangeeta Rathore 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Zyxw Abcd 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Radhika Tyagi 8 years, 1 month ago

    Do name reaction and distinction first

    1Thank You

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    • Posted by Singh Singh 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Punit Poonia 8 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Punit Poonia 8 years, 1 month ago

    Atoms- All the matter in the universe is made of tiny particles called Atoms. There are 92 different kinds of atoms. Element - when matter is made of only one kind of atom then it is called an Element. The fundamental substance which consists of only one kind of atom. Molecule - Smallest unit of chemical compound. When 2 or more atoms of same element combine together then we call them Molecule. Compound- Substance which are made by the combination of two or more kinds of elements are known as Compounds.

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