English
Maharashtra State BoardSSC (English Medium) 10th Standard

Complete flow chart given below. Prevention of corrosion

Advertisements
Advertisements

Question

Complete flow chart given below.

Chart
Advertisements

Solution

shaalaa.com
  Is there an error in this question or solution?
Chapter 8: Metallugy - Complete flow chart given below

APPEARS IN

RELATED QUESTIONS

What is an alloy?


Give two examples of alloys with their chemical composition.


 Which metals do not corrode easily?


Choose the correct answer from the options given below:

Heating an ore in a limited supply of air or in the absence of air at a temperature just below its melting point is known as

A. Smelting

B. Ore-dressing

C. Calcination

D. Bessemerisation


What is anodising? Give its applications.


What type of chemical reaction is involved in the corrosion of iron?


What is meant by galvanisation? Why is it done?


Explain why, iron sheets are coated with zinc.


In one method of rust prevention, the iron is not coated with anything. Which is this method?


Fill in the following blank with suitable word:

The corrosion of iron is called ................


Explain why, through aluminium is more reactive than iron, yet there is less corrosion of aluminium when both are exposed to air.


Give the constituents and one use of brass.


Name the metal which is a constituent of blood pigment?


Explain with reason:

Roasting is carried out on sulphide ores and not on carbonate ores.


Give reason.

A wooden article should be polished.


Observe the following picture and answer the following questions:

  1. What is rust?
  2. Write the chemical formula of rust.
  3. Write the reaction of oxidation of iron at the anode.
  4. Write the reaction of oxidation of iron at the cathode.
  5. What is corrosion?

 _______ forms a green colour in the water.


When one of the metals in an alloy is mercury the alloy is called _______.


Pressure cooker : Anodizing : : Silver plated spoons : _______


Write the name.

An alloy of copper and tin-


Write the name.

Method used to prevent corrosion of copper.


Write scientific reason.

Coins are made from metals and alloys.


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

Corrosion


What is rust?


Observe the following figure and write the answer of the question.

  1. Which process is shown in the figure?
  2. Explain the chemical reaction shown in the figure.
  3. Write the reactions on anode and cathode.

Give preventive methods by giving examples of corrosion?


The process of coating the surface of the metal with a thin layer of zinc is called ______


Give the equation for the formation of rust.


Galvanisation is a method of protecting iron from rusting by coating it with a thin layer of ____________.


Iron pillar near the Qutub Minar in Delhi is famous for the following facts. Which of these facts is responsible for its long stability?


Galvanisation is a process used to prevent the rusting of which of the following?


Explain the following:

Lime water turns milky on passing carbon dioxide gas into it.


Explain the chemical reactions in rusting of iron.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×