These essential MCQ questions are selected from the most important topics in UPSC Civil Services Prelims 2026. Sections include Geography, Indian Economy, General Science, Indian Polity and Current Affairs. For truely unlimited daily MCQ practice, visit Vooo AI Education.
🌍 UPSC General Knowledge
1Which planet is closest to the Sun?
Answer: B — Mercury
Mercury is the smallest and innermost planet in the Solar System. Its orbit around the Sun takes 87.97 Earth days, the shortest of all planets.
Mercury is the smallest and innermost planet in the Solar System. Its orbit around the Sun takes 87.97 Earth days, the shortest of all planets.
2Tropic of Cancer passes through which Indian state?
Answer: C — Gujarat
The Tropic of Cancer (23.5°N) passes through 8 Indian states: Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Jharkhand, West Bengal, Tripura and Mizoram.
The Tropic of Cancer (23.5°N) passes through 8 Indian states: Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Jharkhand, West Bengal, Tripura and Mizoram.
3India's First Five Year Plan began in:
Answer: A — 1951
India's First Five Year Plan was launched in 1951 under PM Jawaharlal Nehru. It focused on agriculture and was based on the Harrod-Domar model.
India's First Five Year Plan was launched in 1951 under PM Jawaharlal Nehru. It focused on agriculture and was based on the Harrod-Domar model.
4Which gas is most abundant in Earth's atmosphere?
Answer: B — Nitrogen
Nitrogen makes up approximately 78% of Earth's atmosphere, followed by Oxygen at 21%, Argon at 0.93% and Carbon dioxide at 0.04%.
Nitrogen makes up approximately 78% of Earth's atmosphere, followed by Oxygen at 21%, Argon at 0.93% and Carbon dioxide at 0.04%.
5Who is called the Father of Indian Constitution?
Answer: B — B.R. Ambedkar
Dr. B.R. Ambedkar was the chairman of the Drafting Committee of the Indian Constitution. He is widely regarded as the Father of the Indian Constitution.
Dr. B.R. Ambedkar was the chairman of the Drafting Committee of the Indian Constitution. He is widely regarded as the Father of the Indian Constitution.
6Which river is called the Sorrow of Bihar?
Answer: C — Kosi
The Kosi River is called the Sorrow of Bihar due to its frequent devastating floods. It originates in Nepal and joins the Ganga in Bihar.
The Kosi River is called the Sorrow of Bihar due to its frequent devastating floods. It originates in Nepal and joins the Ganga in Bihar.
7GST in India was implemented in which year?
Answer: B — 2017
Goods and Services Tax (GST) was implemented in India on 1 July 2017, replacing a complex system of central and state taxes with a unified indirect tax structure.
Goods and Services Tax (GST) was implemented in India on 1 July 2017, replacing a complex system of central and state taxes with a unified indirect tax structure.
8Which vitamin is produced by sunlight on skin?
Answer: D — Vitamin D
Vitamin D is synthesised in human skin upon exposure to ultraviolet B (UVB) radiation from sunlight. It is essential for calcium absorption and bone health.
Vitamin D is synthesised in human skin upon exposure to ultraviolet B (UVB) radiation from sunlight. It is essential for calcium absorption and bone health.
9Sundarbans delta is formed by which rivers?
Answer: B — Ganga and Brahmaputra
The Sundarbans is the world's largest mangrove forest, formed by the delta of the Ganga, Brahmaputra and Meghna rivers. It spans India and Bangladesh.
The Sundarbans is the world's largest mangrove forest, formed by the delta of the Ganga, Brahmaputra and Meghna rivers. It spans India and Bangladesh.
10Which Article of Constitution abolishes untouchability?
Answer: C — Article 17
Article 17 of the Indian Constitution abolishes untouchability and forbids its practice in any form. Enforcement of any disability arising out of untouchability is an offence.
Article 17 of the Indian Constitution abolishes untouchability and forbids its practice in any form. Enforcement of any disability arising out of untouchability is an offence.
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