Science (Science) | MCQ Quizzes | Category (T/R/A)
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Science is a rigorous, systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the world.
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Category UID: 9
Label UID: 33
Category Name: Science
Category Full Name: Science
Category Link/Slug: science
Total Quizzes: 59
Total Views: 2106
Last Refreshed: 2026-03-20 05:23:46
Category Description: Science is a rigorous, systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the world. Modern science is typically divided into three major branches: natural sciences (e.g., physics, chemistry, and biology), which study the physical world; the social sciences (e.g., economics, psychology, and sociology), which study individuals and societies; and the formal sciences (e.g., logic, mathematics, and theoretical computer science), which study formal systems, governed by axioms and rules.
Q1. Which planet in our solar system is less dense than water?
Q1. Which planet in our solar system is less dense than water?
Answer: (D) Saturn
Answer: (D) Saturn
Answer: (D) Saturn
Saturn
Saturn
Saturn
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Q2. Who invented the Fountain Pen?
Q2. Who invented the Fountain Pen?
Answer: (D) Petrache Poenaru
Answer: (D) Petrache Poenaru
Answer: (D) Petrache Poenaru
The Romanian inventor Petrache Poenaru received a French patent on May 25, 1827, for the invention of a fountain pen with a barrel made from a large swan quill.
The Romanian inventor Petrache Poenaru received a French patent on May 25, 1827, for the invention of a fountain pen with a barrel made from a large swan quill.
The Romanian inventor Petrache Poenaru received a French patent on May 25, 1827, for the invention of a fountain pen with a barrel made from a large swan quill.
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Q3. The weight of an object on the moon is equal to ___ of its weight on the earth.
Q3. The weight of an object on the moon is equal to ___ of its weight on the earth.
Answer: (D) 1/6
Answer: (D) 1/6
Answer: (D) 1/6
1/6th
The moon's gravitational force is only about 16.6 % of Earth's gravity which means an object would weigh six times less on the moon than they do on Earth.
1/6th The moon's gravitational force is only about 16.6 % of Earth's gravity which means an object would weigh six times less on the moon than they do on Earth.
1/6th The moon's gravitational force is only about 16.6 % of Earth's gravity which means an object would weigh six times less on the moon than they do on Earth.
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Q4. Which planet of the Solar System is the brightest planet?
Q4. Which planet of the Solar System is the brightest planet?
Answer: (C) Venus
Answer: (C) Venus
Answer: (C) Venus
Venus can often be seen within a few hours after sunset or before sunrise as the brightest object in the sky (other than the moon). It looks like a very bright star. Venus is the brightest planet in the Solar System.
Venus can often be seen within a few hours after sunset or before sunrise as the brightest object in the sky (other than the moon). It looks like a very bright star. Venus is the brightest planet in the Solar System.
Venus can often be seen within a few hours after sunset or before sunrise as the brightest object in the sky (other than the moon). It looks like a very bright star. Venus is the brightest planet in the Solar System.
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Q5. What is the audible range of frequencies for normal human ears?
Q5. What is the audible range of frequencies for normal human ears?
Answer: (B) 20 Hz to 20,000 Hz
Answer: (B) 20 Hz to 20,000 Hz
Answer: (B) 20 Hz to 20,000 Hz
The audible range of an average human ear lies between 20 Hz to 20,000 Hz. Humans cannot hear sounds having frequency less than 20 Hz and greater than 20,000 Hz.
The audible range of an average human ear lies between 20 Hz to 20,000 Hz. Humans cannot hear sounds having frequency less than 20 Hz and greater than 20,000 Hz.
The audible range of an average human ear lies between 20 Hz to 20,000 Hz. Humans cannot hear sounds having frequency less than 20 Hz and greater than 20,000 Hz.
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Q6. How much time does sunlight take to reach the Earth from the Sun?
Q6. How much time does sunlight take to reach the Earth from the Sun?
Answer: (D) 8 minutes 16.6 sec
Answer: (D) 8 minutes 16.6 sec
Answer: (D) 8 minutes 16.6 sec
8 minutes 16.6 sec.
8 minutes 16.6 sec.
8 minutes 16.6 sec.
