96: The first to start a joint stock company to trade with India were the
(a) Portuguese
(b) Dutch
(c) French
(d) Danish
97: Soils of Western Rajasthan have a high content of
(a) Aluminium
(b) Calcium
(c) Nitrogen
(d) Phosphorus
98: In which of the following activities are Indian Remote Sensing (IRS) satellites used?
1. Assessment of crop productivity
2. Locating groundwater resources
3. Mineral exploration
4. Telecommunications
5. Traffic studies
Select the correct answer using the code given below.
(a) 1, 2 and 3 only
(b) 4 and 5 only
(c) 1 and 2 only
(d) 1, 2, 3, 4 and 5
99: The rainbow and the rainbow-like colours seen on a thin film of oil on a water surface are two phenomena. They are
(a) Similar in nature and both are due to refraction of light
(b) Different in nature and rainbow is due to interference of light, while colour of thin film is due to diffraction
(c) Similar in nature and both are due to interference of light
(d) Different in nature and rainbow is due to refraction, while colour of thin film is due to interference of light
100: What was the main reason for a great civil strife in Argentina recently?
(a) Ethnic conflict between the native Red Indian tribes and others
(b) Economic crisis due to huge public debt
(c) The issue of using native languages as medium of instruction in schools
(d) Clashes between government troops and secessionist groups