Advertisements
Advertisements
प्रश्न
What do you observe when Washing soda is exposed to air ?
Advertisements
उत्तर
Washing soda (Na2CO3.10H2O) is a white crystalline substance and on exposure to air it gets changed to white powder.
APPEARS IN
संबंधित प्रश्न
Give two examples for Efflorescent substance.
Suggest one method for the removal along with the reaction for temporary hardness.
Suggest one method for the removal along with the reaction for permanent hardness of water.
What do you understand by
Soft water
What are the advantages of soft water.
What are the advantages of hard water.
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you prove the advantage of detergent over soap.
Fill in the blank:
Hard and soft water can be distinguished using _____.
State the causes of hardness in water.
Temporary hardness of water can be removed by
