511: The Asia Pacific Economic Cooperation Forum was held in the year 2001 in
(a) Bangkok
(b) Hongkong
(c) Jakarta
(d) Shanghai
512: The age of a man is three times the sum of the ages of his two sons. Five years hence, his age will be doubled of the sum of the ages of his sons. The father's present age is
(a) 40 years
(b) 45 years
(c) 50 years
(d) 55 years
513: Consider the following rivers:
1. Vamsadhara
2. Indravati
3. Pranahita
4. Pennar
Which of the above are tributaries of Godavari?
(a) 1, 2 and 3
(b) 2, 3 and 4
(c) 1, 2 and4
(d) 2 and 3 only
514: The length of its day and the tilt of its axis are almost identical to those of the earth. This is true of
(a) Uranus
(b) Neptune
(c) Saturn
(d) Mars
515: Consider the following:
1. Photosynthesis
2. Respiration
3. Decay of organic matter
4. Volcanic action
Which of the above add carbon dioxide to the carbon cycle on Earth
(a) 1 and 4 only
(b) 2 and 3 only
(c) 2, 3 and 4 only
(d) 1, 2, 3 and 4