Preparing for exams like OSSSC RI, ARI, Amin, SFS, ICDS Supervisor necessitates a thorough understanding of science and technology concepts. To aid in your preparation, here’s a selection of the top 30 multiple-choice questions (MCQs) covering various aspects of science and technology. These questions delve into topics ranging from basic scientific principles to cutting-edge technological advancements. By engaging with these MCQs, candidates can enhance their grasp of crucial scientific concepts and stay abreast of the latest developments in technology. Whether it’s understanding the fundamentals of physics, biology, chemistry, or exploring the latest innovations in the field of technology, these MCQs serve as valuable tools to assess and augment one’s knowledge base.
Top 30 Science and Technology MCQS For OSSSC RI,ARI, Amin, SFS, ICDS Supervisor
- What is a Kerr black hole?
A) A black hole formed by the collision of two neutron stars
B) A black hole with no charge and no rotation
C) A rotating black hole formed from the remnants of a massive star
D) A black hole with a magnetic field
Answer: C) A rotating black hole formed from the remnants of a massive star - Where is the gravitational singularity located in a black hole?
A) At the event horizon
B) Inside the ergosphere
C) At the core of the black hole
D) Beyond the event horizon
Answer: C) At the core of the black hole - What is the event horizon in the context of a black hole?
A) The boundary where the gravitational pull is weakest
B) The surface where matter and energy can be extracted
C) The spherical boundary around the singularity from which nothing can escape
D) The region where light can escape the black hole’s gravity
Answer: C) The spherical boundary around the singularity from which nothing can escape - What characteristic distinguishes a rotating black hole’s ergosphere from the event horizon?
A) Objects can escape the ergosphere if moving rapidly but not the event horizon
B) The ergosphere is smaller than the event horizon
C) The ergosphere is located inside the event horizon
D) The ergosphere only exists in non-rotating black holes
Answer: A) Objects can escape the ergosphere if moving rapidly but not the event horizon - What does the term ‘ergosphere’ mean in the context of a black hole?
A) Sphere of energy depletion
B) Sphere of light entrapment
C) Sphere where energy can be extracted
D) Sphere where time stands still
Answer: C) Sphere where energy can be extracted - Which component of a black hole is associated with the impossibility of escaping its gravitational pull?
A) Ergosphere
B) Singularity
C) Photon sphere
D) Event horizon
Answer: D) Event horizon - How does the ergosphere enable the extraction of energy from a black hole?
A) By allowing light to escape
B) By converting rotational energy to extractable matter
C) By reducing the black hole’s mass
D) By reversing the black hole’s spin
Answer: B) By converting rotational energy to extractable matter - What happens to matter that falls within the event horizon of a black hole?
A) It gets ejected back into space
B) It orbits around the black hole indefinitely
C) It becomes part of the black hole’s mass and cannot escape
D) It remains suspended at the event horizon
Answer: C) It becomes part of the black hole’s mass and cannot escape - Why is the ergosphere named after the Greek word ‘ergon’?
A) Because it represents a region where work can be done
B) Because it is the most energetic part of a black hole
C) Because it traps energy
D) Because it prevents any form of work from happening
Answer: A) Because it represents a region where work can be done - What theoretical process is primarily associated with energy extraction from the ergosphere?
A) Gravitational lensing
B) Hawking radiation
C) Penrose process
D) Accretion disk dynamics
Answer: C) Penrose process - What is the origin of rotating black holes?
A. Supernova explosion
B. Neutron star formation
C. White dwarf collapse
D. Planetary nebula formation
Answer: A. Supernova explosion - What is the core of a black hole called?
A. Event horizon
B. Ergosphere
C. Gravitational singularity
D. Dark matter
Answer: C. Gravitational singularity - What is the spherical boundary around a black hole’s singularity called?
A. Event horizon
B. Ergosphere
C. Photon sphere
D. Gravitational pull
Answer: A. Event horizon - What does the ergosphere of a black hole allow?
A. Objects to escape freely
B. Objects to enter and exit if moving rapidly
C. No movement of objects
D. Only light to enter
Answer: B. Objects to enter and exit if moving rapidly - What does ‘ergosphere’ mean in Greek?
A. Darkness
B. Energy
C. Work
D. Rotation
Answer: C. Work - What is the primary characteristic of the ergosphere compared to the event horizon?
A. Smaller in size
B. Allows light to escape
C. Objects can exit but not enter
D. Allows objects to enter and exit if moving rapidly
Answer: D. Allows objects to enter and exit if moving rapidly - Where can matter and energy be extracted from in a black hole?
A. Event horizon
B. Ergosphere
C. Singularity
D. Photon sphere
Answer: B. Ergosphere - What breaks down at the singularity of a black hole?
A. Electromagnetic forces
B. Quantum mechanics
C. General relativity
D. Gravitational forces
Answer: C. General relativity - What prevents anything from escaping a black hole once inside?
A. Ergosphere
B. Gravitational singularity
C. Event horizon
D. Photon sphere
Answer: C. Event horizon - Which type of black hole possesses an ergosphere?
A. Static black hole
B. Rotating black hole
C. Charged black hole
D. Stellar black hole
Answer: B. Rotating black hole - What recent enhancement has been made to Russia’s P-800 Onyx missile?
A) Improved target seeker
B) Increased range
C) Stealth technology integration
D) Enhanced propulsion system
Answer: A) Improved target seeker - What is the significance of Stage-2, named Kalam-250, in India’s space industry?
A) Atmospheric entry phase
B) Final orbit adjustments
C) Propelling to deep vacuum of outer space
D) Payload deployment
Answer: C) Propelling to deep vacuum of outer space - How does NASA determine the threat level posed by asteroids?
A) Size and speed
B) Proximity to Earth
C) Composition and shape
D) Potential impact force
Answer: B) Proximity to Earth - What technology does Hume AI utilize to enhance user interaction?
A) Facial recognition
B) Voice tonality analysis
C) Gesture recognition
D) Eye-tracking
Answer: B) Voice tonality analysis - What directive has been issued by the Department of Telecom (DoT) regarding USSD services?
A) Enhancement of USSD-based services
B) Suspension of USSD-based call forwarding services
C) Introduction of new USSD codes
D) Expansion of USSD coverage
Answer: B) Suspension of USSD-based call forwarding services - What modification has been proposed to the Saffir-Simpson wind scale?
A) Addition of new categories
B) Removal of category 5
C) Adjustment of wind speed ranges
D) Integration of storm surge assessment
Answer: A) Addition of new categories - Which organization recently celebrated its 10th anniversary as the implementation arm of the UNFCCC’s Climate Change Technology Mechanism?
A) NASA
B) Skyroot Aerospace
C) Climate Technology Centre and Network (CTCN)
D) Securities and Exchange Board of India (Sebi)
Answer: C) Climate Technology Centre and Network (CTCN) - What is the aim of India’s Longevity India Initiative?
A) Space exploration
B) Disease eradication
C) Extending human health span
D) Renewable energy development
Answer: C) Extending human health span - What distinguishes Phi-3-Mini from large language models (LLMs)?
A) Larger parameter count
B) Higher computational requirements
C) Cost-effectiveness and efficiency
D) Greater context window size
Answer: C) Cost-effectiveness and efficiency - What recent geopolitical development involves the delivery of BrahMos supersonic cruise missiles?
A) India-China border dispute resolution
B) Russia-Ukraine conflict resolution
C) Philippines-China territorial dispute
D) US-Iran nuclear deal
Answer: C) Philippines-China territorial dispute
