Science – GK Questions

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Showing 61–80 of 399 questions
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 Fill in the Blank Biology - Single-Cell Sequencing UPSC CSE, SSC Scientific Assistant, CSIR NET

Single-cell RNA sequencing (scRNA-seq) reveals ________ heterogeneity within tissues that bulk sequencing masks.

  1. Genetic
  2. Transcriptional
  3. Epigenetic
  4. Proteomic
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 Fill in the Blank Technology - Federated Learning UPSC CSE, Banking Specialist Officer, SSC CHSL

Federated learning trains AI models across decentralized devices while keeping data ________.

  1. Centralized
  2. Encrypted
  3. Local
  4. Anonymized
science medium True/False Environmental Science - Just Energy Transition UPSC Prelims, SSC CGL, Railway NTPC

True or False: A just energy transition ensures that workers and communities dependent on fossil fuels are supported during the shift to clean energy.

  1. True
  2. False
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 Fill in the Blank Chemistry - Flow Battery Technology Railway JE, SSC JE, Banking Specialist Officer

Vanadium redox flow batteries store energy in liquid electrolytes containing ________ ions that undergo reversible redox reactions.

  1. Lithium
  2. Sodium
  3. Vanadium
  4. Zinc
science hard True/False Physics - Spintronics UPSC CSE, SSC Scientific Assistant, CSIR NET

True or False: Spintronics exploits the electron's spin degree of freedom, in addition to its charge, for information processing.

  1. True
  2. False
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 medium Fill in the Blank Environmental Science - Nature-Based Solutions UPSC Prelims, SSC CGL, Railway NTPC

Restoring wetlands for flood control and carbon sequestration is an example of a ________ solution to climate change.

  1. Technological
  2. Nature-based
  3. Policy-based
  4. Financial
science hard True/False Biology - Synthetic Genomics UPSC CSE, SSC Scientific Assistant, CSIR NET

True or False: The first synthetic bacterial cell (JCVI-syn1.0) was created by assembling a chemically synthesized genome and transplanting it into a recipient cell.

  1. True
  2. False
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 Fill in the Blank Physics - Advanced Materials UPSC CSE, SSC Scientific Assistant, CSIR NET

Metamaterials derive unusual properties (e.g., negative refraction) from their ________ rather than chemical composition.

  1. Atomic structure
  2. Crystal lattice
  3. Engineered microstructure
  4. Molecular bonds
science medium True/False Technology - Digital Health Records SSC CHSL, Banking PO, Railway Group C

True or False: The Ayushman Bharat Digital Mission (ABDM) uses Health ID as a unique identifier for individuals across healthcare providers.

  1. True
  2. False
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
science hard Fill in the Blank Biology - Gene Drives UPSC CSE, SSC Scientific Assistant, CSIR NET

Gene drives use CRISPR to bias inheritance, increasing the frequency of a trait in a population. They are being researched for controlling ________ vectors.

  1. Bacterial
  2. Viral
  3. Mosquito
  4. Fungal
science medium True/False Chemistry - Photocatalysis SSC CGL, Railway NTPC, UPSC CAPF

True or False: Titanium dioxide (TiO₂) is a widely studied photocatalyst for water splitting and pollutant degradation under UV light.

  1. True
  2. False
science hard MCQ Physics - Fusion Energy UPSC CSE, SSC Scientific Assistant, CSIR NET

The ITER project, in which India is a partner, aims to demonstrate net energy gain from nuclear fusion using which fuel cycle?

  1. Deuterium-Deuterium
  2. Deuterium-Tritium
  3. Proton-Boron
  4. Helium-3-Deuterium
science hard Fill in the Blank Technology - 6G Vision UPSC CSE, Banking Specialist Officer, SSC CHSL

6G networks are envisioned to integrate communication with ________ for immersive experiences.

  1. Sensing
  2. Computing
  3. AI
  4. All of these