3476: Consider the following climatic and geographical phenomena:
1. Condensation
2. High temperature and humidity
3. Orography
4. Vertical wind
Thunder Cloud development is due to which of these phenomena?
(a) 1 and 2
(b) 2, 3 and 4
(c) 1, 3 and 4
(d) 1, 2, 3 and 4
3477: At which place Gautama Buddha delivered his first sermon?
(a) Sarnath
(b) Lumbini
(c) Bodh Gaya
(d) Vaishali
3478: Consider the following statements about the Indian National Congress
I. Sarojini Naidu was the first woman to be the President of the Congress.
II. C.R. Das was in prison when he functioned as the President of the Congress.
III. The first Britisher to become the President of the Congress was Alan Octavian Hume.
IV. Alfred Webb was the President of the Congress in 1894.
Which of these statements are correct ?
(a) I and III
(b) II and IV
(c) II, III and IV
(d) I, II, III and IV
3479: Which one of the following Venn diagrams correctly illustrates the relationship among the classes: Carrot, Food, Vegetable ?
3480: Optical fibre works on the principle of
(a) total internal reflection
(b) refraction
(c) scattering
(d) interference