General Knowledge Mcqs 2025
- How many coordinates are used in the geographic coordinate system?
(A) 2
(B) 3
(C) 4
(D) 5
Answer: (A) 2
Explanation: The geographic coordinate system specifies locations using latitude and longitude. - Which of the following is considered the most harmful climate pollutant?
(A) Carbon monoxide
(B) Carbon dioxide
(C) Sulfur oxides
(D) Nitrogen oxides
Answer: (B) Carbon dioxide
Explanation: CO₂ is a major greenhouse gas, significantly contributing to global warming. - What type of radiation does the ozone layer shield the Earth from?
(A) Microwaves
(B) X-rays
(C) Infrared
(D) Ultraviolet
Answer: (D) Ultraviolet
Explanation: The ozone layer absorbs UV radiation, protecting life on Earth. - Email communication falls under which method of information transmission?
(A) Circuit switching
(B) Datagram switching
(C) Frame switching
(D) None of these
Answer: (B) Datagram switching
Explanation: Emails use packet-switched networks, where data is sent in independent packets. - Which surface has the lowest albedo?
(A) Desert
(B) Snow
(C) Water
(D) Grass
Answer: (C) Water
Explanation: Water absorbs more sunlight and reflects less, giving it a low albedo. - Fog is formed when water vapor:
(A) Solidifies
(B) Evaporates
(C) Melts
(D) Condenses
Answer: (D) Condenses
Explanation: Fog occurs when water vapor cools and condenses into droplets near the ground. - The tropical region of Earth is located around the:
(A) Equator
(B) North Pole
(C) South Pole
(D) Pacific Ocean
Answer: (A) Equator
Explanation: The tropical zone lies between the Tropic of Cancer and Tropic of Capricorn. - By how much is Earth’s equatorial diameter larger than its polar diameter?
(A) 43 kilometers
(B) 243 kilometers
(C) 443 kilometers
(D) 643 kilometers
Answer: (A) 43 kilometers
Explanation: Earth’s shape is an oblate spheroid, slightly bulging at the equator. - What are the main seasons in tropical climates?
(A) Hot and dry
(B) Cold and dry
(C) Hot and cold
(D) Wet and dry
Answer: (D) Wet and dry
Explanation: Tropical climates experience distinct wet and dry seasons due to monsoons. - What causes wind to form?
(A) Earth’s rotation
(B) Earth’s revolution
(C) Atmospheric temperature differences
(D) Atmospheric pressure differences
Answer: (D) Atmospheric pressure differences
Explanation: Wind is driven by air moving from high-pressure to low-pressure areas. - How does Earth receive energy from the Sun?
(A) Conduction
(B) Radiation
(C) Diffusion
(D) Convection
Answer: (B) Radiation
Explanation: The Sun’s energy reaches Earth via electromagnetic radiation. - Approximately how old is Earth?
(A) 4.5 million years
(B) 5.5 million years
(C) 4.5 billion years
(D) 5.5 billion years
Answer: (C) 4.5 billion years
Explanation: Scientific evidence indicates Earth formed about 4.5 billion years ago.