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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Balance the Following Equation. Also Name the Product Formed. Zn + Hci → Znci _2 +H_2

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प्रश्न

Balance the following equation. Also name the product formed. 

`"Zn" + "HCI" →  "ZnCI" _2 + "H"_2`

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उत्तर

`"Zn" + "HCI" →  "ZnCI" _2 + "H"_2`  Zinc chloride, Hydrogen 

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पाठ 5: Language of Chemistry - Additional questions

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एस.पी. सिंह Concise Chemistry [English] Class 7 ICSE
पाठ 5 Language of Chemistry
Additional questions | Q 5.1

संबंधित प्रश्‍न

Balance the following equation:

\[\ce{Na + O2 -> Na2O}\]


Give one example of a chemical reaction characterised by the formation of a precipitate.


State one characteristic of the chemical reaction which takes place when dilute sulphuric acid is added to barium chloride solution.


Complete the following equation:

CH2 + H5OH `("Hot Conc." H_2SO_4)/`>


Write the balanced chemical equation of the following reaction.

sodium chloride + manganese dioxide + sulphuric acid → sodium hydrogen sulphate  + manganese sulphate + water + chlorine.


Answer the following question.
What is observed when 2 mL of dilute hydrochloric acid is added to 1 g of sodium carbonate taken in a clean and dry test tube? Write a chemical equation for the reaction involved.


A chemical reaction is generally accompanied by certain external indications or characteristics. These include – change of – (a) colour (b) state (c) smell (d) evolution of gas (e) formation of precipitate (f) evolution or absorption of heat. With reference to change of colour – state the change in colour seen when the following are heated –  lead [IV] oxide.


Give an example of a chemical equation in which two reactants form:

two product


Give a balanced equation by partial equation method, [steps are given below].

The reaction of excess ammonia with chlorine – Ammonia as a reducing agent

  1. Ammonia first reacts with chlorine to give hydrogen chloride and nitrogen.
  2. Hydrogen chloride then further reacts with excess ammonia to give ammonium chloride.

Dil. HCl is added to Zn granules. How will you prove that chemical change has taken place here? Support your response with two arguments.


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