Science (Science) | MCQ Quizzes | Category (R/R/M)
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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: 2215
Last Refreshed: 2026-05-06 03:14:32
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 of the Solar System is the brightest planet?
Q1. 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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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. Beyond what distance a normal eye can see objects clearly?
Q3. 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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Q4. Which among the following elements is a liquid at room temperature?
Q4. Which among the following elements is a liquid at room temperature?
Answer: (A) Mercury
Answer: (A) Mercury
Answer: (A) Mercury
Mercury
Mercury
Mercury
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Q5. Who invented the modern Ballpoint Pen?
Q5. Who invented the modern Ballpoint Pen?
Answer: (A) Biro Brothers
Answer: (A) Biro Brothers
Answer: (A) Biro Brothers
Biro Brothers
Biro Brothers
Biro Brothers
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Q6. Who discovered the Rings of Saturn?
Q6. 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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Q7. Which of the following Indian Economist won Nobel Prize in Economic Science?
Q7. Which of the following Indian Economist won Nobel Prize in Economic Science?
Answer: (D) Amartya Sen
Answer: (D) Amartya Sen
Answer: (D) Amartya Sen
Amartya Sen is the only Indian economist to win the Nobel Memorial Prize in Economic Sciences, which he received in 1998. Sen is known for his work on welfare economics, social choice theory, and development economics. He is also known for his interest in the problems of society's poorest members and his work on the causes of famine.
Amartya Sen is the only Indian economist to win the Nobel Memorial Prize in Economic Sciences, which he received in 1998. Sen is known for his work on welfare economics, social choice theory, and development economics. He is also known for his interest in the problems of society's poorest members and his work on the causes of famine.
Amartya Sen is the only Indian economist to win the Nobel Memorial Prize in Economic Sciences, which he received in 1998. Sen is known for his work on welfare economics, social choice theory, and development economics. He is also known for his interest in the problems of society's poorest members and his work on the causes of famine.
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Q8. Which of the following do not belong to Solar System?
Q8. Which of the following do not belong to Solar System?
Planet, Nebulae, Astroid and Comet
Planet, Nebulae, Astroid and Comet
Planet, Nebulae, Astroid and Comet
Answer: (B) Nebulae
Answer: (B) Nebulae
Answer: (B) Nebulae
Nebulae
Nebulae
Nebulae
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Q9. Which planet is also referred to a "Dwarf Planet"?
Q9. Which planet is also referred to a "Dwarf Planet"?
Answer: (D) Pluto
Answer: (D) Pluto
Answer: (D) Pluto
Pluto
Pluto
Pluto
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Q10. The surface temperature of the Sun is
Q10. 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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Q11. The science dealing with X-rays and other high-energy radiation, especially for the diagnosis and treatment of disease.
Q11. The science dealing with X-rays and other high-energy radiation, especially for the diagnosis and treatment of disease.
What is one word substitution of the phrase?
What is one word substitution of the phrase?
What is one word substitution of the phrase?
Answer: (D) radiology
Answer: (D) radiology
Answer: (D) radiology
Substitute Word: radiology.
Radiology encompasses the medical use of imaging techniques such as X-rays, CT scans, MRI scans, Ultrasound, etc.
Substitute Word: radiology. Radiology encompasses the medical use of imaging techniques such as X-rays, CT scans, MRI scans, Ultrasound, etc.
Substitute Word: radiology. Radiology encompasses the medical use of imaging techniques such as X-rays, CT scans, MRI scans, Ultrasound, etc.
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Q12. Which Disease is caused due to deficiency of Iron?
Q12. Which Disease is caused due to deficiency of Iron?
Answer: (D) Anaemia
Answer: (D) Anaemia
Answer: (D) Anaemia
Anemia
Anemia
Anemia
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Q13. The SI unit of electric potential difference is
Q13. 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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Q14. The weight of an object on the moon is equal to ___ of its weight on the earth.
Q14. 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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Q15. The Science which studies the crust of the earth.
Q15. The Science which studies the crust of the earth.
What is one word substitution of the phrase?
What is one word substitution of the phrase?
What is one word substitution of the phrase?
Answer: (D) geology
Answer: (D) geology
Answer: (D) geology
Substitute Word: geology.
Geology is a broad term that encompasses the study of Earth's solid, liquid, and gaseous parts, as well as the processes that shape them. It includes the study of rocks, minerals, fossils, and the history of the planet.
