Daily Current Affairs Quiz: September 06, 2025

Answer: A [To explore the possibility of the presence of water on the Moon]
Explanation:

One of the primary objectives of the Chandrayaan-2 mission, launched by the Indian Space Research Organisation (ISRO), was to explore the south pole of the Moon to confirm the presence of water ice. This was significant because the presence of water would be crucial for future lunar exploration and long-term missions.

Answer: B [Only two]
Explanation:

Statement 1 is correct: Satellites equipped with sensors can accurately measure the temperature of the sea surface, which is a critical factor in predicting the formation of cyclones.

Statement 2 is incorrect: Geostationary satellites orbit the Earth at the equator and provide continuous weather data for almost all parts of the Earth, except the extreme polar regions.

Statement 3 is correct: Remote sensing satellites equipped with special cameras and sensors can detect changes in Earth’s vegetation. This data can be used to predict droughts by analyzing the health and stress levels of plants over large areas.

Answer: D [To directly measure the Sun's neutrino flux and understand its core processes]
Explanation:

a: Studying the solar corona and CMEs is a crucial objective of Aditya-L1. The mission aims to understand the processes that lead to these energetic eruptions.

b: Investigating the heating mechanisms of the chromosphere and corona is another key goal. These outer layers of the Sun are significantly hotter than the photosphere, and the mission seeks to explain this phenomenon.

c: Analyzing the particle and plasma environment at L1 is a core objective. This data will contribute to our understanding of space weather and its impact on Earth.

d: (Correct Option) Aditya-L1 is not designed to directly measure the Sun’s neutrino flux. Neutrino detection requires specialized underground facilities, not space-based observatories like Aditya-L1. The mission focuses on remote sensing observations of the Sun’s outer layers and the solar wind.

Answer: B [1 and 2 only]
Explanation:

Statement 1 is correct: ISRO and CNES jointly developed the Megha-Tropiques satellite, launched in 2011, to study the water cycle in the tropical atmosphere. Statement 2 is correct: NISAR, scheduled for launch in 2024, is a joint Earth observation mission between ISRO and NASA.

Statement 3 is incorrect: While JAXA provided some instruments for Chandrayaan-1, the mission was primarily developed and executed by ISRO. Statement 4 is incorrect: While there has been some collaboration between ISRO and Roscosmos on various aspects of the Gaganyaan mission, including astronaut training, the crew module’s primary development rests with ISRO.

Answer: C [Only three]
Explanation:

Statement 1 is correct: Satellites play a crucial role in various applications that benefit society as weather forecasting relies heavily on satellites for monitoring weather systems and predicting weather conditions.

Statement 2 is correct: Direct-to-home (DTH) television services use satellites to broadcast television signals directly to subscribers’ dishes.

Statement 3 is correct: Oceanography uses satellites to study ocean currents, sea surface temperatures, and sea levels.

Statement 4 is incorrect: Landline telephone services primarily rely on underground and overhead cables rather than satellites. While satellites can be used for communication, especially in remote areas, the primary infrastructure for landline services is cable-based.