English
Maharashtra State BoardSSC (English Medium) 8th Standard

Metal corrodes due to salts.

Advertisements
Advertisements

Question

Metal corrodes due to salts.

Options

  • True

  • False

MCQ
True or False
Advertisements

Solution

This statement is True.

shaalaa.com
  Is there an error in this question or solution?
Chapter 12: Introduction to Acid and Base - Exercise [Page 88]

APPEARS IN

Balbharati General Science [English] Standard 8 Maharashtra State Board
Chapter 12 Introduction to Acid and Base
Exercise | Q 8.3 | Page 88
Balbharati General Science Integrated [English] Standard 8 Maharashtra State Board
Chapter 12 Introduction to Acid and Base
Exercises | Q 8. c. | Page 84

RELATED QUESTIONS

Match the important chemicals given in Column (A) with the chemical formulae given in Column (B)

Column (A) Column (B)
(a) Plaster of Paris Ca(OH)2
(b) Gypsum CaSO4. 1/2 H2O 
(c) Bleaching Powder   CaSO4.2H7O
(d) Slaked Lime CaOCl2 

On adding phenolphthalein indicator to a colourless solution, no change is observed. What is the nature of this solution?


State whether the following statement is true or false. Correct the false statement.

Lime water turns red litmus blue.


Look at figure which shows solutions taken in test tubes A, B, C and D. What colour is expected when a piece of red litmus paper is dropped in each test tube? Nature of the solutions is given in the table for your help.

Test tube Nature of Solution Change in colour
of red litmus
A Neutral  
B Basic  
C Acidic  
D Neutral  

Boojho, Paheli and their friend Golu were provided with a test tube each containing China rose solution which was pink in colour. Boojho added two drops of solution ‘A’ in his test tube and got dark pink colour. Paheli added 2 drops of solution ‘B’ to her test tube and got green colour. Golu added 2 drops of solution ‘C’ but could not get any change in colour. Suggest the possible cause for the variation in their results.


Match the following:

1. Sulphuric acid a. Weak base
2. Sodium hydroxide b. Strong acid
3. Acetic acid c. Strong base
4. Ammonium hydroxide d. Weak acid

All bases are alkalis but all alkalis are not bases.


What is the role of toothpaste in the prevention of tooth decay?


Bases ionise in water to form ______ ions.


Which of the following solution is soapy to touch?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×