471: With reference to micro-irrigation, which of the following statements is/are correct ?
1. Fertilizer/nutrient loss can be reduced.
2. It is the only means of irrigation in dry land farming.
3. In some areas of farming, receding of ground water table can be checked.
Select the correct answer using the codes given below:
(a) 1 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
472: A father is now three times as old as his son. Five years back, he was four times as old as his son. The age of the son is
(a) 12 years
(b) 15 years
(c) 18 years
(d) 20 years
473: Yuan is the currency of:
(a) China
(b) Japan
(c) Indonesia
(d) Burma
474: Consider the following pairs: National Park River flowing through the Park
1. Corbett National Park : Ganga
2. Kaziranga National Park : Manas
3. Silent Valley National Park : Kaveri
Which of the above pairs is/are correctly matched?
(a) 1 and 2
(b) 1 and 3
(c) 3 only
(d) None
475: For short-term climate prediction, which one of the following events, detected in the last decade, is associated with occasional weak monsoon rains in the India subcontinent?
(a) La Nina
(b) Movement of Jet Streams
(c) El Nino and Southern Oscillations
(d) Greenhouse effects on global level