The then Chief Minister of Rajasthan, Smt. Vasundhara Raje inaugurated the refinery for Rs 3.75 crore in the Lunkaransar area of Bikaner on October 3, 2014. With this, Rajasthan became the first state in the country to establish this type of refinery. Through this, 11,574.09 kg of olive oil has been produced, given the brand name 'Raj Olive Oil'. Bikaner is also being developed as a centre for olive cultivation.

1. The first biological park of Rajasthan is 'Sajjangarh Biological Park' located in Udaipur district, which was inaugurated on 12 April 2015 by the then Environment Minister Prakash Javedkar.

2. It is situated at the foothills of Sajjangarh Monsoon Palace, 8 kilometres away from Udaipur city. Mainly tigers, panthers, lions, reptiles, nilgai, sambar, wild boar and honeys are found in this park.

3. 5 Biological Parks of Rajasthan which include Sajjangarh Biological Park (Udaipur), Machia Biological Park (Jodhpur), Nahargarh Biological Park (Jaipur), Abheda Biological Park (Kota), Marudhara Biological Park (Bikaner) etc.

Khadin-It is a temporary pond made of earth, it is built under some sloping land. There is an earthen wall (Dhora) on both sides and a strong wall made of stone on the third side. When there is excess water, the pond gets filled and the water flows into the next pond. After the water in Khadin dries up, agriculture is done in it.

2. Pond- In Rajasthan, rain water is often collected in ponds. There are separate bathing ghats for men and women here. There is a well at the bottom of the pond, which is called Beri. This ancient method of water harvesting still holds its importance. This increases the ground water level.

4. Stepwell-Stepwells have their own place in Rajasthan. This is an ancient method of storing water. It is deep and has stairs and platforms to descend and is rich in artefacts.

5. Tanka: Tanka is an underground reservoir built to store rain water. The tanka usually has a square or rectangular shape and is constructed from clay or stone. A wall is built around the tanka so that rain water can collect in it.

1. Wood Fossil Park is located in the 'Marubhoomi National Park'.

2. Akal Wood Fossil Park is a National Geological Monument of India.

3. It is situated in Jaisalmer district, Rajasthan.

4. It is also a biodiversity heritage site.

1. Four rivers (Rupangarh, Mentha, Khari, Khandela) fall into Sambhar Lake. Salt is produced on a large scale from this lake.

2. Sambhar Lake: This is a salt water lake located near Jaipur city in Rajasthan state of India. This lake is situated at an altitude of 1,200 feet above sea level.