Substitute Word: geology. Geology is a broad term that encompasses the study of Earth's solid, liquid, and gaseous parts, as well as the processes that shape them. It includes the study of rocks, minerals, fossils, and the history of the planet.
Substitute Word: geology. Geology is a broad term that encompasses the study of Earth's solid, liquid, and gaseous parts, as well as the processes that shape them. It includes the study of rocks, minerals, fossils, and the history of the planet.
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Q16. Sound waves can't travel through
Q16. Sound waves can't travel through
Answer: (D) Vaccum
Answer: (D) Vaccum
Answer: (D) Vaccum
Sound waves cannot travel in a vacuum. It can travel only through a material medium. e.g., solids, liquids and gases.
Sound waves cannot travel in a vacuum. It can travel only through a material medium. e.g., solids, liquids and gases.
Sound waves cannot travel in a vacuum. It can travel only through a material medium. e.g., solids, liquids and gases.
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Q17. The speed of light is maximum in
Q17. The speed of light is maximum in
Answer: (D) Vaccum
Answer: (D) Vaccum
Answer: (D) Vaccum
The speed of light is maximum in a vacuum. Vacuum is the least dense medium with no obstruction to the path of light. Its refractive index is equal to unity, hence, the speed of light is maximum in a vacuum.
The speed of light is maximum in a vacuum. Vacuum is the least dense medium with no obstruction to the path of light. Its refractive index is equal to unity, hence, the speed of light is maximum in a vacuum.
The speed of light is maximum in a vacuum. Vacuum is the least dense medium with no obstruction to the path of light. Its refractive index is equal to unity, hence, the speed of light is maximum in a vacuum.
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Q18. How much time does sunlight take to reach the Earth from the Sun?
Q18. 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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Q19. Exposure to sunlight helps a person improve his health because of
Q19. Exposure to sunlight helps a person improve his health because of
Answer: (D) The ultraviolet rays convert skin oil into Vitamin D
Answer: (D) The ultraviolet rays convert skin oil into Vitamin D
Answer: (D) The ultraviolet rays convert skin oil into Vitamin D
The ultraviolet rays convert skin oil into Vitamin D
The ultraviolet rays convert skin oil into Vitamin D
The ultraviolet rays convert skin oil into Vitamin D
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Q20. What is the Distance between the Earth and the Moon?
Q20. What is the Distance between the Earth and the Moon?
Answer: (C) 384,400 KM
Answer: (C) 384,400 KM
Answer: (C) 384,400 KM
384,400 KM.
The average distance between Earth and the Moon is 384,400 kilometers (238,855 miles). This is about 30 times the diameter of Earth. The Moon’s orbit around Earth is elliptical, so the distance between the two bodies varies slightly.
The semi-major axis has a value of 384,399 km (238,854 mi). The time-averaged distance between the centers of Earth and the Moon is 385,000.6 km (239,228.3 mi). The actual distance varies over the course of the orbit of the Moon, from 356,500 km (221,500 mi) at the perigee to 406,700 km (252,700 mi) at apogee, resulting in a differential range of 50,200 km (31,200 mi).
384,400 KM. The average distance between Earth and the Moon is 384,400 kilometers (238,855 miles). This is about 30 times the diameter of Earth. The Moon’s orbit around Earth is elliptical, so the distance between the two bodies varies slightly. The semi-major axis has a value of 384,399 km (238,854 mi). The time-averaged distance between the centers of Earth and the Moon is 385,000.6 km (239,228.3 mi). The actual distance varies over the course of the orbit of the Moon, from 356,500 km (221,500 mi) at the perigee to 406,700 km (252,700 mi) at apogee, resulting in a differential range of 50,200 km (31,200 mi).
384,400 KM. The average distance between Earth and the Moon is 384,400 kilometers (238,855 miles). This is about 30 times the diameter of Earth. The Moon’s orbit around Earth is elliptical, so the distance between the two bodies varies slightly. The semi-major axis has a value of 384,399 km (238,854 mi). The time-averaged distance between the centers of Earth and the Moon is 385,000.6 km (239,228.3 mi). The actual distance varies over the course of the orbit of the Moon, from 356,500 km (221,500 mi) at the perigee to 406,700 km (252,700 mi) at apogee, resulting in a differential range of 50,200 km (31,200 mi).
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