English

State Whether the Statement Given Below is True Or False. If False Write the Correct Statement. Either Oxygen Or Moisture is Essential for Rusting.

Advertisements
Advertisements

Question

State whether the statement given below is true or false. If false write the correct statement.

Either oxygen or moisture is essential for rusting.

Options

  • True

  • False

MCQ
True or False
Advertisements

Solution

True.

shaalaa.com
  Is there an error in this question or solution?
Chapter 6: Metals and Non-metals - Objective Type Questions

APPEARS IN

Viraf J. Dalal Simplified Middle School Chemistry [English] Class 7 ICSE
Chapter 6 Metals and Non-metals
Objective Type Questions | Q 5.5

RELATED QUESTIONS

Write two methods of preventing the rusting of iron.


Explain the term “corrosion” with an example. Write a chemical equation to show the process of corrosion of iron.


What special name is given to the corrosion of iron?


Tiffin boxes are electroplated with ______ but car bumpers are electroplated with ______ to protect them from rusting.


Brass is an alloy of ______.


No chemical reaction takes place when granules of a rusty-brown solid A are mixed with the powder of another solid B. However, when the mixture is heated, a reaction takes place between its components. One of the products C is a metal and settles down in the molten state while the other product D floats over it. It was observed that the reaction is highly exothermic.

  1. What could the solids A and B be?
  2. What are the products C and D most likely to be?
  3. Write the chemical equation for the reaction between A and B leading to the formation of C and D. Mention the physical states of all the reactants and products in this equation and indicate the heat change which takes place.
  4. What is the special name of such a reaction? State one use of such a reaction.
  5. Name any two types of chemical reactions under which the above reaction can be classified.

Corrosion can be an advantage in some case.Explain ?


Give reason.

An iron article should be given a coat of paint


State whether the following statement is true or false:

Ships suffer a lot of damage though they are painted.


Give scientific reasons.

Silver amalgam is used for filling dental cavities.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×