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

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

Advertisements
Advertisements

प्रश्न

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

Roasting

टीपा लिहा
Advertisements

उत्तर

  1. The process of heating of sulphide ores strongly in excess of air to convert it into respective oxide is called roasting.
  2. For example, zinc sulphide is heated strongly in excess of air to convert it to zinc oxide.
    \[\ce{\underset{\text{Zinc sulphide}}{2ZnS_{(s)}} + 3O_{2(g)} -> \underset{\text{Zinc oxide}}{2ZnO_{(s)}} + \underset{\text{Sulphur dioxide}}{2SO_2↑}}\]
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 8: Metallugy - Explain concept with example/explain with the help of balanced equation [पृष्ठ ३१]

APPEARS IN

एससीईआरटी महाराष्ट्र Science and Technology Part 1 [English] Standard 10 Maharashtra State Board
पाठ 8 Metallugy
Explain concept with example/explain with the help of balanced equation | Q 4 (i) | पृष्ठ ३१

संबंधित प्रश्‍न

Write the composition of the alloy called bronze.


Name one metal which is extracted by:

Electrolytic reduction.


Describe with one example, how moderately reactive metals (which are in the middle of reactivity series) are extracted.


Name three other metals which are extracted in a manner similar to sodium.


Explain how, mercury is extracted from its sulphide ore (cinnabar). Give equations of the reactions involved.


The metal which can be extracted from the bauxite ore is ______.


An important ore of zinc metal is ______.


Calamine ore can be used to extract one of the following metals. This metal is:


During galvanisation, iron metal is given a thin coating of one of the following metals. This metal is:


Calamine ore can be converted into zinc oxide by the process of ______.


Metals X and Y can be recovered from the anode mud left behind after the electrolytic refining of copper metal. The coins made of metal X look new even after several years of use but the coins made of metal Y lose their shine gradually and get blackened soon. When metal X is alloyed with a small amount of metal Y, it becomes hard and hence suitable for making ornaments. What are metals X and Y? Also state the colour of metal X.


State one observation for each of the following  : 
Copper sulphate solution is electrolysed using copper electrodes. 


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


Correct the following statement :
Copper reacts with nitric acid to produce nitrogen dioxide.


Draw a well-labelled diagram of extraction of Aluminium. Write the anode reaction in electrolytic reduction of Alumina.


Iron is _______.


Aluminium oxide is _______ oxide.


Explain the following reaction with the balanced equation.

Sodium aluminate reacts with water


An alloy is


Give the reaction involved during extraction of zinc from its ore by

  1. roasting of zinc ore
  2. calcination of zinc ore

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×