Question

answer the given questions in the photo pls ​

Answer 1

Answer:

1st question -To seperate sand salt and iron we have to do a simple experiment.

Explanation:

Just we have to take a magnet and attract the iron fillings to it. Then the iron fillings will be seperate from sand and salt.

Sand therefore does not dissolve in water and is insoluble. It is easy to separate sand and water by filtering the mixture. Salt can be separated from a solution through evaporation. Experiment to seperate sand and water.

2nd Question- Lustrous materials are those that have a shine on them. Due to this property metals are widely used for making jewellery. Example: Gold, silver and most metals are lustrous in nature.

Metals lose their lustre after a while because they are non reactive that's why.

3rd Question- The disease Rita is suffering from is Myasthenia Gravis.

One vitamin- Vitamin B12

One mineral- Iodine.