Which vitamin is primarily produced when skin is exposed to sunlight?
A Vitamin A B Vitamin B C Vitamin D D Vitamin E
Vitamin D is synthesized in the skin when exposed to ultraviolet B (UVB) radiation from sunlight.
Which metal is the best conductor of electricity?
A Copper B Aluminum C Silver D Gold
Silver is the best conductor of electricity among all metals, followed by copper.
A trader marks his goods 40% above the cost price. If he offers a discount of 20%, what is his profit percentage?
A 12% B 20% C 25% D 15%
Let CP = 100. MP = 140. SP after 20% discount = 140 × 0.80 = 112. Profit = 12%
Which of the following is NOT a greenhouse gas?
A Carbon Dioxide B Nitrogen C Methane D Nitrous Oxide
Nitrogen is not a greenhouse gas. CO2, CH4, and N2O are all major greenhouse gases.
In 2024, who became the youngest person to win the Nobel Prize in Physics?
A Demis Hassabis B John Jumper C Geoffrey Hinton D Yann LeCun
John Jumper and Demis Hassabis won the 2024 Nobel Prize in Physics for machine learning applications in protein folding.
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Which ministry in India is responsible for environmental protection and climate change?
A Ministry of Earth Sciences B Ministry of Environment, Forest and Climate Change C Ministry of Power D Ministry of New and Renewable Energy
The Ministry of Environment, Forest and Climate Change is the nodal agency for environmental protection in India.
What is the maximum number of articles that can be added to the Constitution of India without an amendment?
A 10 B 5 C There is no maximum limit D Unlimited through ordinary legislation
Articles can be added to the Constitution through amendments with proper procedure, with no predetermined maximum limit.
If x² - 9x + 20 = 0, what are the values of x?
A 4 and 5 B 3 and 6 C 2 and 10 D 1 and 20
x² - 9x + 20 = (x - 4)(x - 5) = 0, so x = 4 or x = 5
Which country hosted the 2024 Summer Olympic Games?
A Japan B France C Germany D Italy
Paris, France hosted the 2024 Summer Olympic Games.
The Pradhan Mantri Garib Kalyan Yojana (PMGKY) was launched in which year?
A 2015 B 2016 C 2017 D 2018
PMGKY was launched in 2016 as a voluntary income disclosure scheme.
How many Lok Sabha seats are reserved for Scheduled Tribes in India?
A 79 B 81 C 84 D 87
Out of 545 Lok Sabha seats, 84 are reserved for Scheduled Tribes and 131 for Scheduled Castes.
Which of the following is the correct expansion of UNESCO?
A United Nations Educational, Scientific and Cultural Organization B United Nations Environmental Safety and Cultural Organization C Union of Nations Educational, Social and Cultural Organization D United Nations Economic, Social and Cultural Organization
UNESCO stands for United Nations Educational, Scientific and Cultural Organization, established in 1945.
Which of the following states has the longest coastline in India?
A Gujarat B Maharashtra C Tamil Nadu D Andhra Pradesh
Gujarat has the longest coastline among Indian states at approximately 1,214 km.
In which year did the Reserve Bank of India (RBI) launch the Unified Payments Interface (UPI)?
A 2014 B 2016 C 2015 D 2017
UPI was launched by RBI and NPCI on April 11, 2016, but was officially introduced for use in 2015.
Which Indian city is known as the 'Silicon Valley of India'?
A Pune B Bangalore C Hyderabad D Chennai
Bangalore (now Bengaluru) is known as the Silicon Valley of India due to its concentration of IT industries.
If a man walks 5 km in 1 hour, how many kilometers will he walk in 2.5 hours at the same speed?
A 10 km B 12.5 km C 15 km D 20 km
Distance = Speed × Time = 5 × 2.5 = 12.5 km
The World Health Organization (WHO) is headquartered in which city?
A New York B Geneva C Brussels D Vienna
WHO is headquartered in Geneva, Switzerland.
Which metal is most abundant in the Earth's crust?
A Iron B Aluminum C Copper D Zinc
Aluminum is the most abundant metal in the Earth's crust, comprising about 8% by mass.
A shopkeeper sells an item at ₹480 after giving a 20% discount. What was the marked price?
A ₹600 B ₹576 C ₹625 D ₹720
If 20% discount is given, selling price = 80% of marked price. 480 = 0.8 × MP, so MP = 600
Which amendment to the Indian Constitution introduced the concept of Fundamental Duties?
A 42nd Amendment B 44th Amendment C 45th Amendment D 40th Amendment
The 42nd Amendment (1976) introduced Fundamental Duties in Part IV-A of the Constitution.
