Jagran Josh Science Quiz
- 1.
Astronautics is the branch of science deals in?
- A.
The study is sea
- B.
The Study of motion
- C.
The science of space travel
Correct Answer
C. The science of space travelExplanation
Astronautics is the branch of science that focuses on the study and development of space travel. It involves the scientific and technological aspects of space exploration, including spacecraft design, propulsion systems, and navigation. Astronautics encompasses various disciplines such as physics, engineering, and astronomy, all aimed at understanding and advancing our capabilities to travel and explore outer space.Rate this question:
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- 2.
What was the active medium used in the first working laser ever constructed?
- A.
A diamond block
- B.
Helium-neon gas
- C.
A ruby rod
- D.
Carbon dioxide gas
Correct Answer
C. A ruby rodExplanation
The first working laser ever constructed used a ruby rod as its active medium. The ruby rod is a cylindrical piece of synthetic ruby that is doped with chromium ions. When energy is applied to the ruby rod, the chromium ions become excited and emit light. This light then bounces back and forth within the rod, reflecting off the ends, and amplifying to create a coherent beam of laser light. The use of a ruby rod as the active medium allowed for the production of a focused and intense laser beam.Rate this question:
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- 3.
What does AC and DC stand for in the electrical field?
- A.
Alternating Current and Direct Current
- B.
A Rock Band from Australia
- C.
Average Current and Discharged Capacitor
- D.
Atlantic City and District of Columbia
Correct Answer
A. Alternating Current and Direct CurrentExplanation
AC and DC stand for Alternating Current and Direct Current in the electrical field. Alternating Current refers to the flow of electric charge that periodically reverses direction, commonly used in household electricity. Direct Current, on the other hand, refers to the flow of electric charge in only one direction, commonly used in batteries and electronic devices.Rate this question:
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- 4.
An exceedingly hot wind from the Sahara Desert that blows into Egypt (usually) in the spring.
- A.
Kieselguhr
- B.
Ketone
- C.
Khamsin
- D.
Kettle
Correct Answer
C. KhamsinExplanation
The correct answer is "khamsin." Khamsin is an exceedingly hot wind that blows into Egypt, typically in the spring, from the Sahara Desert. It is a dry and dusty wind that can cause sandstorms and high temperatures.Rate this question:
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- 5.
Araneology is the branch of science deals in?
- A.
The study of spiders
- B.
The study of lizards
- C.
The study of tigers
Correct Answer
A. The study of spidersExplanation
Araneology is the branch of science that deals with the study of spiders. This field focuses on various aspects of spiders, including their taxonomy, anatomy, behavior, ecology, and evolution. Araneologists study different species of spiders, their habitats, feeding habits, reproduction, and their role in ecosystems. They also investigate the venom and silk production of spiders, as well as their interactions with other organisms. By understanding spiders, araneologists contribute to our knowledge of biodiversity, ecological relationships, and the development of potential applications in medicine and technology.Rate this question:
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- 6.
Ceramics is the branch of science deals in?
- A.
The art and technology of making objects from clay
- B.
The art of climbing
- C.
The art of moving fast
Correct Answer
A. The art and technology of making objects from clayExplanation
Ceramics is the branch of science that focuses on the art and technology of creating objects using clay. This field involves various techniques such as shaping, molding, firing, and glazing clay to produce functional or decorative items. It encompasses a wide range of applications, from pottery and sculpture to tiles and porcelain. The study of ceramics involves understanding the properties of clay, its behavior during firing, and the various techniques used to manipulate it.Rate this question:
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- 7.
Scientists recently found the treatment for Glaucoma in rats. Glaucoma is an __ disease.
- A.
Eye
- B.
Ear
- C.
Lung
- D.
Skin
Correct Answer
A. EyeExplanation
Glaucoma is an eye disease, as mentioned in the question. Scientists have discovered a treatment for Glaucoma in rats, which implies that the disease affects the eyes of these animals. Therefore, the correct answer is "Eye."Rate this question:
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- 8.
Indian black eagle was spotted in the Aravali Biodiversity park after a gap of __ years.
- A.
90
- B.
80
- C.
70
- D.
60
Correct Answer
A. 90Explanation
The Indian black eagle was recently seen in the Aravali Biodiversity Park after a period of 90 years. This suggests that the species has not been sighted in this particular area for almost a century. The sighting of the eagle after such a long gap indicates a positive change in the park's ecosystem and conservation efforts, allowing the bird to return to its natural habitat.Rate this question:
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- 9.
Deficiency of which Vitamin can cause Scurvy ?
- A.
Vitamin A
- B.
Vitamin B
- C.
Vitamin C
- D.
Vitamin D
Correct Answer
C. Vitamin CExplanation
Deficiency of Vitamin C can cause scurvy. Scurvy is a disease characterized by weakness, anemia, gum disease, and skin hemorrhages. Vitamin C is essential for the synthesis of collagen, a protein that helps in the formation of connective tissues, blood vessels, and wound healing. Without enough Vitamin C, the body is unable to produce collagen, leading to the breakdown of connective tissues and the symptoms of scurvy. Vitamin A, Vitamin B, and Vitamin D deficiencies do not cause scurvy.Rate this question:
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- 10.
Angelology is the branch of science deals in?
- A.
That deals with the Study of Blood Vascular System
- B.
That deals with the study of blood cells
- C.
That deals with solar ellipse
Correct Answer
A. That deals with the Study of Blood Vascular SystemExplanation
Angelology is not the branch of science that deals with the study of blood cells or solar ellipse. It is the branch of science that deals with the study of the blood vascular system.Rate this question:
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Current Version
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Mar 20, 2023Quiz Edited by
ProProfs Editorial Team -
May 14, 2012Quiz Created by
Tanmay Shankar
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