EASY
10th CBSE
IMPORTANT
Earn 100

Why is a solution of sodium carbonate neutral to litmus?

Note: This question given in the book seems to have error and the modified question should be as given below.

Why is a solution of sodium carbonate shows alkalinity to litmus?

Important Questions on Compounds of Common Use

EASY
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 6 - Compounds of Common Use>EXERCISES>Q 1
How is common salt obtained from sea water? Name the impurities present in it.
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 6 - Compounds of Common Use>EXERCISES>Q 2
How is rock salt exploited to obtain common salt?
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 6 - Compounds of Common Use>EXERCISES>Q 3
Describe how NaOH is prepared commercially.
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 6 - Compounds of Common Use>EXERCISES>Q 4
What are the different uses of washing soda?
HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 6 - Compounds of Common Use>EXERCISES>Q 5
Describe the principle for the manufacture of washing soda from common salt. How does washing soda react with the following?
(a) H2SO4
(b) CO2
HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 6 - Compounds of Common Use>EXERCISES>Q 6
What is baking soda? How is it obtained from sodium chloride? Mention any two uses of baking soda.
HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 6 - Compounds of Common Use>EXERCISES>Q 7

A white amorphous powder is widely used in textile industry and as a disinfectant. What can it be? Give the principle of its preparation on a large scale. How does it react with the following substances?

(a) HCl

(b) COCl2 solution

(c) Acidified aqueous solution of KI