How do you prepare distilled water? Explain the process of distilling water.

Laxmi says that sedimentation and decantation are used at home while cleaning rice and pulses for cooking. Describe the sediments in this process.

Explain the terms hard water and soft water. Write a note on the (ii) Calgon method for the removal of hardness of water.

Explain the terms hard water and soft water. Write a note on the i) ion-exchange method and ii) calgon method for the removal of hardness of water.

Observe the fields in your surrounding and collect information from farmers about the process to remove weeds.

Assertion (A) : The process of settling of heavier insoluble particles from a suspension of a substance in water known as decantation. Reason (R) : This process along with sedimentation is used to get clear water from muddy water.

Can we use a detergent with hard water for the purpose of cleaning ? Explain.

The process of dissolving an acid or a base in water is an____process.