English
Maharashtra State BoardSSC (English Medium) 10th Standard

Explain the following reaction with the balanced equation. Zinc oxide is treated with carbon - Science and Technology 1

Advertisements
Advertisements

Question

Explain the following reaction with the balanced equation.

Zinc oxide is treated with carbon

Short/Brief Note
Advertisements

Solution

Zinc oxide is reduced to zinc by heating it with carbon.

\[\ce{\underset{\text{Zinc oxide}}{ZnO_{(s)}} + \underset{\text{Carbon}}{C_{(s)}} ->[Heat] \underset{\text{Zinc}}{Zn_{(s)}} + \underset{\text{Carbon monoxide}}{CO↑}}\]

shaalaa.com
  Is there an error in this question or solution?
Chapter 8: Metallugy - Explain the following reactions with the balanced equations

APPEARS IN

SCERT Maharashtra Science and Technology 1 [English] 10 Standard SSC
Chapter 8 Metallugy
Explain the following reactions with the balanced equations | Q 13

RELATED QUESTIONS

Metallic oxides of zinc, magnesium and copper were heated with the following metals.

Metal Zinc Magnesium Copper
Zinc oxide
Magnesium oxide
Copper oxide

In which cases will you find displacement reactions taking place?


Which of the following pairs will give displacement reactions?


Why do gold ornaments look new even after several years of use?


Give the name and chemical formula of one ore of copper.


Define the term mineral.


Name one ore of copper (other than cuprite). Which compound of copper is present in this ore? Also, write its chemical formula.


Calamine ore can be used to extract one of the following metals. This metal is:
(a) copper
(b) mercury
(c) aluminium
(d) zinc


Name the anode, the cathode and the electrolyte used in the electrolytic refining of impure copper.


How an ore is concentrated by froth floatation process?


Which method of refining is used to get 99.8% pure aluminium?


Name the following:
A steel grey coloured solid non-metal.


Mercury, silver, gold are highly reactive metals.


Explain the following reaction with the balanced equation.

Chlorine dissolved in water


Explain in brief types of extraction of less reactive metals according to their reactivity.


Answer the questions on the following passage.

The minerals from which the metal can be separated economically are called ores. Ores contain many types of impurities such as soil, sand and rocky substances along with metal compounds. These impurities are called gangue.
Metals can be extracted from their ores by means of various methods of separation. The process of extraction of metal in a pure state from the ores is also a part of metallurgy.
Ores are taken out from the mines and the gangue is usually separated from the ore at the site itself by various methods. Then the ores are carried out to the place where metals are produced. Here metals are extracted in pure form. Then metals are further purified by different methods of purification. This entire process is called metallurgy. Most metals being reactive do not occur in nature in the free state but are found in combined state as their salts such as oxides, carbonates, sulphides, and nitrates. however, the most unreactive metals that are not affected by air, water and other natural factors like silver, gold, platinum, generally occur in a free state. The compounds of metals that occur in nature along with the impurities are called minerals.

  1. What are ores?
  2. Which processes are involved in the branch of metallurgy? What is metallurgy?
  3. Which metals are found in a free state?
  4. In what forms are metals found in combined state?
  5. What is gangue?

Oxides of moderately reactive metals like Zinc, Iron, Nickel, Tin, Copper, etc. are reduced by using:


Iqbal treated a lustrous, divalent element M with sodium hydroxide. He observed the formation of bubbles in reaction mixture. He made the same observations when this element was treated with hydrochloric acid. Suggest how can he identify the produced gas. Write chemical equations for both the reactions.


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×