1221: Barium in a suitable form is administered to patients before an X-ray examination of the stomach, because
(a) barium allows X-rays to pass through the stomach on account of its transparency to X-rays
(b) barium compound, like magnesium sulphate helps in cleaning the stomach before X-ray examination
(c) 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
(d) barium salts are white in colour and this helps the stomach to appear clearly in contrast with other regions in the picture
1222: Which one of the following rivers does not originate in India?
(a) Beas
(b) Ravi
(c) Chenab
(d) Sutlej
1223: What could be the main reasons for the formation of African and Eurasian desert belt ?
1. It is located in the sub-tropical high pressure cells.
2. It is under the influence of warm ocean currents.
Which of the statements given above is/are correct in this context?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
1224: Which one of the following is a monument constructed by Sher Shah?
(a) Kila-Kuhna Mosque at Delhi
(b) Atala Masjid at Jaunpur
(c) Bara Sona Masjid at Gaur
(d) Quwwat-ul-Islam Mosque at Delhi
1225: Consider the following countries :
1. Australia
2. Canada
3. China
4. India
5. Japan
6. USA
Which of the above are among the 'free-trade partners' of ASEAN ?
(a) 1, 2, 4 and 5
(b) 3, 4, 5 and 6
(c) 1, 3, 4 and 5
(d) 2, 3, 4 and 6