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

Explain the following reaction with the balanced equation. Zinc carbonate is heated strongly in limited supply of air - Science and Technology 1

Advertisements
Advertisements

प्रश्न

Explain the following reaction with the balanced equation.

Zinc carbonate is heated strongly in limited supply of air

टीपा लिहा

उत्तर

Zinc carbonate is heated strongly in a limited supply of air to convert it to zinc oxide. This process is called calcination.

\[\ce{\underset{\text{Zinc carbonate}}{ZnCO_{3(s)}} ->[Heat] \underset{\text{Zinc oxide}}{ZnO_{(s)}} + \underset{\text{Carbon dioxide}}{CO_2↑}}\]

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 8: Metallugy - Explain the following reactions with the balanced equations

APPEARS IN

एससीईआरटी महाराष्ट्र Science and Technology 1 [English] 10 Standard SSC
पाठ 8 Metallugy
Explain the following reactions with the balanced equations | Q 12

संबंधित प्रश्‍न

In the extraction of aluminium: Why is it necessary to replace anodes time to time?


Name one metal which is extracted by reduction with heat alone.


A zinc ore on heating in air forms sulphur dioxide. Describe briefly any two stages involved in the conversion of this concentrated ore into zinc metal.


Define the terms gangue.


The metal which can be extracted from the bauxite ore is:
(a) Na
(b) Mn
(c) Al
(d) Hg


Give the principles of the hydrolytic method.


State why aluminium is extracted from its oxide by electrolysis while copper, lead, iron by reducing agents and mercury and silver by thermal decomposition.


Define the term : Flux


Compare the process of calcination and roasting.


How are metals refined by the electrolytic methods?


Name:
The allotrope of the non-metal carbon which conducts electricity.


Arrange the metals of copper, iron, magnesium, sodium and zinc in the decreasing order of reactivity.


State the property of the metal being utilized in the following :

Use of metal Property
Zinc in Galvanization  
Aluminium in Thermite welding  

State three objectives achieved during the roasting of ores.


Observe the given figure of reactivity series of metals and answer the following questions:


                    Reactivity series of metals

  1. Name two metals which react with water.
  2. Name two moderately reactive metals.
  3. Name the most highly reactive metal and the most less reactive metal.

If Cu, Fe, Zn, Al elements are arranged in increasing order of their reactivity then the correct order would be which of the following?


Explain the following reaction with the balanced equation.

Ferric oxide is reacted with aluminium.


Explain concept with example/explain with the help of a balanced equation.

Calcination


2 mL each of concentrated HCl, HNO3 and a mixture of concentrated HCl and concentrated HNO3 in the ratio of 3 : 1 were taken in test tubes labelled as A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube C respectively. The metal could be


The given reaction shows one of the processes to extract the metals like Iron and Manganese.

\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]

Identify the substance oxidised and reduced in the above reaction.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×