CHEMISTRY NOTES CLASS - Xth

CHEMISTRY CLASS - XTH ALL CHAPTERS NOTES

➡️Chapter - 01 

I) Chemical Reactions and Equations click below 👇


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Type of chemical reactions

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  Type of chemical reactions 1.) Combination Reaction :- When two or more substances (elements or compounds) combine to form a single product. Whose properties are entirely different from the original substance.  Ex -                 A  +   B    ->    C i. When coal burns in presence of air it produce carbon dioxide gas .  C (g) + O2(g) -> CO2 (g)  ii. When hydrogen combines with oxygen it forms water.  H2 (g) + O2(g) -> H2O(l)  Note :- In this reaction heat is produced.  ➡️Exothermic reactions :- The reactions, in which heat is generated in course of formation of product, are Exothermic reaction.  Ex-  a.) CH4 (g) + 2O2(g)  -> CO2 (g) +2H2O (g) +        energy  2) Decomposition Reactions :-  In this reaction, a substance is broken down into two or more new substances whose properties are different from the original s...
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EXPERIMENTAL VERIFICATION OF OHM'S LAW

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  EXPERIMENTAL VERIFICATION OF OHM'S LAW OBJECTIVE:-  Verification of ohm's law  EQUIPMENT REQUIRED :- A battery, an ammeter, voltmeter, rheostat, plug key, coil, of unknown substance, connecting wire etc.  THEORY :- Ohm's law deal with the relationship between voltage (p.d) and current in an ideal conductor.  This relationship states that -  The p. d.(voltage) across an ideal conductor is directly proportional the current through it.  Ohm's law given by  V=IR Where,  V= potential difference  I= current  R= constant (Resistance)  CIRCUIT DIAGRAM :-  PROCEDURE:- 1. The circuit is connected as per the circuit diagram. 2. The plug key is inserted and the rheostat is adjusted so that a definite amount of current (I) flows in the circuit. This value of current is recorded. 3. As the current flows through the unknown resistance a p. d. is developed which is read from voltmeter. 4. The procedure is again adjusted to a different v...
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Life process exemplar questions and answers

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