No products in the cart.

Ask questions which are clear, concise and easy to understand.

Ask Question

    • Posted by Ananya Saw 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Kalindi Yadav 7 years, 10 months 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 7 years, 10 months 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.

    1Thank You

    ANSWER

    • Posted by Anil Soy 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Kashish Bhadana 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Kalindi Yadav 7 years, 10 months 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.

    0Thank You

    ANSWER

    • Posted by Daneet Randhawa 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Deepawali Parmar 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Kalindi Yadav 7 years, 10 months ago

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

    0Thank You

    Yuthika Yadav 7 years, 10 months ago

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

    0Thank You

    ANSWER

    • Posted by Sonu Sorout 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Shobhitha Shetty 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Shivanshu Yadav 7 years, 10 months 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.

    1Thank You

    ANSWER

    • Posted by Yogesh Khetwal 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Kalindi Yadav 7 years, 10 months 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.

    0Thank You

    ANSWER

    • Posted by Shivani Sharma 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Sudarson Sengupta 7 years, 10 months ago

    Ptc: p-toulouenesulphonylchloride

    3Thank You

    ANSWER

    • Posted by Virangna Roy 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Shivi Rajput 7 years, 10 months ago

    Go through NCERT page no 45

    3Thank You

    ANSWER

    • Posted by Sidharth Verma 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Kalindi Yadav 7 years, 10 months 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)

    1Thank You

    ANSWER

    • Posted by Santosh Kumar 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Sudarson Sengupta 7 years, 10 months ago

    No hydrogen present

    0Thank You

    Abhishek Soni 7 years, 10 months ago

    Absence of active hydrogen

    1Thank You

    ANSWER

    • Posted by Himani Joshi 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Sohaib Akhtar 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Abhishek Soni 7 years, 10 months ago

    Part 2 page 336 lastvthird line

    0Thank You

    Astha Srivastava 7 years, 10 months ago

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

    2Thank You

    ANSWER

    • Posted by Jyoti Yadav 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Prerna Pahwa 7 years, 10 months ago

    Command on reagents

    0Thank You

    Jin Kazama 7 years, 10 months ago

    Sorry yha sub students hai

    0Thank You

    ANSWER

    • Posted by Nagma Khatoon Nagma Khatoon 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Jin Kazama 7 years, 10 months ago

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

    1Thank You

    ANSWER

    • Posted by Akash Chakraborty 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Ishu Chouhan 7 years, 10 months ago

    Ncert ke sare questions kar lo

    0Thank You

    Ishu Chouhan 7 years, 10 months ago

    Ncert ke reasoning questions pad lo

    0Thank You

    ANSWER

    • Posted by Ishu Chouhan 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Ashwani Kumar Maurya 7 years, 10 months ago

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

    1Thank You

    ANSWER

    • Posted by Ishu Chouhan 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Priya Prakash S 7 years, 10 months ago

    3

    1Thank You

    Aayisha Azeez 7 years, 10 months ago

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

    2Thank You

    Rochie Joshi 7 years, 10 months ago

    3

    1Thank You

    Ashwani Kumar Maurya 7 years, 10 months ago

    Tribasic..

    2Thank You

    ANSWER

    • Posted by Ruchismita Tanty 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Amit Katariya 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Priya Prakash S 7 years, 10 months ago

    Chlorobenzene

    1Thank You

    Kanak Tiwari 7 years, 10 months ago

    Yeah it may be

    0Thank You

    Ashwani Kumar Maurya 7 years, 10 months ago

    I think chlorobenzene..

    1Thank You

    Kanak Tiwari 7 years, 10 months 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

    ANSWER

    • Posted by Kartik Raina 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Komal Diksha 7 years, 10 months ago

    Due to the presence of voids in them.

    1Thank You

    ANSWER

    • Posted by Shivi Rajput 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Ishu Chouhan 7 years, 10 months ago

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

    1Thank You

    Rochie Joshi 7 years, 10 months ago

    But read the theory completely .

    1Thank You

    Rochie Joshi 7 years, 10 months ago

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

    1Thank You

    Radhika Tyagi 7 years, 10 months ago

    No

    1Thank You

    ANSWER

    • Posted by Sohan Mahajan 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Anshika Tomar 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Tannu Pal 7 years, 10 months ago

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

    1Thank You

    Ashwani Kumar Maurya 7 years, 10 months ago

    Ammonium chloride& zinc chloride...

    3Thank You

    ANSWER

    • Posted by Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Radhika Tyagi 7 years, 10 months ago

    The reaction won't occur at room temperature

    0Thank You

    Radhika Tyagi 7 years, 10 months ago

    The *ans is incorrect as the conditions are not specified

    2Thank You

    Nayan Kumar 7 years, 10 months ago

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

    1Thank You

    ANSWER

    • Posted by Sangeeta Rathore 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Zyxw Abcd 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Radhika Tyagi 7 years, 10 months ago

    Do name reaction and distinction first

    1Thank You

    ANSWER

    • Posted by Singh Singh 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Punit Poonia 7 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Punit Poonia 7 years, 10 months 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.

    3Thank You

    ANSWER

    myCBSEguide App

    myCBSEguide

    Trusted by 1 Crore+ Students

    Install Now

    Test Generator

    Test Generator

    Create papers online. It's FREE.

    Try Now

    CUET Mock Tests

    CUET Mock Tests

    75,000+ questions to practice only on myCBSEguide app

    Install Now
    Google Play

    Download myCBSEguide App

    All Courses

    Other Websites

    CBSE Courses

    Resources

    Corporate

    NCERT Solutions

    CBSE Sample Papers

    All Content and Intellectual Property is under Copyright Protection | myCBSEguide.com ©2007-2026