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UPSC Exam  >  UPSC Tests  >  Science & Technology for UPSC CSE  >  Test: Space Technology - 2 - UPSC MCQ

Test: Space Technology - 2 - UPSC MCQ


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10 Questions MCQ Test Science & Technology for UPSC CSE - Test: Space Technology - 2

Test: Space Technology - 2 for UPSC 2024 is part of Science & Technology for UPSC CSE preparation. The Test: Space Technology - 2 questions and answers have been prepared according to the UPSC exam syllabus.The Test: Space Technology - 2 MCQs are made for UPSC 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Space Technology - 2 below.
Solutions of Test: Space Technology - 2 questions in English are available as part of our Science & Technology for UPSC CSE for UPSC & Test: Space Technology - 2 solutions in Hindi for Science & Technology for UPSC CSE course. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free. Attempt Test: Space Technology - 2 | 10 questions in 10 minutes | Mock test for UPSC preparation | Free important questions MCQ to study Science & Technology for UPSC CSE for UPSC Exam | Download free PDF with solutions
Test: Space Technology - 2 - Question 1
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Which stage in the life cycle of a star is characterized by the fusion of hydrogen to form helium in its core?

Detailed Solution for Test: Space Technology - 2 - Question 1
Main Sequence Star is the stage in the life cycle of a star where hydrogen fusion occurs in the core. This fusion of hydrogen to form helium is what provides the star with its energy, allowing it to shine steadily.
Test: Space Technology - 2 - Question 2
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What is the primary component of a nebula?

Detailed Solution for Test: Space Technology - 2 - Question 2
Nebulae are primarily composed of hydrogen and helium gas, with some dust and other trace elements. These clouds of gas and dust are the birthplaces of stars.
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Test: Space Technology - 2 - Question 3
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What is the primary driving force behind the expansion of the universe?

Detailed Solution for Test: Space Technology - 2 - Question 3
Dark Energy is the primary driving force behind the expansion of the universe. It exerts a repulsive force, causing the universe's expansion to accelerate.
Test: Space Technology - 2 - Question 4
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What type of stars make up about 90 percent of the stars in the universe?
Detailed Solution for Test: Space Technology - 2 - Question 4
Red Dwarfs make up about 90 percent of the stars in the Milky Way and the universe. They are relatively faint and small compared to other types of stars.
Test: Space Technology - 2 - Question 5
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What is the final stage in the life cycle of a star like the Sun?
Detailed Solution for Test: Space Technology - 2 - Question 5
The final stage in the life cycle of a star like the Sun is a White Dwarf. It is a small, hot, and dense remnant of a star that has exhausted its nuclear fuel.
Test: Space Technology - 2 - Question 6
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What triggers a nova event on the surface of a white dwarf in a binary system?
Detailed Solution for Test: Space Technology - 2 - Question 6
A nova event on the surface of a white dwarf is triggered when it accumulates enough material from a companion star. This material buildup leads to a sudden increase in pressure and temperature, causing a bright outburst.
Test: Space Technology - 2 - Question 7
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Which type of matter interacts with gravity but does not emit, absorb, or reflect light?
Detailed Solution for Test: Space Technology - 2 - Question 7
Dark Matter is a type of matter that interacts with gravity but does not emit, absorb, or reflect light. It is "dark" because it is invisible to electromagnetic radiation, including light.
Test: Space Technology - 2 - Question 8
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What is the primary function of neutrinos in the study of the universe?
Detailed Solution for Test: Space Technology - 2 - Question 8
Neutrinos are used to probe the early Universe. They interact very weakly with matter, allowing them to travel long distances undisturbed. This makes them valuable for studying the universe's early stages.
Test: Space Technology - 2 - Question 9
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What is the hypothetical type of matter that, if it exists, would have negative mass and negative energy?
Detailed Solution for Test: Space Technology - 2 - Question 9
Negative Matter is a hypothetical type of matter that, if it exists, would have negative mass and negative energy. It is believed to repel normal matter under gravity.
Test: Space Technology - 2 - Question 10
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Which elementary particle has an antiparticle with the same mass but opposite electrical charge?
Detailed Solution for Test: Space Technology - 2 - Question 10
The electron has an antiparticle called the antielectron (positron) with the same mass but opposite electrical charge.
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