With reference to the mineral sources of India, consider the following pairs:
Mineral 90% National Sources in
1. Copper — Jharkhand
2. Nickel — Orissa
3. Tungsten — Kerala
Which of the pairs given above is/are correctly matched?

A layer in the Earth’s atmosphere called Ionosphere facilitates radio communication. Why?
1. The presence of ozone causes the reflection of radio waves to Earth.
2. Radio waves have a very long wavelength.
Which of the statements given above is/are correct?

Among the following States, which one has the most suitable climatic conditions for the cultivation of a large variety of orchids with minimum cost of production, and can develop an export oriented industry in this field?

As a result of their annual survey, the National Geographic Society and an international polling firm Globe Scan gave India top rank in Greendex 2009 score. What is this score?

At which one of the following places do two important rivers of India originate, while one of them flows towards north and merges with another important river flowing towards Bay of Bengal, the other one flows towards Arabian Sea?

Between India and East Asia, the navigation-time and distance can be greatly reduced by which of the following?
1. Deepening the Malacca straits between Malaysia and Indonesia.
2. Opening a new canal across the Kra isthmus between the Gulf of Siam and Andaman Sea.
Which of the statements given above is/are correct?

The lower Gangetic plain is characterised by humid climate with high temperature throughout the year. Which one among the following pairs of crops is most suitable for this region?

In India, which one of the following States has the largest inland saline wetland?

Consider the following statements:
1. There are no east flowing rivers in Kerala.
2. There are no west flowing rivers in Madhya Pradesh.
Which of the statements given above is/are correct?

In which one of the following places is the Shompen tribe found?