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Q7. Which are the main gases present in Sun?
Q7. Which are the main gases present in Sun?
Answer: (A) Hydrogen and Helium
Answer: (A) Hydrogen and Helium
Answer: (A) Hydrogen and Helium
hydrogen (about 70%) and helium (about 28%).
hydrogen (about 70%) and helium (about 28%).
hydrogen (about 70%) and helium (about 28%).
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Q8. Who was the first woman to win the Nobel Prize in Physics?
Q8. Who was the first woman to win the Nobel Prize in Physics?
Answer: (A) Marie Curie
Answer: (A) Marie Curie
Answer: (A) Marie Curie
Marie Salomea Skłodowska–Curie
She was the first woman to win a Nobel Prize, the first person to win a Nobel Prize twice, and the only person to win a Nobel Prize in two scientific fields. Marie won her 1st Nobel Prize in 1903 in Physics with her husband for their pioneering work developing the theory of "radioactivity" - a term she coined. Marie won her 2nd Nobel Prize in 1911 in Chemistry for her discovery of the elements polonium and radium, using techniques she invented for isolating radioactive isotopes.
Marie Salomea Skłodowska–Curie
She was the first woman to win a Nobel Prize, the first person to win a Nobel Prize twice, and the only person to win a Nobel Prize in two scientific fields. Marie won her 1st Nobel Prize in 1903 in Physics with her husband for their pioneering work developing the theory of "radioactivity" - a term she coined. Marie won her 2nd Nobel Prize in 1911 in Chemistry for her discovery of the elements polonium and radium, using techniques she invented for isolating radioactive isotopes.
She was the first woman to win a Nobel Prize, the first person to win a Nobel Prize twice, and the only person to win a Nobel Prize in two scientific fields. Marie won her 1st Nobel Prize in 1903 in Physics with her husband for their pioneering work developing the theory of "radioactivity" - a term she coined. Marie won her 2nd Nobel Prize in 1911 in Chemistry for her discovery of the elements polonium and radium, using techniques she invented for isolating radioactive isotopes.
Marie Salomea Skłodowska–Curie
She was the first woman to win a Nobel Prize, the first person to win a Nobel Prize twice, and the only person to win a Nobel Prize in two scientific fields. Marie won her 1st Nobel Prize in 1903 in Physics with her husband for their pioneering work developing the theory of "radioactivity" - a term she coined. Marie won her 2nd Nobel Prize in 1911 in Chemistry for her discovery of the elements polonium and radium, using techniques she invented for isolating radioactive isotopes.
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Q9. Beyond what distance a normal eye can see objects clearly?
Q9. Beyond what distance a normal eye can see objects clearly?
Answer: (C) 25 cm
Answer: (C) 25 cm
Answer: (C) 25 cm
For a clear vision, the image must be on the retina. The image distance is therefore fixed for clear vision and it equals the distance of retina from eye lens. It is about 25 cm for a grown up person. A person can theoretically have clear vision of an object situated at any large distance from the eye.
For a clear vision, the image must be on the retina. The image distance is therefore fixed for clear vision and it equals the distance of retina from eye lens. It is about 25 cm for a grown up person. A person can theoretically have clear vision of an object situated at any large distance from the eye.
For a clear vision, the image must be on the retina. The image distance is therefore fixed for clear vision and it equals the distance of retina from eye lens. It is about 25 cm for a grown up person. A person can theoretically have clear vision of an object situated at any large distance from the eye.
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Q10. The SI unit of electric potential difference is
Q10. The SI unit of electric potential difference is
Answer: (B) Voltage
Answer: (B) Voltage
Answer: (B) Voltage
The SI unit of electric Potential difference is VOLTAGE.
The SI unit of electric Potential difference is VOLTAGE.
The SI unit of electric Potential difference is VOLTAGE.
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Q11. Who discovered the Rings of Saturn?
Q11. Who discovered the Rings of Saturn?
Answer: (C) Galileo Galilei
Answer: (C) Galileo Galilei
Answer: (C) Galileo Galilei
Galileo Galilei becomes the first to observe Saturn's rings with his 20-power telescope in 1610. He thought the rings were "handles" or large moons on either side of the planet.
