576: Due to their extensive rice cultivation, some regions may be contributing to global warming. To what possible reason/reasons is this attributable ?
1. The anaerobic conditions associated with rice cultivation cause the emission of methane.
2. When nitrogen based fertilizers are used, nitrous oxide, is emitted from the cultivated soil.
Which of the statements given above is/are correct ?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
577: The group of small pieces of rock - revolving round the sun between the orbits of Mars and Jupiter are called
(a) meteors
(b) comets
(c) meteorites
(d) asteroids
578: Whose name is associated with Fatehpur Sikri?
(a) Akbar
(b) Babar
(c) Shahjehan
(d) Humayun
579: Which of the following minerals are found in a natural way in the State of Chhattisgarh ?
1. Bauxite
2. Dolomite
3. Iron ore
4. Tin
Select the correct answer using the code given below:
(a) 1 and 3 only
(b) I, 2,3 and 4
(c) 1, 2 and 3 only
(d) 2 and 4 only
580: Neap tides are produced in the first and third quarters of the Moon. Then,
(a) The Moon and the Sun are in conjunction with the other planets
(b) The Moon and the Sun are in opposition with each other
(c) The attractions of the Sun and the Moon are at right angles to each other
(d) The Moon and the Sun are in quadrant position to each other