Q: Which of the following is the 25 cm rainfall line significance in Rajasthan?
Answer: It separates arid and semi-arid regions
Explanation: The 25 cm (250 mm) isohyet line is significant as it separates the arid western Rajasthan from the semi-arid eastern Rajasthan. Areas west of this line receive less than 25 cm of annual rainfall and form the true desert. The Aravalli Range roughly coincides with this rainfall boundary.
Q: Sambhar Lake in Rajasthan is India's largest inland lake of which type?
Answer: Saltwater lake
Explanation: Sambhar Lake is India's largest inland saltwater lake, located in Jaipur district of Rajasthan. It covers an area of approximately 230 sq km and is an important source of salt production, contributing about 8.7% of India's salt production. The lake is also a designated Ramsar site.
Q: What is the literacy rate of Rajasthan according to Census 2011?
Answer: 66.11%
Explanation: According to Census 2011, the literacy rate of Rajasthan is 66.11%, which is below the national average of 73.0%. The male literacy rate is 79.19% while the female literacy rate is only 52.12%. Rajasthan has one of the lowest female literacy rates among Indian states.
Q: Which of the following minerals is Rajasthan the sole producer of in India?
Answer: Wollastonite
Explanation: Rajasthan is the sole producer of wollastonite in India, a calcium silicate mineral used in ceramics and paints. It is mined primarily in the Sirohi and Udaipur districts. Rajasthan also leads in the production of zinc, lead, marble, sandstone, and several other minerals.
Q: The Khetri copper mines are located in which district of Rajasthan?
Answer: Jhunjhunu
Explanation: The Khetri copper mines are located in Jhunjhunu district of Rajasthan. Khetri is one of the largest copper mining areas in India and is operated by Hindustan Copper Limited. The Khetri Copper Complex was established in the 1960s and has been a major contributor to India's copper production.
Q: Which division of Rajasthan includes the maximum number of districts bordering Pakistan?
Answer: Bikaner
Explanation: The Bikaner Division includes districts like Bikaner, Ganganagar, and Hanumangarh which border Pakistan. The Jodhpur Division also has Jaisalmer and Barmer bordering Pakistan. Together, four districts of Rajasthan (Barmer, Jaisalmer, Bikaner, and Ganganagar) share the international boundary.
Q: What is the sex ratio of Rajasthan according to Census 2011?
Answer: 928 females per 1000 males
Explanation: According to Census 2011, the sex ratio of Rajasthan is 928 females per 1000 males, which is below the national average of 943. Rajasthan's sex ratio has shown improvement from 921 in 2001. The districts of Dungarpur and Banswara have relatively higher sex ratios in the state.
Q: Which national highway connects Delhi to Mumbai passing through Rajasthan?
Answer: NH-8 (now NH-48)
Explanation: NH-8 (renumbered as NH-48) connects Delhi to Mumbai passing through Rajasthan via Jaipur, Ajmer, Udaipur, and other cities. This highway is part of the Golden Quadrilateral project. It is one of the busiest highways in Rajasthan facilitating trade and tourism.
Q: Which type of climate does western Rajasthan primarily experience?
Answer: Arid
Explanation: Western Rajasthan primarily experiences an arid (BWh according to Koppen classification) climate with extreme temperatures. Summer temperatures can exceed 50°C while winter nights can drop below freezing. Annual rainfall in the western desert region is less than 25 cm.
Q: The Indira Gandhi Canal was earlier known by which name?
Answer: Rajasthan Canal
Explanation: The Indira Gandhi Canal was originally known as the Rajasthan Canal. It was renamed in 1984 after former Prime Minister Indira Gandhi. The canal was conceived by Kanwar Sain, an engineer, and its construction began in 1958 to bring water from the Sutlej and Beas rivers to the arid regions of Rajasthan.