Skip to content
GK24
Prime

Defence GK Questions 2026

Static GK carries most of the General Knowledge marks in the defence exams, and science carries the largest share of it. In NDA & NA, Physics, Chemistry and General Science are about half of the 400 marks of Part B, and History, the freedom movement and Geography are about 20% each, as per the notice. In the CDS (II) 2026 General Knowledge paper, GK24 counted about 37 science questions, about 20 each on Polity and History, about 15 on Geography and environment and about 10 on the Economy; this count is guidance, not an official break-up. The Army's Agniveer CEE gives 15 of its 50 General Duty questions to General Knowledge and 15 to General Science, which covers cells, the human body, plants and animals and common epidemics. Its GK list names history, culture and geography of India and its neighbours, the Constitution, inventions and discoveries, books and authors, and the Indian Armed Forces. This page holds GK24's topic-wise GK notes and GK questions tagged for NDA, CDS and Agniveer, in English and Hindi: General Science, Indian History, Art and Culture, Indian Polity, Geography, Indian Economy and Static GK. Read one topic at a sitting, then solve its questions and the previous-year questions of your exam to see what stayed with you.

Defence GK Questions with Answers

Q5281.Indian HistoryAsked in: NDA · NDA-II 2022, GATMedium

Which of the following statements is/are correct?

1. The Dutch East India Company was formed after the formation of the British East India Company.

2. Vasco da Gama reached Calicut in 1498.

Select the correct answer using the code given below.

  1. A.1 only
  2. B.2 only
  3. C.Both 1 and 2
  4. D.Neither 1 nor 2
Show answer
Correct answer: C. Both 1 and 2

The English East India Company was chartered in 1600 and the Dutch company in 1602, and Vasco da Gama landed near Calicut in May 1498.

Q5282.General ScienceAsked in: NDA · NDA-II 2023, GATEasy

Sita, 1·5 m high, stands before a plane mirror fixed on a wall to view her full image. What should be the minimum height of the plane mirror so that Sita can view her image fully?

  1. A.0·50 m
  2. B.0·35 m
  3. C.0·75 m
  4. D.0·25 m
Show answer
Correct answer: C. 0·75 m

To see one's full image in a plane mirror, the mirror must be at least half the person's height: half of 1·5 m is 0·75 m. Light from Sita's feet must reflect from the mirror into her eyes, and so must light from the top of her head.

Q5283.General ScienceAsked in: NDA · NDA-I 2024, GATEasy

Which of the following forces is/are fundamental in nature?

1. Gravitational force

2. Electromagnetic forces

3. Strong and weak nuclear forces

Select the correct answer using the code given below:

  1. A.1 only
  2. B.1 and 2 only
  3. C.2 and 3 only
  4. D.1, 2 and 3
Show answer
Correct answer: D. 1, 2 and 3

Physics recognises four fundamental forces: gravitational, electromagnetic, strong nuclear and weak nuclear, and the question lists all four. Every other force we meet is a form of these.

Q5286.General ScienceAsked in: NDA · NDA-II 2025, GATMedium

Which one of the following statements for second law of motion is NOT correct?

  1. A.The net force on a body is proportional to that body's acceleration
  2. B.The net force on a body is in the same direction as the acceleration
  3. C.The time rate of change of momentum is equal to force
  4. D.The net force on a body is proportional to that body's momentum
Show answer
Correct answer: D. The net force on a body is proportional to that body's momentum

Force depends on how fast momentum changes, not on the momentum itself. Newton's second law states that the rate of change of momentum of a body is proportional to the net force on it and takes place in the direction of the force.

Q5287.General ScienceAsked in: NDA · NDA-I 2026, GATHard

For an ideal gas, a process is described by P = kT, where k is a constant. If the molar heat capacity for this process is C, then which one of the following is correct (where the symbols have their usual meanings)?

