4001: Which one of the following companies is associated with the exploration and commercial production of oil in Barmer-Sanchore basin of Rajasthan?

(a) Cairn Energy
(b) ONGC
(c) Reliance Energy Ventures
(d) Reliance Energy Ventures
4002: Consider the following statements about the megacities of India :

I. Population of each megacity is more than 5 million.
II. All the megacities are important sea ports.
III. Megacities are either national or State capitals.

Which of these statements are correct ?

(a) I, II and III
(b) I and II
(c) II and III
(d) I and III
4003: Which one of the following can be used to confirm whether drinking water contains a gamma emitting isotope or not?

(a) Microscope

(b) Lead plate

(c) Scintillation counter

(d) Spectrophotometer
4004: Who among the following was not sent to Lanka for the propagation of Buddhism?

(a) Rashtriya

(b) Bhadrasaro

(c) Uttriya

(d) Sona
4005: For the measurement/estimation of which of the following are satellite images/remote sensing data used?

1. Chlorophyll content in the vegetation of a specific location
2. Greenhouse gas emissions from rice paddies of a specific location
3. Land surface temperatures of a specific location

Select the correct answer using the code given below.

(a) 1 Only

(b) 2 and 3 only

(c) 3 only

(d) 1, 2 and 3