NDA (Defence) General Science Mock Test
74 free timed sets · 3,676 questions · 3,123 easy / 553 moderate / 0 hard · solutions for every question
All General Science sets
Sample General Science questions
1. What do we call the visible part of the electromagnetic spectrum?
- (A) electricity
- (B) light
- (C) radio
- (D) weight
Show answer
(B) light. Earth is just a tiny speck in the universe. Our planet is surrounded by lots of space. Light travels across empty space. Astronomers can study light from stars to learn about the universe. Light is the visible part of the electromagnetic spectrum . Astronomers use the light that comes to us to gather information about the universe.
2. Ana is a cross-country runner. After finishing a race she noticed that she felt hot due to the release of thermal energy. Which is the most likely source of the thermal energy?
- (A) heat being absorbed from the sun
- (B) energy conversions occurring in her body
- (C) friction from the air
- (D) mechanical energy being absorbed
Show answer
(B) energy conversions occurring in her body. Correct answer: energy conversions occurring in her body.
3. Fermat's principle states that what will always take the path that takes the least amount of time?
- (A) electricity
- (B) wind
- (C) sound
- (D) light
Show answer
(D) light. Light is a wave of changing electric and magnetic fields. Light waves are caused by disturbances in an electromagnetic field, like the acceleration of charged particles (such as electrons). Light has a dual nature; at times, it acts like waves, while at other times it acts like particles, called photons . Light travels through space at the maximum speed allowed by the laws of physics, called the speed of light. Light has no mass, but it carries energy and momentum. Fermat's principle states that light will always take the path that takes the least amount of time (not distance).
NDA (Defence) General Science — FAQs
Is the NDA (Defence) General Science mock test free?
Yes. All 74 General Science sets are free, need no signup, and give instant scores with a solution for every question.
How many General Science questions are there for NDA (Defence)?
3,676 questions across 74 sets: 3,123 easy, 553 moderate and 0 hard.
Will I get the same questions again?
No. Each attempt draws a fresh random subset, shuffles the order and options, and prefers questions you have not seen on this device. The Surprise Set draws from the whole subject pool.
Can I choose difficulty and timer?
Yes — pick Easy, Moderate, Hard or Mixed, and choose no timer, 10 or 20 minutes, or the real exam pace.