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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Write a chemical equation for the following event. Zinc oxide is dissolved in dilute hydrochloric acid. - Science and Technology 1

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प्रश्न

Write a chemical equation for the following event.

Zinc oxide is dissolved in dilute hydrochloric acid.

थोडक्यात उत्तर
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उत्तर

Zinc Oxide is an inorganic compound with formula ZnO. It is insoluble in water. When Zinc oxide reacts with hydrochloric acid it forms zinc chloride and water. It also leads to the formation of small bubbles of hydrogen. This is a double displacement reaction.

Chemical Equation: 

\[\ce{ZnO + 2HCl -> ZnCl2 + H2O}\]

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पाठ 8: Metallurgy - Exercises [पृष्ठ १०९]

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बालभारती Science and Technology 1 [English] Standard 10 Maharashtra State Board
पाठ 8 Metallurgy
Exercises | Q 9.5 | पृष्ठ १०९

संबंधित प्रश्‍न

Give one example each of which illustrates the following characteristics of a chemical reaction:

evolution of a gas


What do you observe when silver nitrate is added to a solution of sodium chloride?


How will you obtain Magnesium oxide from magnesium.

Also give balanced equations for the reactions


How will you obtain Zinc chloride from zinc.

Also give balanced equations for the reactions


Write the chemical equation for the event.

A reaction was brought about between ferric oxide and aluminium.


Write chemical equation for the event.

Electrolysis of alumina is done.


With reference to Water explain with suitable examples of how the reactivity of the metals could be differentiated.


Give a balanced equation for the reversible catalytic reaction involving nitrogen as one of the reactants.


Give a balanced equation for the following type of reaction:

A displacement reaction in which a metal above hydrogen in the reactivity series, displaces another metal from the solution of its compound.


Classify the following metals based on their reactivity.
Cu, Zn, Ca, Mg, Fe, Na, Li, Hg

More reactive Moderately reactive Less reactive
     
     

Explain the following reaction with the balanced equation.

Sodium burns in air


Explain the following reaction with the balanced equation.

Reaction of aluminium with oxygen


Explain the following reaction with the balanced equation.

Sulphur burns in air


Which among the following alloys contain mercury as one of its constituents?


A metal A, which is used in thermite process, when heated with oxygen gives an oxide B, which is amphoteric in nature. Identify A and B. Write down the reactions of oxide B with HCl and NaOH.


A metal that exists as a liquid at room temperature is obtained by heating its sulphide in the presence of air. Identify the metal and its ore and give the reaction involved.


An element A reacts with water to form a compound B which is used in white washing. The compound B on heating forms an oxide C which on treatment with water gives back B. Identify A, B and C and give the reactions involved.


A metal M does not liberate hydrogen from acids but reacts with oxygen to give a black colour product. Identify M and black coloured product and also explain the reaction of M with oxygen.


Explain the following

  1. Reactivity of Al decreases if it is dipped in HNO3
  2. Carbon cannot reduce the oxides of Na or Mg
  3. NaCl is not a conductor of electricity in solid state whereas it does conduct electricity in aqueous solution as well as in molten state
  4. Iron articles are galvanised.
  5. Metals like Na, K, Ca and Mg are never found in their free state in nature.

Metal ‘A’ has electronic configuration 2, 8, 1 and metal ‘B’ has electronic configuration 2, 8, 8, 2. Out of these, which metal is more reactive? Write the reaction of this metal with dilute HCl acid.


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