Which is a water purification technology that uses a semipermeable membrane to remove ions, molecules and larger particles from drinking water...?
(A) Filtration
(B) Reverse Osmosis (RO)
(C) Sedimentation
(D) Distillation
✅ Correct Answer:Reverse Osmosis (RO)
Comments
Which is a water purification technology that uses a semipermeable membrane to remove ions, molecules and larger particles from drinking water...?
When a ray of sunlight enters a dark room , its straight path become visible because of dust particles hanging in the air. It is because light is _________...?
(A) Visible
(B) Transparent
(C) Invisible
(D) opaque
✅ Correct Answer:Visible
Comments
When a ray of sunlight enters a dark room , its straight path become visible because of dust particles hanging in the air. It is because light is _________...?