  1. A.C = Cp
  2. B.C = Cv
  3. C.C = (Cp + Cv)/2
  4. D.C is never constant
Show answer
Correct answer: B. C = Cv

If pressure is proportional to temperature for a fixed amount of ideal gas, the volume must stay constant, so the process is isochoric.

Q5288.General ScienceAsked in: NDA · NDA-II 2026, GATHard

Consider the following statements:

I. The weight of an object is the same everywhere on the surface of the Earth, but its inertial mass could be different.

II. The inertial mass and gravitational mass of an object are proportional and the proportionality constant is the same everywhere.

III. The inertial mass and weight of an object are the same at different places on Earth.

Which of the statements given above is/are correct?

  1. A.I only
  2. B.II only
  3. C.I and II
  4. D.II and III
Show answer
Correct answer: B. II only

Mass is the same everywhere, but weight changes with g, so only statement II holds. Inertial mass measures how much a body resists a change in motion (F = ma); gravitational mass measures how strongly gravity pulls it.

Q5291.General ScienceAsked in: NDA · NDA-I 2018, GATEasy

If an object moves with constant velocity then which one of the following statements is NOT correct?

  1. A.Its motion is along a straight line
  2. B.Its speed changes with time.
  3. C.Its acceleration is zero
  4. D.Its displacement increases linearly with time
Show answer
Correct answer: B. Its speed changes with time.

Constant velocity means both the speed and the direction stay the same, so the speed cannot change. Velocity is a vector: it has a magnitude, the speed, and a direction.

Q5294.Indian PolityAsked in: NDA · NDA-I 2020, GATEasy

According to Article 79 of the Constitution of India, which of the following is/are described as a part of Parliament of India?

1. The House of the People

2. The Council of States

3. The President of India

Select the correct answer using the code given below:

  1. A.1 only
  2. B.1 and 2 only
  3. C.2 and 3 only
  4. D.1, 2 and 3
Show answer
Correct answer: D. 1, 2 and 3

Article 79 says that there shall be a Parliament for the Union which shall consist of the President and two Houses.

Q5295.General ScienceAsked in: NDA · NDA-I 2021, GATEasy

Which of the following pairs of physical phenomenon and the discoverer is/are correctly matched?

1. James Chadwick : Photoelectric effect

2. Albert Einstein : Neutron

3. Marie Curie : Radium

Select the correct answer using the code given below:

  1. A.1, 2 and 3
  2. B.1 and 2 only
  3. C.2 and 3 only
  4. D.3 only
Show answer
Correct answer: D. 3 only

Marie Curie discovered radium; the first two pairs have their discoveries swapped. Marie Curie and Pierre Curie discovered the radioactive elements polonium and radium in 1898, and Marie Curie went on to win Nobel Prizes in both physics (1903) and chemistry (1911).

Q5297.General ScienceAsked in: NDA · NDA-I 2022, GATEasy

Evaporation from the surface of a given liquid takes place more rapidly when

  1. A.the temperature is high and the surface area of the liquid is large
  2. B.the temperature is low and the surface area of the liquid is large
  3. C.the temperature is low and the surface area of the liquid is small
  4. D.the temperature is high and the surface area of the liquid is small
Show answer
Correct answer: A. the temperature is high and the surface area of the liquid is large

Both changes let more molecules escape from the surface each second. Evaporation is a surface process: only molecules at the surface with enough energy break away into the air.

Q5300.General ScienceAsked in: NDA · NDA-I 2024, GATEasy

If the current through an electrical machine running on direct current is 15 A and the machine runs for 10 minutes, the charge that passes through the machine during this time is:

  1. A.1·50 C
  2. B.150 C
  3. C.900 C
  4. D.9000 C
Show answer
Correct answer: D. 9000 C

Charge equals current multiplied by time, and here that is 15 A × 600 s = 9000 C. Electric current is the rate of flow of charge, I = Q/t, so Q = I × t. The SI unit of charge, the coulomb, is the charge carried by one ampere…

GK Questions for sub-exams