MCQ – GK Questions

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Showing 1681–1700 of 3526 questions
science hard MCQ Physics - Neutrino Astronomy UPSC CSE, SSC Scientific Assistant, CSIR NET

High-energy astrophysical neutrinos detected by IceCube originate from:

  1. Blazars
  2. Supernova remnants
  3. Gamma-ray bursts
  4. All of these
science hard MCQ Biology - Digital Pathology UPSC CSE, SSC Scientific Assistant, CSIR NET

AI algorithms in digital pathology assist in:

  1. Tumor detection and grading
  2. Cell counting and classification
  3. Predicting treatment response
  4. All of these
science medium MCQ Technology - AI in Agriculture UPSC Prelims, SSC CGL, Railway NTPC

AI-powered crop advisory systems use satellite imagery and weather data to provide:

  1. Sowing recommendations
  2. Pest/disease alerts
  3. Irrigation scheduling
  4. All of these
science hard MCQ Chemistry - Green Ammonia Synthesis UPSC CSE, SSC Scientific Assistant, CSIR NET

Electrochemical ammonia synthesis aims to replace the Haber-Bosch process by using:

  1. Renewable electricity
  2. Ambient temperature/pressure
  3. Water as hydrogen source
  4. All of these
science medium MCQ Environmental Science - Climate-Resilient Agriculture UPSC Prelims, SSC CGL, Railway NTPC

Climate-resilient crop varieties are developed to tolerate:

  1. Drought
  2. Salinity
  3. Heat stress
  4. All of these
science hard MCQ Physics - Dark Matter Detection UPSC CSE, SSC Scientific Assistant, CSIR NET

Direct detection experiments for dark matter search for:

  1. Nuclear recoils from WIMP interactions
  2. Axion-photon conversion
  3. Sterile neutrino decay
  4. All of these
science hard MCQ Biology - Organ-on-a-Chip UPSC CSE, SSC Scientific Assistant, CSIR NET

Organ-on-a-chip devices replicate human physiology using:

  1. Microfluidic channels
  2. Living human cells
  3. Mechanical stimuli
  4. All of these
science medium MCQ Technology - Edge AI UPSC CSE, Banking Specialist Officer, SSC CHSL

Edge AI deploys machine learning models directly on devices to:

  1. Reduce latency
  2. Conserve bandwidth
  3. Enhance privacy
  4. All of these
science hard MCQ Chemistry - Perovskite Photovoltaics UPSC CSE, SSC Scientific Assistant, CSIR NET

Perovskite solar cells suffer from instability primarily due to:

  1. Moisture sensitivity
  2. Thermal degradation
  3. Ion migration
  4. All of these
science medium MCQ Environmental Science - Climate Migration UPSC Prelims, SSC CGL, Railway NTPC

Climate-induced migration in India is primarily driven by:

  1. Sea-level rise in coastal areas
  2. Droughts and water scarcity
  3. Extreme weather events
  4. All of these
science hard MCQ Physics - Gravitational Lensing UPSC CSE, SSC Scientific Assistant, CSIR NET

Strong gravitational lensing by massive galaxy clusters can produce:

  1. Einstein rings
  2. Multiple images of background sources
  3. Magnification of faint objects
  4. All of these
science hard MCQ Biology - Microbiome-Brain Axis UPSC CSE, SSC Scientific Assistant, CSIR NET

The gut-brain axis involves communication via:

  1. Vagus nerve signaling
  2. Microbial metabolites (SCFAs)
  3. Immune system modulation
  4. All of these
science medium MCQ Technology - AI for Climate UPSC CSE, SSC Scientific Assistant, Railway NTPC

AI models are used in climate science primarily for:

  1. Improving weather forecast accuracy
  2. Downscaling global climate models
  3. Detecting extreme events in satellite data
  4. All of these
science hard MCQ Chemistry - CO₂ Utilization UPSC CSE, SSC Scientific Assistant, CSIR NET

Electrochemical reduction of CO₂ can produce valuable chemicals like:

  1. Formic acid
  2. Carbon monoxide
  3. Ethylene
  4. All of these
science hard MCQ Environmental Science - Climate Tipping Points UPSC Prelims, SSC CGL, Railway NTPC

Which of the following is considered a potential climate tipping element?

  1. Amazon rainforest dieback
  2. West Antarctic Ice Sheet collapse
  3. Atlantic Meridional Overturning Circulation slowdown
  4. All of these
science hard MCQ Physics - Topological Materials UPSC CSE, SSC Scientific Assistant, CSIR NET

Weyl semimetals host quasiparticles that behave like massless ________ fermions.

  1. Dirac
  2. Majorana
  3. Weyl
  4. Pauli
science hard MCQ Biology - Epigenetic Clocks UPSC CSE, SSC Scientific Assistant, CSIR NET

DNA methylation patterns at specific CpG sites can be used to estimate:

  1. Genetic ancestry
  2. Biological age
  3. Disease risk
  4. All of these
science hard MCQ Technology - Explainable AI UPSC CSE, Banking Specialist Officer, SSC CHSL

Explainable AI (XAI) techniques aim to make machine learning models:

  1. Faster
  2. More accurate
  3. Interpretable and transparent
  4. Smaller in size
science hard MCQ Chemistry - Sustainable Catalysis UPSC CSE, SSC Scientific Assistant, CSIR NET

Enzyme immobilization on solid supports enhances catalyst reusability and stability for:

  1. Homogeneous catalysis
  2. Heterogeneous biocatalysis
  3. Photocatalysis
  4. Electrocatalysis
science hard MCQ Environmental Science - Climate Attribution UPSC Prelims, SSC CGL, Railway NTPC

Extreme event attribution studies use climate models to determine:

  1. Future climate projections
  2. Human influence on specific extreme events
  3. Carbon budget calculations
  4. Sea-level rise rates