Galileo Galilei becomes the first to observe Saturn's rings with his 20-power telescope in 1610. He thought the rings were "handles" or large moons on either side of the planet.
Galileo Galilei becomes the first to observe Saturn's rings with his 20-power telescope in 1610. He thought the rings were "handles" or large moons on either side of the planet.
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Q12. What type of lens is used in a magnifying glass?
Q12. What type of lens is used in a magnifying glass?
Answer: (B) Convex
Answer: (B) Convex
Answer: (B) Convex
Convex
Convex
Convex
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Q13. What vitamin is contained in the Sun light ?
Q13. What vitamin is contained in the Sun light ?
Answer: (D) Vitamin D
Answer: (D) Vitamin D
Answer: (D) Vitamin D
Vitamin D
The body creates vitamin D from direct sunlight on the skin when outdoors. But between October and early March we do not make enough vitamin D from sunlight.
Vitamin D
The body creates vitamin D from direct sunlight on the skin when outdoors. But between October and early March we do not make enough vitamin D from sunlight.
The body creates vitamin D from direct sunlight on the skin when outdoors. But between October and early March we do not make enough vitamin D from sunlight.
Vitamin D
The body creates vitamin D from direct sunlight on the skin when outdoors. But between October and early March we do not make enough vitamin D from sunlight.
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Q14. Study of universe is called
Q14. Study of universe is called
Answer: (A) Cosmology
Answer: (A) Cosmology
Answer: (A) Cosmology
Cosmology
Cosmology
Cosmology
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Q15. The surface temperature of the Sun is
Q15. The surface temperature of the Sun is
Answer: (B) 6000 degree C
Answer: (B) 6000 degree C
Answer: (B) 6000 degree C
6000 degree C
6000 degree C
6000 degree C
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Q16. The period of one revolution of the Sun around the center of galaxy is called?
Q16. The period of one revolution of the Sun around the center of galaxy is called?
Answer: (D) Cosmic Year
Answer: (D) Cosmic Year
Answer: (D) Cosmic Year
The galactic year, also known as a cosmic year, is the duration of time required for the Sun to orbit once around the center of the Milky Way Galaxy. One galactic year is approximately 230 million Earth years.
The galactic year, also known as a cosmic year, is the duration of time required for the Sun to orbit once around the center of the Milky Way Galaxy. One galactic year is approximately 230 million Earth years.
The galactic year, also known as a cosmic year, is the duration of time required for the Sun to orbit once around the center of the Milky Way Galaxy. One galactic year is approximately 230 million Earth years.
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Q17. Which is responsible for Earth's magnetic field?
Q17. Which is responsible for Earth's magnetic field?
Answer: (B) Outer Core
Answer: (B) Outer Core
Answer: (B) Outer Core
Outer Core
The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in Earth's outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo.
Outer Core The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in Earth's outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo.
Outer Core The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in Earth's outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo.
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Q18. How many times the Jupiter is bigger than the Earth by diameter?
Q18. How many times the Jupiter is bigger than the Earth by diameter?
Answer: (D) 11
Answer: (D) 11
Answer: (D) 11
11
With a radius of 43,440.7 miles (69,911 kilometers), Jupiter is 11 times wider than Earth.
11
With a radius of 43,440.7 miles (69,911 kilometers), Jupiter is 11 times wider than Earth.
With a radius of 43,440.7 miles (69,911 kilometers), Jupiter is 11 times wider than Earth.
11
With a radius of 43,440.7 miles (69,911 kilometers), Jupiter is 11 times wider than Earth.
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Q19. Which comet does appear after 76 years
Q19. Which comet does appear after 76 years
Answer: (A) Halley's comet
Answer: (A) Halley's comet
Answer: (A) Halley's comet
Halley's Comet
Halley's Comet
Halley's Comet
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Q20. Which among the following Vitamin is also known as Tocoferol?
Q20. Which among the following Vitamin is also known as Tocoferol?
Answer: (A) Vitamin E
Answer: (A) Vitamin E
Answer: (A) Vitamin E
Vitamin E
Vitamin E
Vitamin E
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