HARD
8th Maharashtra Board
IMPORTANT
Earn 100

Identify the following solutions, whether they are acidic or alkali.

Solution Change in indicator Acid/ Base
Litmus Phenolphthalein Methyl orange
1.  ___ No change  ___  
2.  ___ ___ Orange colour turns red  
3.  Red litmus blue ___ ____  

Important Questions on Introduction to Acid & Base

MEDIUM
8th Maharashtra Board
IMPORTANT
General Science>Chapter 12 - Introduction to Acid & Base>Exercises>Q 1
Write chemical names from the given formulae:
H2SO4, Ca(OH)2, HCl, NaOH, KOH, NH4OH.
MEDIUM
8th Maharashtra Board
IMPORTANT
General Science>Chapter 12 - Introduction to Acid & Base>Exercises>Q 4
Which acid is used for getting chloride salt?
HARD
8th Maharashtra Board
IMPORTANT
General Science>Chapter 12 - Introduction to Acid & Base>Exercises>Q 4
The label on the bottle of chemical is spoiled. How will you find out whether the chemical is acidic or not?
MEDIUM
8th Maharashtra Board
IMPORTANT
General Science>Chapter 12 - Introduction to Acid & Base>Exercises>Q 5
Why indicator does not get affected by salt?
MEDIUM
8th Maharashtra Board
IMPORTANT
General Science>Chapter 12 - Introduction to Acid & Base>Exercises>Q 5
Which substances are produced by neutralisation process?
HARD
8th Maharashtra Board
IMPORTANT
General Science>Chapter 12 - Introduction to Acid & Base>Exercises>Q 5
Which are the industrial uses of acids?
MEDIUM
8th Maharashtra Board
IMPORTANT
General Science>Chapter 12 - Introduction to Acid & Base>Exercises>Q 7

Match the pairs.

Group A Group B
1. Tamarind a. Acetic acid
2. Curd b. Citric acid
3. Lemon c. Tartaric acid
4. Vinegar d. Lactic acid
MEDIUM
8th Maharashtra Board
IMPORTANT
General Science>Chapter 12 - Introduction to Acid & Base>Exercises>Q 8
Oxides of metals are acidic in nature.