SSC Selection Post 2025 PYQ — Question 2

SSC Selection Post - Higher Secondary Level - 25th July 2025 - Shift 2 • General Awareness • Q2

One of the key objectives of India’s Venus Orbiter Mission (VOM) is to study the ______ and surface topography of Venus.

Show answer & explanation

Correct answer: B

Explanation

Correct Answer: airglow and atmospheric dust

Explanation

The Venus Orbiter Mission (VOM), also known as Shukrayaan-1, is a proposed mission by the Indian Space Research Organisation (ISRO). One of its primary scientific objectives is to study the Venusian atmosphere, including airglow, atmospheric chemistry, and the nature of atmospheric dust, alongside mapping the planet's surface topography to understand its geological processes.

Key Points

  • Airglow refers to the faint emission of light by a planetary atmosphere. Studying it helps scientists understand the chemical reactions taking place in the upper atmosphere.
  • Atmospheric dust study is crucial for understanding how the planet's thick, cloud-covered atmosphere interacts with sunlight and heat.
  • Surface topography mapping will help in identifying volcanic features and tectonic activities on Venus.

Additional Facts

  • Venus is often called Earth's 'twin' due to its similar size and density, but its atmospheric conditions are extremely hostile compared to Earth.
  • The mission intends to provide insights into why Venus, despite being a twin to Earth, evolved into a planet with a runaway greenhouse effect.

Important Questions

Question: Which space agency is planning the Venus Orbiter Mission (VOM)?

Answer: ISRO (Indian Space Research Organisation).

Question: What is the main reason Venus is considered Earth's twin?

Answer: Because of their similar size, mass, density, and chemical composition.