Permanent hardness of water may be removed by the addition of
sodium carbonate
alum
potassium permanganate
lime
Additional Questions
|
Soda water contains |
Answer |
|
The most important ore of aluminium is |
Answer |
|
Most soluble in water is |
Answer |
|
Which of the following was to be discovered first in the chromospheres of the sun? |
Answer |
|
Which of the following is in liquid form at room temperature? |
Answer |
|
Sodium metal is kept under |
Answer |
|
Which of the following are the ingredients of gun metal? |
Answer |
|
From which mineral is radium obtained? |
Answer |
|
What is laughing gas? |
Answer |
|
Actinides are the elements with atomic numbers from |
Answer |