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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 8

Complete and Balance the Following Chemical Equations: H_2s + Ci_2→

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प्रश्न

Complete and balance the following chemical equations:

`"H"_2"S"` + `"CI"_2`  `→`  

एक पंक्ति में उत्तर
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उत्तर

`"H"_2"S"`   + `"CI"_2`  `→`  2HCI + S

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अध्याय 6: Chemical Reactions - Exercise 1 [पृष्ठ ७३]

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सेलिना Concise Chemistry [English] Class 8 ICSE
अध्याय 6 Chemical Reactions
Exercise 1 | Q 6.2 | पृष्ठ ७३

संबंधित प्रश्न

State whether the following statement is true or false. In case a statement is false, write the corrected statement.

Iron pipes coated with zinc do not get rusted easily.


Fill in the blank

 A catalyst either ................or ............... the rate of a chemical change but itself remains ............... at the end of the reaction.


What are the characteristics of a chemical reaction ? A chemical reaction is characterised by an irreversible change in which a new substance is formed.


Complete the statement by filling the gap using an  appropriate term from the terms given in the bracket.

(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)

An ______ is drawn in between the reactants and products while writing the equation for a chemical reaction.


Explain by writing a word equation.

Bubbles are seen on adding lemon juice to baking soda.


Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.

Hydrogen chloride


When hydrogen burns in oxygen, water is formed; when electricity is passed through water, hydrogen and oxygen are given out. Name the type of chemical change involved in the two cases.


Name: A brown gas 


Represent the addition of dilute sulphuric acid to zinc by means of a chemical equation. State the function of the arrow between the reactants and products.


Select the correct answer for the following options:

The basic gas obtained when two gases react in presence of a catalyst and the reaction is exothermic.


Give a word equation for the following reaction.

A compound which on heating shows – colour change from brown to yellow.


State the following reaction represent oxidation or reduction.

\[\ce{H->H+}\]


Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to calcium carbonate.


Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.

Lead nitrate.


Explain the following statement: Digestion is a chemical change.


If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.

Do you think formation of rust from iron is a chemical change?


A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.

Write a word equation for the chemical change, if any.


The chemical name of baking soda is sodium bicarbonate.


Write five changes in the characteristics of a substance that can take place during a chemical change. 


Photosynthesis is a chemical charge. Justify your answer.


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