3041: Willy-Willy is
(a) a type of tree grown in temperate regions
(b) a wind that blows in a desert
(c) a tropical cyclone of the north-west Australia
(d) a kind of common fish found near Lakshadweep islands
3042: Which one of the following is a non-metallic mineral?
(a) Manganese
(b) Magnesium
(c) Gypsum
(d) Bauxite
3043: Which one of the following aroused a wave of popular indignation that led to the massacre by the British at Jallianwala Bagh ?
(a) The arms Act
(b) The Public Safety Act
(c) The Vernacular Press Act
(d) The Rowlatt Act
3044: Two important characteristics of a hypothesis are that it should be testable and that it should be stated in a manner that it can be refuted. Which one of the following hypotheses, fulfils these characteristics ?
(a) Intelligent persons have good memory
(b) Some birds are animals
(c) Some businessmen are dishonest
(d) All men are mortal
3045: Consider the following:
1. Electromagnetic radiation
2. Geothermal energy
3. Gravitational force
4. Plate movements
5. Rotation of the earth
6. Revolution of the earth
Which of the above are responsible for bringing dynamic changes in the surface of the earth?
(a) 1, 2, 3 and 4 only
(b) 1, 3, 5 and 6 only
(c) 2, 4, 5 and 6 only
(d) 1, 2, 3, 4, 5 and 6