What is the role of the radiator cap in a vehicle?

Explanation: The radiator cap maintains pressure in the cooling system for efficiency.

Q: Who has topped the 'Environmental Performance Index 2024' released on June 17, 2024?
Ans: Estonia (India's rank - 176th)

Q: Who has partnered with eSeva and HAN Pokhara to promote UPI in Nepal on April 14, 2024?
Ans: PhonePe

Q: Which state government has issued a special postal cover in honor of Ratan Tata on October 10, 2024?
Ans: Bihar

Q: Who led the Santhal Rebellion of 1855–56?
Ans: Sidhu and Kanhu Murmu

Q: Which modern vaccine prevents rotavirus infection?
Ans: RV vaccine

Q: What is the process of changing a liquid into a gas called?
Ans: Evaporation

Q: In a position-time graph, what does the slope of the line represent?
Ans: velocity

Q: What was the main occupation in ancient villages?
Ans: Farming

Q: How many medals has India won in the 17th International Earth Science Olympiad?
Ans: 8

Q: The numbers and types of species living in what groups generally change through time, a process called ecological succession?
Ans: communities

Q: Who has taken charge of the Air Force Training Command on May 4, 2024?
Ans: Nagesh Kapoor

Q: What is a symptom of a faulty ignition switch?
Ans: Engine not starting

Q: What was a key driver of economic performance in February 2025?
Ans: Winter storms

Q: What was the tax paid by farmers to kings?
Ans: Bhaga

Q: What percentage of Americans cited immigration as the top problem in 2024?
Ans: 48%