| Barium in a suitable form is administered to patients before an X-ray examination of the stomach, because |
| (a)Barium is a good absorber of X-rays and this helps the stomach to appear clearly in contrast with the other regions in the picture |
| (b)Barium compound, like magnesium sulphate helps in cleaning the stomach before X-ray examination |
| (c)Barium salts are white in colour and this helps the stomach to appear clearly in contrast with other regions in the picture |
(d)Barium allows X-rays to pass through the stomach on account of its transparency to X-ray  |
