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Balance the Following Chemical Equation: Mno2 + Hci → Mnci2 + Ci2 + H2o - Science

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प्रश्न

Balance the following chemical equation:

MnO2  +  HCI  →  MnCI2  +  CI2  +  H2O

 

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उत्तर

MnO2 + 4HCl → MnCl2 + Cl2 + 2H2O

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पाठ 1: Chemical Reactions and Equations - Exercise 1 [पृष्ठ २०]

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लखमीर सिंह Chemistry (Science) [English] Class 10
पाठ 1 Chemical Reactions and Equations
Exercise 1 | Q 24.2 | पृष्ठ २०

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संबंधित प्रश्‍न

Complete and balance the following equation:

NaOH  + ............     Na2 SO4    + H2O

 


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"An aqueous solution of ferrous sulphate reacts with an aqueous solution of sodium hydroxide to form a precipitate of ferrous hydroxide and sodium sulphate remains in solution."


A white precipitate will be formed if we add common salt solution to:
(a) Ba(NO3)2 solution
(b) KNO3 solution
(c) AgNO3 solution
(d) Mg(NO3)2 solution


Write your observation for the following chemical reaction and name the product formed:

When sugar is heated.


The step(s) necessary for determining the percentage of water absorbed by raisins is/are:


Balance the following equation:

Pb3O4 + HCl → PbCl2 + H2O + Cl2


Write the balanced chemical equations of the following reactions.

chlorine + sulphur dioxide + water →  sulphuric acid + hydrogen chloride


Write the balanced chemical equation of the following reaction.

potassium dichromate + sulphuric acid → potassium sulphate + chromium sulphate + water + oxygen.


Match column A with column B. 

Column A Column B
(a) Blue salt changes to white and then black (i) Ammonium dichromate
(b) Orange coloured compound changes to green. (ii) Iodine
(c) Red compound changes to brown and then yellow. (iii) Zinc Nitrate
(d) White to yellow when hot and white when cold. (iv) Copper sulphate
(e) Violet solid changes to violet vapours. (v) Red Lead

Define: Endothermic reaction 


1 g of copper powder was taken in a China dish and heated. What change takes place on heating? When hydrogen gas is passed over this heated substance, a visible change is seen in it. Give the chemical equations of reactions, the name and the color of the products formed in each case.


Write word equation for the following chemical reaction given below. Also state the observation seen in the case.

\[\ce{ZnCo3->[\triangle] ZnO + CO2}\]


Balance the following simple equation:

H2S   +   Cl2  →  S  +  HCl 


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Fe2O3  +  H2  → Fe  +  H2O


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NaOH  +  Cl2  →  NaCl  +   NaClO  +  H2


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NaHCO3  +  H2SO4  →  Na2SO4  +  H2O  +  CO2 


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Match the columns.

  Reactants Products Types of chemical reaction
1. MgH2 Mg + H2 Endothermic
2. 2H2S + SO2 3S + 2H2O Oxidation
3. CaO + H2O Ca(OH)2 + heat Exothermic
        Redox

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