Science – GK Questions

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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
science medium true/false environmental science - blue economy upsc prelims, ssc cgl, railway ntpc

True or False: India's Deep Ocean Mission aims to explore polymetallic nodules and develop oceanic thermal energy conversion (OTEC).

  1. True
  2. False
science hard mcq biology - car-t cell therapy upsc cse, ssc scientific assistant, csir net

CAR-T therapy engineers a patient's T cells to express chimeric antigen receptors targeting:

  1. Bacterial antigens
  2. Viral proteins
  3. Tumor-specific antigens
  4. Autoantigens
science hard fill in the blank biology - mrna therapeutics upsc cse, ssc scientific assistant, csir net

Lipid nanoparticles (LNPs) in mRNA vaccines protect the mRNA and facilitate its entry into cells via ________.

  1. Diffusion
  2. Endocytosis
  3. Osmosis
  4. Active transport
science medium true/false chemistry - battery recycling ssc cgl, railway ntpc, upsc capf

True or False: Hydrometallurgical processes use aqueous solutions to recover valuable metals from spent lithium-ion batteries.

  1. True
  2. False
science medium mcq chemistry - green hydrogen production upsc prelims, ssc cgl, railway ntpc

Green hydrogen is produced by electrolysis of water using electricity from:

  1. Coal power plants
  2. Natural gas reforming
  3. Renewable energy sources
  4. Nuclear power
science hard fill in the blank physics - quantum sensing upsc cse, ssc scientific assistant, railway je

Atomic clocks used in GPS satellites rely on the hyperfine transition of ________ atoms for precise timekeeping.

  1. Hydrogen
  2. Cesium
  3. Rubidium
  4. Strontium